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4L60E: AFL Valve (Part 1) How it Works

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Learn how the 4L60E AFL Valve works. When there are problems with the Actuator Feed Limit (AFL) circuit, it leads to number of 4L60E problems; smoked clutches, wrong gear starts, neutrals on Hwy, etc.
Before we can address the problem areas, it's important to first understand the basics of how a healthy system works. Buckle up!
Help this Channel Grow: • Help This RU-vid Chan...
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DISCLOSURE: 🕵
Links provided are affiliated links with the associated websites. While there is no extra cost to the purchaser, a small portion of the sale goes to support this RU-vid channel.

Опубликовано:

6 сен 2024

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Комментарии : 190

@SouthpawAutoworks 2 года назад

Thank you for being here! If it feels right to you, help me spread the word about this channel… 1 Handed Transmission Rebuilder (60 sec): ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ZQHtrVFUHdk.html

@1970chevelle71 2 года назад

The animation used to illustrate the fluid path and the valve movement is absolutely the best I have ever seen! From a semi retired GM tech who has nearly every GM book on the 4l60 and the 4l60E in my library.

@SouthpawAutoworks 2 года назад

Right on! The feedback is appreciated. Thanks for dropping me a line!

@markgriffin847 2 года назад

You are the best transmission guy on RU-vid. Thanks

@SouthpawAutoworks 2 года назад

What a compliment! Positive feedback is always appreciated. Thanks for dropping me a line!

@philipwilliams6648 2 года назад

I am a retired autobody tech with extensive experience in mechanical repair tho very limited to the modern transmission, you nailed it with the info put forth. I wish alone of the ICar classes and instructors would present the information in a manner such as you. Your way of instruction should be used by the automotive industry should be used. You present in a very precise manner. I have been an instructor in the past and can say without a doubt GREAT JOB

@SouthpawAutoworks 2 года назад

Wow, what a compliment!! I really appreciate you taking the time to write what you wrote. Much appreciated. Thanks for dropping me a line! PS - If it feels right to you, please help me spread the word about this channel. 1 Handed Transmission Rebuilder: (60-Sec Preview) ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-y3Vixa_Ec1E.html

@natedillard7353 2 месяца назад

That circuit is always worn out , valve and bore . Burns up alot of clutches … Great video , learned a lot man !

@SouthpawAutoworks 2 месяца назад

Right on! Appreciate your comment.

@TheBry_Guy 9 месяцев назад

Great information. troubleshooting my 4t65E and had no grasp of the terms I was being told. this explains SO much.... Thanks!

@SouthpawAutoworks 9 месяцев назад

Great to hear! Thanks for dropping me a line.

@cockasorrus7475 2 года назад

You are the enforcer of KNOWLEDGE brother! Your belief in getting closer to understanding the WHOLE concept of the workings within and troubleshooting, etc is spot on! I also concur wholeheartedly with the "dedication, self-confidence & belief" theory. I have rebuilt my powerglide in my 67 impala & the TH350 in my van and every time I drive either of them I FEEL A SENSE OF BEING CONNECTED! It's weird but I feel confident in knowing I DID IT! Maybe it's because I am not a accredited student of a trade school? I just really wanted to do it and did it! The beauty of it is there are great teachers out there such as yourself that help folks like me that want to do our own and feel that accomplishment! Thank YOU sir!!!

@SouthpawAutoworks 2 года назад

A power glide and a TH350...right on! I recall you mentioning future plans for a 700R4....in good time... I totally get what you're saying. It feels good to step of the old comfort zone, and tackle new things. It satisfies one of our most basic human needs; uncertainty. Dude, I really appreciate your ongoing support of this channel. It's always good to see your name pop up on here. Have a great week, man.

@cockasorrus7475 2 года назад

@@SouthpawAutoworks you did a fantastic job with the pathways! I built a TH400 I had laying around here also. I didn’t mention that because I have not tested it in a vehicle. It was a true experience building it as well. I have a 4L60/700r4 in my 76 C10. Somebody obviously installed it I haven’t gotten the truck back on the road to determine if the transmission is worthy yet. It may be a future project? The 47RE in my Dodge is great now with the ground issue resolved. (TCC searching) Most definitely on my agenda to enjoy the fruits of your labor!

@SouthpawAutoworks 2 года назад

Just now saw this comment.... For whatever reason, this comment of yours didn't appear on my end of things until today. Not sure sure what's going on... Right on. Really glad that you got that TCC issue sorted out. That must've been pretty annoying to drive.

@cockasorrus7475 2 года назад

@@SouthpawAutoworks you are burning 🔥 the candle at both ends brudda!! It’s all good! I wasn’t upset 😢 lol I am always happy to hear that you are doing well and I do appreciate your replies 🤙🏻

@joshuayoung6286 2 года назад

Really appreciate your videos. There is plenty of how to videos on the 4l60e’s but they rarely explain why. Thanx!

@SouthpawAutoworks 2 года назад

The positive feedback is appreciated. Knowledge is power... Thanks for dropping me a line! PS - If it feels right to you, please help me spread the word about this channel. Here's an easy way to share... 1 Handed Transmission Rebuilder: (60-Sec Preview) ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-y3Vixa_Ec1E.html 60-Second Preview of the video you just watched: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-yfXdx6AkqjU.html

@brandonrogers6855 7 месяцев назад

I thoroughly enjoy watching and learning from you. You are a great teacher and have dinner a great job with your videos. You explain everything so brilliantly. I want to thank you personally for all of your hard work and time that you have poured into these videos. God Bless your soul. I have learned so very much from you and now I know that I am armed with great knowledge that I can use throughout the rest of this journey we call life and I will make sure that I pass this knowledge on to others as you have done so wonderfully. I can't say thanks enough!! 🙂

@SouthpawAutoworks 7 месяцев назад

So glad you enjoyed the video. Thanks for dropping a line.

@juansprojects3056 2 года назад

Being a mechanic for over 15 years and I'm finally getting into the automatic transmission rebuild process. Your videos are like none I've seen on RU-vid really helping me understand how this transmission works

@SouthpawAutoworks 2 года назад

Right on! That's awesome! Is the 4L60E your first auto trans? The positive feedback is appreciated. Thanks for dropping me a line!

@juansprojects3056 2 года назад

@@SouthpawAutoworks yes 4l60e is mine. I decided it's best to practice on my own transmission first before messing with anyone else's. Mine was shifting really good and firm for the first 300 miles after rebuild. Then got a p1870 code. So that's what I'm dealing with now

@SouthpawAutoworks 2 года назад

Having the ability to practice in private, before a public performance, is always nice. It reduces the pressure... Did you have that code prior to rebuild? During the rebuild, did you install any kind of valve-body kit?

@juansprojects3056 2 года назад

@@SouthpawAutoworks yes I did full rebuild. New pistons, zpak 3-4 new load springs new bushings all around, wide bushings where applicable, wide band. 5 pinion planets (both) trans go shift kit. Boost valve .500 reason for rebuild lost all gears including reverse. No p1870 prior

@SouthpawAutoworks 2 года назад

Right on. ****Regarding P1870 code**** If you don't already know...that code is typically associated with the Torque Converter Clutch slipping excessively. Some 4L60E models apply the clutch all the way...resulting in no slip. Some 4L60E models apply the clutch, but only partially....resulting in limited slip. They did this to help minimize vibrations, etc. Either way, the PCM monitors the amount slip. If it detects too much slip, it'll throw that code. Regarding TransGo kit: Page 4, covers the Isolator & Converter Regulator Valve. What was the OD of your original valve? 0.441"?? 0.472"??

@brianworkman1959 8 месяцев назад

I did hydraulic circuit identification and mapping back in 1988 starting with ZF4hp-22 Nice computer automation

@SouthpawAutoworks 8 месяцев назад

Right on! Thanks.

@andrewballance4161 Год назад

Stuff like this just makes my day. Thanks

@SouthpawAutoworks Год назад

Your comment makes my day. Thanks for dropping me a line!

@joserodriguez2632 Год назад

Excelent information, so far the best transmision tutorial in RU-vid channel. Thanks for sharing.

@SouthpawAutoworks Год назад

Glad you enjoyed it! The positive feedback is appreciated. Thanks for dropping me a line!

@toodrunktotastethischicken 2 года назад

Hey man, you have a unique way of presenting the tech info in this video compared to even ATSG/ATRA. They need to take a page from your book. Keep up the good work.

@SouthpawAutoworks 2 года назад

I've got a lot of respect for ATSG & ATRA...so that means a lot. Thank you kindly. Thanks for dropping me a line! PS - If it feels right to you, please help me spread the word about this channel. 1 Handed Transmission Rebuilder: (60-Sec Preview) ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-y3Vixa_Ec1E.html 4L60E AFL Valve - Part 1: (60-Sec Preview) ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-yfXdx6AkqjU.html

@SouthpawAutoworks Год назад

I'm scrubbing through past YT comments, looking for something...and I came across your comment. Thank you, again, for what you wrote. It is appreciated.

@10malabdullah10 10 месяцев назад

Thank you the time you spend to create educational videos for everyone

@SouthpawAutoworks 10 месяцев назад

My pleasure.

@johneric3886 8 месяцев назад

I think it's smart how you break up the video from time to time and have a little pauses. This helps my mind to recollect, it's thoughts & take a mini break.

@SouthpawAutoworks 8 месяцев назад

Right on! Glad to hear that! I'll keep this in mind for future videos. Appreciate your input.

@20havenfun08 2 года назад

Thank you so much.... I don't build transmissions, but you make it so interesting.....

@SouthpawAutoworks 2 года назад

Glad you enjoyed it! It's not too late to start... ;) Thanks for dropping me a line! PS If you're interested in spreading the word about this channel...here's an easy way to share with friends, family, FB Groups, automotive forums, etc. (Roughly 60-second video) 1 Handed Transmission Rebuilder: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Mvv5Cd2cVW4.html

@jordanraynard7120 Год назад

Amazing job, doing my last year of school as an auto tech and this helped huge! thank you!

@SouthpawAutoworks Год назад

Right on!! That's exciting! Thank you for dropping me a line.

@maxt3592 2 года назад

Thank you for this information very informative looking forward to watching some other videos

@SouthpawAutoworks 2 года назад

You're welcome. Thank you for taking the time to drop me a line! PS - If it feels right to you, please help me spread the word about this channel. Here's an easy way to share... 1 Handed Transmission Rebuilder: (60-Sec Preview) ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-y3Vixa_Ec1E.html How the 4L60E valve-body works: (60-Second Preview) ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-fWPSaLeaOXI.html

@user-du8cs8sn2v 2 года назад

Your videos are great Robert. I've just rebuilt my first 4L60e. I've only run it at idle and the line pressure gauge fluctuates rapidly around 75psi (it has the modified boost valve). I don't know if this is normal, or possibly related to the way the camshaft makes the engine idle lope. Once I fix an ignition issue I'll test the line pressure at higher rpm, but I now at least have a better understanding of how the pressures are controlled and what may be wrong (if anything). Thank you so much for your efforts!

@SouthpawAutoworks 2 года назад

With stock parts installed, the base idle should be right around 55 - 65 psi. However, aftermarket parts (stiffer PR spring) will elevate the base idle some. Thanks for dropping me a line!

@user-du8cs8sn2v 2 года назад

@@SouthpawAutoworks thanks Robert. I am more concerned about the manner in which the pressure gauge rapidly flickers at idle, but hope it will smooth out with more rpm. I expected the pressure to be elevated due to the aftermarket parts.

@SouthpawAutoworks 2 года назад

Shoot, I meant to address that part of your original comment. Sorry about that. A rapid/excessive flicker of the pressure gauge needle, at idle, can indicate that there's a problem with the PR Valve. In the case of the 4L60E, typically not an issue with the valve itself. However, you could be dealing with a worn out PR Valve bore (in the pump casting). There are some other checks to make with the pressure gauge. More on that, later.

@cenick7254 Год назад

Hi , There is no one to explains like You . ( 👍 * 1000 ) with the best regards

@SouthpawAutoworks Год назад

Wow, thank you!

@henrymvillarl6895 5 месяцев назад

Thanks You from Venezuela 🇻🇪

@SouthpawAutoworks 4 месяца назад

Right on. You're welcome.

@archibongedem9968 10 месяцев назад

Thank you so much for this video, it taught me a lot today

@SouthpawAutoworks 10 месяцев назад

Right on!!

@joeberg9823 Год назад

What an absolutely awesome video. Thank you! I came here to watch this because of a 4t65e transmission and how it is always suggested to replace the AFL valve with an updated sonax/superior part. I now completely understand what this valve actually does and why this part wears out from moving so much and why it is recommended to ALWAYS replace it when inside the transmission. I assume it works the same way in the GM 4t65E (hopefully). Thanks again for the time and effort put into these videos!

@SouthpawAutoworks Год назад

It will work the same way (4L60E vs 4T65E). Glad you enjoyed the video, and got value out of it. Always nice to watch something, and it be worth your time....not always the case on RU-vid. Thank you for taking the time to drop me a line, Joe. The positive feedback is appreciated.

@codyd0g 2 года назад

Robert.... we like the video! You’re amazing... talented! So let’s see some of your amazing guitar work next.

@SouthpawAutoworks 2 года назад

Dana!!! I was just thinking about you and Gary, earlier this week. And boom....here you are. Crazy how that works. =) I'm gonna DM you!

@kudims 2 года назад

Great and knowledgeable videos, I watched almost all regarding 4L-60E. Question: if I want to make my vehicle start moving "happier" with brake pedal depress at Drive and no throttle (moving in traffic) - am I need to increase boost pressure in order to increase pressure inside TCC?

@SouthpawAutoworks 2 года назад

Thanks for the positive feedback. I'd like to answer your question, however, I'm having trouble understanding. Can you rephrase the question?

@kudims 2 года назад

@@SouthpawAutoworks when you stay at drive with brake on, and then you remove your leg from brake pedal, car starts moving. If I want car to move faster in such conditions, I need to increase momentum at TCC, right? To do this, am I need to increase boost pressure?

@SouthpawAutoworks 2 года назад

Thank you for clarifying. Yes, you would need to increase the momentum of the TC (Torque Converter). Just aheads up, the TCC is the Torque Converter Clutch. It's a clutch that lives inside of the TC. Some things that will have an effect on what you described are; 1). Engine idle speed. (this will increase momentum of the Torque Converter). 2). Torque converter design (stall speed)(angle of the fins that are used on the impeller/turbine). To the best of my knowledge, increasing the Line Pressure (via the boost pressure, or any other means) will not have have an effect on what you have described. Increasing Line Pressure will affect; 1). Clamping force applied to clutches and band. 2). Shift feel (soft, firm, harsh).

@user-te5xf5ir4f 2 года назад

I just love so much how you explain and illustrate. The info you give is gold. Besides the stock application, after you explain everything for some part, i would like to hear about mods that people do and how it changes stuff. For example : Stiffer springs in boost valve, Adding 1 more spring in the AFL valve

@SouthpawAutoworks 2 года назад

Glad you enjoyed it! I plan on creating follow-up videos that cover common problems, and solutions for each of those problems. I'd be happy to also cover mods and how it affects the system. Thanks for dropping me a line! PS If you're interested in spreading the word about this channel...here's an easy way to share. Roughly 60-second video... 1 Handed Transmission Rebuilder: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Mvv5Cd2cVW4.html

@PHLTHS 2 года назад

These videos are so amazing, Thank you for taking the time to create there. There's nothing as good as these on RU-vid. Cheers fella.

@SouthpawAutoworks 2 года назад

Glad you like them! I really enjoyed making this video. More to come!

@repairman969 Год назад

Robert Thank you for this excellent series of videos I have a 2001 GMC 4.8L last year when I turned from1 road to another (almost to a stop 90degree turn) and give it gas the trans seams like it goes to neutral I put a shift solenoid kit/filter & oil in and helped for a while I'm 67 years old and just learned to live with it, Now running on hwy it started fluttering and goes complete neutral and engine revs up a second or two then locks back in,, It seams okay when I start down the road (take off) and in reverse,, Any help would be appreciated, : Glenn

@SouthpawAutoworks 8 месяцев назад

It has me thinking fluid level? Do you know how to check the fluid level?

@fildavis2024 2 года назад

Wow! Super informative video! That’s a ton of work you’ve done to explain that. Gunna check out the video you recommended at the end. 👍

@SouthpawAutoworks 2 года назад

Awesome, thank you!

@dreece2000 2 года назад

cant wait for part 2

@SouthpawAutoworks 2 года назад

Right on. Thanks for dropping me a line!

@voidisyinyangvoidisyinyang885 2 года назад

stunning - AFL valve vid. thanks

@SouthpawAutoworks 2 года назад

Glad you enjoyed it. Thanks for dropping me a line!

@rakeshminj7024 Год назад

Very nice and informative video. It takes lot of effort and creativity to create such kind of detailed and easy understanding content to explain in such small length video. Keep doing this good work. Thank you !

@SouthpawAutoworks Год назад

Really appreciate your comment. Thanks for dropping me a line.

@toddphillippi3461 2 года назад

I admire your dedication! Lots of work to edit videos. I’ll be checking out the others too.

@SouthpawAutoworks 2 года назад

Right on. Thanks for dropping me a line!

@thegonz7833 Месяц назад

Very interesting and great delivery. Ive seen two so far and subbed, I use a Trans go jr. kits would be nice to know what TG is trying to achieve with each mod and change on a 60e

@basicdetail4512 11 месяцев назад

Thanks so mutch brothers i appreciate your work

@michaelthul6013 Год назад

Thank you for a great video and all the time you spend making them .I was wondering why it is important to have a lower than line pressure feed going to the solenoids . Is it because the electric solenoids cannot operate under the higher line pressure ? or because the lower AFL pressure is needed downstream of the solenoids ?

@SouthpawAutoworks Год назад

Good question. I would imagine that the engineers did this (using lower pressures) as a way to conserve Line Pressure. If everything consumed line pressure, it would be harder to keep line pressure stable. Thinking it would fluctuate wildly. You can learn more about how the shift solenoids, and the shift valves, work by checking out these videos: 4L60E Shift Solenoid - Part 1 (Basic Operation): ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-FaChWmcsAgI.html 4L60E: 1-2 Shift Valve + Shift Solenoid (Part 1) Basic Operation: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-jPhm76RDz6Y.html Thanks for dropping me a line.

@michaelthul6013 Год назад

@@SouthpawAutoworks Thank you for your quick response to my question . Your answer on conserving the higher line pressure sounds very logical to me . Now I'm thinking that the higher line pressure needs to be maintained so the clutches and shifting process work properly . Therefor I would believe your answer is correct. Thank you. I most definetly will be watching your other videos on automatic transmissions . Your videos are so nelpful and easy to understand in the way you present them .

@SouthpawAutoworks Год назад

Glad they're helpful.

@MagnomRock 2 года назад

Superb explanation. Excited for your channel to snowball with views; in anticipation of your following videos!

@SouthpawAutoworks 2 года назад

Thanks for checking it out! I'm glad you're here... I'm excited to get more people involved with automatic transmissions. Thanks for dropping me a line!

@xolanigola8091 23 дня назад

Hello Sir what happens when those (seal like) lines on the dividing plate are broken, like scratched off?

@rikkmalloy7892 2 года назад

Hi, I’m in Nc. I’d like to say thank you for your insight on facts. I’m working on a 2004 GMC envoy 2/wd 4.2 . I have no obd codes for transmission, but it slipping at 2nd to 3rd. And to get it to 3rd I’ll have it press the gas; and it still doesn’t feel good. Please please help me with this project. I’ve just put another transmission in the truck and really don’t wanna have to take it off. Also I’ve changed solenoids A/B. 4L60 E transmission

@SouthpawAutoworks 2 года назад

You're welcome. Questions: 1). With the shifter in D, when the trans tries to automatically up-shift from 2nd to 3rd, what exactly happens? 2). Does the problem occur when the engine trans are cold? Hot? Happens at all temps? 3). Believe it, or not, engine problems can/will cause transmission problems. Do you have any engine codes? Any other kinds of codes present? 4). What can you share about the currently-installed 4L60E? Rebuilt? Junkyard unit? As time permits, I'd be happy to try to get you pointed in the right direction. PS - If it feels right to you, please help me spread the word about this channel. Here's some easy ways to share with your favorite FB group, Reddit group, online forum, etc. Thank you. 1 Handed Transmission Rebuilder: (60-Sec Preview) ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-y3Vixa_Ec1E.html How the 4L60E valve-body works: (60-Second Preview) ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-fWPSaLeaOXI.html

@rikkmalloy7892 2 года назад

@@SouthpawAutoworks yes cps / misfire #6. 1st&2nd smooth- 2nd to 3rd stinks. Help me please

@hosalabad Год назад

Great video, the animations are fantastic for explaining the flow.

@SouthpawAutoworks Год назад

Glad to hear that! Thanks for dropping me a line!

@fkyrmhr0650 Год назад

You are amazing 👏 thank you for all your content

@SouthpawAutoworks Год назад

It's a labor of love. Thanks for dropping me a line.

@laritec1866 Месяц назад

I need help with my 2014 Chevrolet equinox..it failed to engage in drive after the gear service

@armandokatime8854 6 месяцев назад

Hello, great information that you give in your videos, I have a question to ask about a 4l60e transmission, the transmission in question was rebuilt with all its new kit, corvette servo and sonax accumulators without pin, the problem is that it kicks when shifting 1-2 the rest of the transmission works perfectly, do you have any suggestions about the problem, what could be causing it? Thanks in advance.

@colchilibeck 2 года назад

Hey man, amazing video! Congrats on starting a channel that will only grow!

@SouthpawAutoworks 2 года назад

Glad you enjoyed it. Thanks for dropping me a line! Much appreciated. PS - If it feels right to you, please help me spread the word about this channel. 1 Handed Transmission Rebuilder: (60-Sec Preview) ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-y3Vixa_Ec1E.html How the 4L60E valve-body works: (60-Second Preview) ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-fWPSaLeaOXI.html

@Crimsonengine 2 года назад

Looking great as usual!

@SouthpawAutoworks 2 года назад

Thanks, man! Really appreciate you stopping by.

@richardjohnson4373 3 месяца назад

I Have a Toyota Corolla that when you pull the shifter down into the low position the OBD tells me I am in 4th gear. I step on the gas and it is in first. Is this controlled by the 1-2 shift valve? It does have the code for silonoid p0741

@joffrejurado3030 Год назад

My first gear is not engaging. I replaced the 1st gear shift solinoid and nothing. I get solinoid circuit as trouble code, for all my solinoids. Also my ignition key won't come out of the ignition, not sure if that's relevant issue. Any suggestions?

@fantazibahieddine7772 13 дней назад

i hope to prepare dsg gearbox

@FilterYT 7 месяцев назад

Excellence! Thanks again.

@SouthpawAutoworks 7 месяцев назад

Glad you enjoyed it! Thanks for dropping me a line.

@philipwilliams6648 2 года назад

I am an old school mechanic and a retired auto body technician. I have rebuilt numerous transmissions in the past. I have attempted to rebuild my 4l60e in my trailblazer, may have been a mistake, acts as the pressure is to high. Keeps blowing cooling line off transmission. 5he4efore I am learning about the pressure flow. HELP if you can

@SouthpawAutoworks 2 года назад

Right on! (Regarding your experience with automatics and auto body repair) If the Line Pressure is in question, it would be a good idea to attach an automatic transmission pressure gauge (300+ psi) to the trans (pressure port located above the shift shaft lever, on trans). It should read right around 55 - 65 psi with the trans in Park, and the engine idling. However, I don't think Line Pressure is the issue... Automatic Transmission Pressure Gauge: amzn.to/3NWZGiX (Paid Link) These transmissions (and select GM vehicles) are known for blowing the cooler lines off of the trans (or the radiator). The 4L60E rebuild kit comes with two (2) blue colored E-clips. They're cooler line retaining clips. It's super important to replace those clips, with every rebuild. Furthermore, select GM vehicles have the cooler lines routed in a way that allows the cooler lines to move around too much. The excess movement causes the blue E-clips to wear out, and break apart......even brand new clips have been known to wear out prematurely. You might need to provide additional mounting points for the cooler lines, to prevent them from "jumping" around, during normal driving conditions. Hope this helps... DISCLOSURE: 🕵 Links provided are affiliated links with the associated websites. While there is no extra cost to the purchaser, a small portion of the sale goes to support this youtube channel. Thanks for your support!

@HajiWahid-hr7uu Год назад

Hi if you help me am a poor machine from pakistan When the gear jark(shaking) which valve is bad?

@Alejandro-sx8mb Месяц назад

Thank you so much

@SouthpawAutoworks Месяц назад

You're most welcome.

@29auto30 2 года назад

I'm doing a stand alone 4l60, and I don't want the shifts to be super hard, how can I control that with out the TCM? Could I use a rheostat switch? Thanks!

@SouthpawAutoworks 2 года назад

You mentioned "4L60"...which is another name for the 700R4/TH700R4. Yet, you are mentioning a TCM. I'm going to assume you mean the 4L60E. Please correct me if I'm wrong. Are you wanting every up-shift/down-shift to occur automatically? Or are you wanting to manually shift it for ever up-shift/down-shift? I'm not familiar with using a rheostat for a transmission. Are you thinking about using that to control the EPC Solenoid?

@29auto30 2 года назад

@@SouthpawAutoworks yes 4l60e, manual shift, wanting a stand alone for 4l60e, just wonder if there is a way to control line pressure with something?

@SouthpawAutoworks 2 года назад

Understood. Yes, I imagine that it's possible to control the electrical amperage supplied to the EPC Solenoid (Rheostat, etc). 0 amps: Max line pressure. 1 amp: Minimum line pressure. It's important to note, under normal operating conditions, the PCM varies the amperage. It varies depending on throttle position (TPS), among other sensors. The Line Pressure (via the EPC Solenoid/PCM) changes as the vehicle driving conditions change. I guess you could turn the Line Pressure all the way up, at all times. But, know that it's hard on the pump (probably reduce the life of it), it's hard on the rest of the driveline (shock), it'll make for one really hard 1-2 shift, etc. Wishing you the best on your stand alone 4L60E.

@brandtclark-truthbasedhors9110 Год назад

Great job

@SouthpawAutoworks Год назад

Much appreciated.

@kedcarcambioautomatico2929 3 месяца назад

Good bless you

@bryanchambers8868 2 года назад

Thank You

@SouthpawAutoworks 2 года назад

You're welcome. Thanks for dropping me a line!

@user-nr6ug4bu3k 9 месяцев назад

ты молодец хороший парень.

@SouthpawAutoworks 9 месяцев назад

Thank you.

@larryperry2094 Год назад

Great video. Really enjoyed it. I appreciate the time and thought you put into it. Solid knowledge brother. Well done and thank you.

@SouthpawAutoworks Год назад

Glad you enjoyed it! The positive feedback is appreciated. Thanks for dropping me a line.

@johnmwangi6291 2 года назад

What ..!!you are the Man

@SouthpawAutoworks 2 года назад

Glad you liked it. Thanks for checking out the video, and for dropping me a line!

@user-hp6tr5db4o 6 месяцев назад

Can a4l60 pump be surfaced on both sides

@SouthpawAutoworks 6 месяцев назад

If the pump is gonna get machined, then there are three (3) surfaces that need to get addressed. Great question. The pump cover is the half of the pump that houses the valve-trains. The pump body houses the pump rotor, vanes, etc. It's a common mistake to machine the two large surfaces on the pump cover and the pump body, and nothing else (only 2 surfaces). However, it's important that the pocket (where the pump rotor, etc lives) inside the pump body gets machined, too. If it doesn't, it can result in inadequate clearance for the pump slide (which needs to be able to pivot back and forth, during normal operation). Hope this makes sense.

@saulohenriquef 6 месяцев назад

Thanks!

@SouthpawAutoworks 6 месяцев назад

You bet!

@PUBGMOBILE-mh9cd Год назад

Thanks

@SouthpawAutoworks Год назад

You bet. Thanks for dropping me a line.

@joemessina2293 Год назад

I have a question, I rebuild 4L60e'S all the time but i run into an issue with the 2009 4L60e's No matter what i do i get a 1-2 shudder. Never in any other year just the 09's Is that something common or is it just my nemmines ?? I do need help as i am lost on this one.

@SouthpawAutoworks Год назад

To the best of my knowledge, that's not common.

@amadormartinez1256 2 года назад

Bro keep the videos goin

@SouthpawAutoworks 2 года назад

Thanks for the support. Thanks for dropping me a line! PS If you're interested in spreading the word about this channel...here's an easy way to share (Friends, family, FB Group, etc) (Roughly 60-second video) 1 Handed Transmission Rebuilder: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Mvv5Cd2cVW4.html

@caseyott7463 2 года назад

I have a 4L60e that slowly starts to overheat after 60-90 minutes of run time then starts to shift hard. It does have an external cooler. Any thoughts?

@SouthpawAutoworks 2 года назад

Under normal operating circumstances, the torque converter creates a lot of heat. The cooler is responsible for managing that heat. Plus, the TCC (Torque Converter Clutch), is also responsible for managing that heat, and of course performing other tasks, too. Do you have a check engine light on the dash/instrument cluster? Do you have a code reader, to retrieve codes? Inexpensive code reader tool: amzn.to/33uwVrj (Paid Link) DISCLOSURE: 🕵 As an Amazon Associate I earn from qualifying purchases. Some, if not all, of the links contained in this video description are affiliate links. This means that, at no additional cost to you, I will receive a small commission on any purchases you make through the website links provided above.

@caseyott7463 2 года назад

@@SouthpawAutoworks no check engine light on. I can check to see if it has any stored codes. The transmission was rebuilt a couple years ago. I'm going to change the filter/fluid and check to make sure the cooler lines aren't kinked. An external cooler replaced the radiator cooler when the transmission was rebuilt. Should I change the TCC solenoid when I change the filter?

@zaithwabanda4130 Год назад

What's the purpose of accumulator

@SouthpawAutoworks 8 месяцев назад

It's to soften oil pressure spikes...ultimately to soften the shifts, so they don't bang.

@rockabichebel 2 года назад

I like all your videos In my 4l60e gen3 my line pressure gauge 55 60 psi maximum just on Reverse give me 90psi You think the boost valve ?

@SouthpawAutoworks 2 года назад

I have read your other comments, posted on the other two (2) videos. Have not had time to respond to those... I'm having trouble understanding your question, on this comment/video. 1). With the trans in OD mode, your foot on the brake, and the engine idling, what is the Line Pressure reading? A). If you take your foot off of the brake and accelerate the vehicle (part-throttle), does the Line Pressure increase? How much pressure does it build?

@rockabichebel 2 года назад

@@SouthpawAutoworks thank you for your reply On OD the max pressure 60 psi I have with my foot on break and second on throttle with 2500 RPm 2 also maximu 60 i dont have more than 60 psi Juston R reverse the max 90 psi

@SouthpawAutoworks 2 года назад

The Line Pressure should be roughly 55 psi with no load placed on the 4L60E (engine idling). But, as engine load increases (more throttle), Line Pressure should increase, too. This ensures that the clutches don't start slipping, and burn up (fail). Line Pressure is affected by: 1). PR (Pressure Regulator Valve) (Sets base line pressure [roughly 55 psi]). 2). The Boost Valve (raises line pressure above base pressure). 3). EPC Solenoid (this supplies oil pressure to the Boost Valve). 4). PCM (computer). (Controls the EPC Solenoid output pressure). 5). Engine load sensors (they "sense" engine load). If there's a problem with the engine, or one of the engine sensors, it can cause (or mimic) 4L60E problems. Questions: 1). Is the engine running good? 2). Do you have a check engine light on? Have you pulled codes? 3). Was the transmission recently worked on, or rebuilt? A). If recently rebuilt, did you do the rebuild, or did you hire a professional?

@rockabichebel 2 года назад

@@SouthpawAutoworks thank again and again My car hummer h3 2006 L5 3500 swaped to engine 6.0 gen3 tuning with MAF deleted with my h3 transmission 4l60e We change the bell housing and pump and torque converter and shuft and dram after that i drive the car for 2 months verry whell but i have a little slow shifting between 1n 2 n 2 n3 So we disasemble and change all the clutches and we change also the valve body steel plate When we make the test drive i find i have no power in the gears and start to slip on 2000 rpm n2 n4 gears after n3 gear 1 n R work good with no slip I use to test the line pressure i have no pressure max 60 psi

@CORVAIRWILD 2 года назад

2nd view from rainy Columbia SC

@SouthpawAutoworks 2 года назад

Right on! Thanks for tuning in...and dropping me a line!

@osbyheaden156 6 месяцев назад

I have 200psi line pressure all the time , keeps blowing pump n can't seen 2 get it fix from shop

@SouthpawAutoworks 6 месяцев назад

Has me thinking these possibilities: 1) Worn out Pressure Regulator valve/bore. 2). Pump slide stuck. IDK the history of your trans (high mileage, recently rebuilt, etc), and I'm unable to road test, or scan your vehicle. So, I'm shooting in the dark...

@osbyheaden156 6 месяцев назад

@@SouthpawAutoworks po748 Rebuilt

@SouthpawAutoworks 6 месяцев назад

That code is aimed at the EPC Solenoid (Electronic Pressure Control). It has a direct impact on the line pressure...however, it's not the only thing that can affect line pressure. You can learn more about the EPC Solenoid, by watching this video... ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-PY1trZeLqTM.html WARNING: Do what I do at your own risk. If it were my 4L60E, I'd be taking a closer look at the EPC Solenoid. I'd monitor the EPC Solenoid with a scan tool, to see what the PCM is commanding (duty cycle), and also verify actual amperage passing through the solenoid. However, if I didn't have a scan tool (or if everything previously checked out on the scan tool), I'd gain direct access to the solenoid (drain oil, remove oil pan) and get my electrical meter probes right on the solenoid electrical terminals, and check the resistance. It should be right around 3.5 - 8 ohms.

@osbyheaden156 6 месяцев назад

Bad computer finally!!

@TeomaveBahia 6 месяцев назад

Very Very Very good! Like 👍👍👍👍👍👍👍👍👍👍🇧🇷🇧🇷🇧🇷🇧🇷🇺🇲🇺🇲🇺🇲🇺🇲🇺🇲🇺🇲

@horacioanayaroman 2 года назад

Really good explanation and great work doing the animations of the fluid path. What is the app you used to illustrate the oil path?

@SouthpawAutoworks 2 года назад

I can't be giving away all of my secrets. ;) Thanks for dropping me a line!

@johnmwangi6291 2 года назад

🤣🤣🤣

@fernandohood5542 2 года назад

How do you do those animations. A++++.

@SouthpawAutoworks 2 года назад

Very carefully... ;) Thanks for dropping me a line! Here's the latest video! It went live, minutes ago... 4L60E Shift Solenoid - Part 1 (Basic Operation) (60-Sec Preview) ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-JXFjMlsqirs.html

@saulohenriquef 6 месяцев назад

Why TCC is not fed by AFL?

@SouthpawAutoworks 6 месяцев назад

TCC stands for Torque Converter Clutch. There are two (2) different solenoids associated with the TCC. 1). TCC PWM Solenoid (located in/on the VB [valve-body]). 2). TCC Solenoid (integral part of the wiring harness, that's mounted into the bottom of the pump)(On/Off solenoid). The solenoid mounted on the VB is fed AFL fluid pressure. However, the solenoid mounted on the pump, does not. Instead, it's fed Converter Feed oil pressure. It's essentially line pressure. Hope this makes sense, and helps.

@saulohenriquef 6 месяцев назад

@@SouthpawAutoworks Thaks a lot. I got a manual and I didn't understand. Now All makes sense. Thanks!!!!

@SouthpawAutoworks 6 месяцев назад

Right on! You bet!

@user-sl5xm6pi8o 20 дней назад

Sir .

@hw5091 2 года назад

this is fucking great. channels going to be huge man. Also, I have an '08 silverado, would those sonnax boost valve and pressure regulator vale work with that pump (I know there are a bunch of different models)? Also I have the turbine speed control sensor in the way of the boost valve, any way around that or does the pump have to be removed?

@SouthpawAutoworks 2 года назад

The speed sensor wiring harness is, unfortunately, in the way of the PR Valve valve-train (includes the Boost Valve/Sleeve) on later-model 4L60E units. In order to gain access to the PR valve-train, the trans has to be removed from the vehicle, and the pump has to be pulled out of the transmission. There are different lengths of Boost Valve/Sleeve, depending on year of 4L60E. Also, the PR Valves come in different sizes. There's the "regular" thickness (aka OEM), and there's an oversized thickness. If you suspect the PR Valve bore is worn out, you could either: 1). Use an aftermarket oversized PR Valve. Note: This requires oversizing the bore, and tools are required to do this. 2). Use an aftermarket valve that utilizes longer valve lands in order to use unworn parts of the bore, to essentially restore the health of the PR valve train. Just to be clear, it's not an oversized valve...just a modified valve...that requires no extra tools to get the job done. Your encouraging words are appreciated. PS If you're interested in spreading the word about this channel...here's an easy way to share with friends, family, FB groups, automotive forums, etc. (Roughly 60-second video) 1 Handed Transmission Rebuilder: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Mvv5Cd2cVW4.html Thanks for dropping me a line!

@hw5091 2 года назад

@@SouthpawAutoworks Will do, and thanks for the reply. I was thinking the transgo lengthened pressure valve and new boost valve. I suppose I could get a new pump cover all together, and just use gm parts too. Also did the line pressure test, when I'm having a problem at idle (have to tap the gas slightly to engage 1st gear, otherwise its in a half neutral state), or shifting into drive (the problem only happens when the trans is warmed up past about 150f or so), pressure is about 46psi. After that tap of the gas pedal, it jumps to about 65 n goes like normal. When I'm not having that issue, pressure is about 65 or so at idle. Every other gear works just fine as you drive. R has no issue, neither really does starting in 2, but then again it's low torque so the delayed engagement could be there a bit, but not really noticeable. Judging by that, you thinking pr n boost valve is likely?

@jodavaro1670 Год назад

💯💯🙋🏻‍♂️

@SouthpawAutoworks Год назад

Not a bad score... Thanks for dropping me a line!

@robertholderman7552 Год назад

I got a 4L60 2002 I really appreciate if you could do something newer .. .. please “: • )

@SouthpawAutoworks Год назад

Copy that.

@anesboitevitesseauto 6 месяцев назад

TOOOP

@marknaravas318 2 года назад

Great video, but I’m an old trans tech that sits down for hours and looks at oil passage diagrams for automatic transmissions. Kinda like my automatic transmission porn

@SouthpawAutoworks 2 года назад

Hahahahaha!!! Love it... Thanks for dropping me a line!

@marknaravas318 2 года назад

@@SouthpawAutoworks why don’t you show a rebuild of a really fun transmission like a AX4S or an AW-55 (those really are hateful shitboxes!)

@SouthpawAutoworks 2 года назад

Haha there ya go.

@SouthpawAutoworks Год назад

I'm scrubbing through past YT comments, looking for something...and I came across your comment. LOL Thanks for the laugh...again. Appreciate you.

@marknaravas318 Год назад

@@SouthpawAutoworks what’s the definition of a auto trans rebuilder: INSANE!

@lg1728 2 года назад

Hrh hos are you youf awesome on knowledge of 4l60e i got a 4l60d 4x4 2004 tahoe fullh rebuilt n made it 2 blocks n no gearz tranny wont do nothing no reverse or forwards gears znc ideas

@SouthpawAutoworks 2 года назад

I'm having some difficulty reading your comment...but, here goes. Questions: 1). With the engine off, check the trans fluid level. Start the engine, and check fluid level again. Did the fluid level drop? 2). What is the Line Pressure reading with the trans in Park, and the engine idling? Note: Use an automatic transmission pressure gauge (rated over 300 psi). 3). Did you happen to punch it (the throttle) right before you lost all gears? Automatic Transmission Pressure Gauge: amzn.to/3NWZGiX (Paid Link) DISCLOSURE: 🕵 Links provided are affiliated links with the associated websites. While there is no extra cost to the purchaser, a small portion of the sale goes to support this youtube channel. Thanks for your support!

@lg1728 2 года назад

@@SouthpawAutoworks j dudnf jack stand test 1st befor i tryed dri b ingnitnkm not goin lie to hou and yes sir i did punch it beforbi lost gesrx however sir i never had reverse at all andbghen ig started actin likebit was ckming around but forward was string but wojldng switch gears at likd never lock up and wouldvdlip and fluix sur was with a transt as r rebuild kit new torque convert we r piston all new clutchs all steels bew or c I eaned i mean all new bushings pump rebuilt all new papers andvseals a casebof new transtar fluid j mean all new barrings etc im a mechanic my friend helped me hse to rebuild don garlitts drag racing motorsvand transmissions for him hes got his shop here in houston anc thatsvwere i work also fullybredtoring cars ground up

@lg1728 2 года назад

My tranny lost all and no gesrs it wont do nothing new rebuild everythings new except the case basically

@lg1728 2 года назад

I made ut 2 blocks let off gas n then nothing and it wont stah in park either u think msin shift valuve in valuve body?