Something cooked my TCM (3000MH Allison Transmission, No Display, No Crank, No Start)

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Here is the link to Part 2 of 3 • What else got cooked i...
Join us as we fix a no start, no transmission display (push button) on a 2001 American Tradition 8.3 Cummins ISC with a 3000MH Allison transmission, while underground! We keep the RV in a limestone mine for the winter and something happened to my transmission control module while it was there.
Video mentioned where a bad ground can actually cause high amperage • Fuel Pump Relay Problem
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27 янв 2021

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@ScannerDanner 3 года назад

UPDATE PLEASE READ!!!: I have two different disconnect switches, one for the house batteries and one for the powertrain. The mine where it is stored, does not care, and still REQUIRES the battery cables to be disconnected. ALL OF THEM. This year I only disconnected the negatives to make it easy for them, in case they needed to move it. 😒😒 Also, the RV has only been there for a month (a lot of you mentioned moisture and corrosion, but this was not the case either), batteries are only 2 years old and were fully charged when I left it. Many of you suggested weak or dead batteries. This was not the case. That doesn't rule out them jump starting though. Maybe if one or more of those grounds were not connected is very possible they thought that it needed a jump, if it didn't start. Many of you suggested they may have jumped it with 24 volts. This is a very real possibility. Remember, other circuits are not working too! It is NOT just a blown TCM capacitor! Finally, my RV is NOT a CAN system. The gauges are stand alone and the oil and coolant temp gauges in particular simply have a power, ground and sending unit wire, with separate sending units, that goes to each of them. The oil pressure sensor I showed in the diagram is for the ECM, NOT the gauge, sorry I didn't make that clear. I showed that sensor to show you guys that I was confident I didn't have an oil pressure problem because the ECM would have set some warning lights and possibly even shut down the engine. That's all for now. You guys are awesome! I learned a lot from the comments, thank you!

@Goldwing1500rider 3 года назад

Yes!! It takes 2 regular batteries to fire up a diesel. My dad has 2 catapiller( spell) batteries connected on his. No one cares if RV theirs or not.. you have lot batteries in yours that I never seen.. I’m still old school! Since pcm/ecm been added to rvs, wire may fell behind the batteries, it must reach certain voltage for anything work otherwise, zero voltage?? Like your voltage reference of 5 volts... I’m only guessing here.

@1abeautifulmin 3 года назад

Hello SD and thank you for sharing all your knowledge to the people that needed or interested in.Inrelevant question with this video but i thought if i comment on a new video of yours you might see it and reply if you have time. I believe i have a bad coil pack in my Hyundai tucson 2008 2l 4 cylinder engine which gives me a p0304 misfire for a while now.All new spark plugs and cables and i tried the arc quality of the coil pack with your test light trick and compare to the other 3 the one that is giving me misfire seems to be a little weaker like 1/4 of an inch lower arc and maybe inconsistent.Can that be enough to cause misfire?

@smedleypdolittle 3 года назад

Then call MSHA and get a final answer!

@charlesmecum5009 3 года назад

Paul I hv a question in the grander scheme of things doesn't mean much, but why can we read resistance in plug wires, but multi meter will never show continuity meaning buzzer on multimeter

@hightttech 3 года назад

@@charlesmecum5009: Continuity mode in DMM will only beep when ohms less than a certain threshold. e.g. say 30 ohms is threshold on your DMM, then no beep if plugwire ohms greater than 30, but beeps all day at 30 or less. Check spec sheet of your DMM for continuity mode ohms threshold.

@mph5896 3 года назад

I would relocate the 3 grounds. Make it so there is only 1 large cable to hook up.

@ScannerDanner 3 года назад

good thought!

@sumduma55 3 года назад

I was thinking the same thing. Perhaps one of those quick disconnects where the cables stay connected to a terminal that bolts to the battery.

@cwj9202 3 года назад

@@ScannerDanner - I recommend proceeding one step further and installing a master ground disconnect switch, which would eliminate the need to disconnect all the batteries. I think a simple 8 X 11 sheet printed with instructions located in the battery compartment would suffice for someone to understand the utility of that arrangement; BUT, I suspect the facility personnel may not possess the appropriate training to understand the benefit of that set-up, as they do insist on unnecessarily disconnecting both positive and negative battery cables - stupid but oh well!

@TonyRule 3 года назад

@@cwj9202 It'll be some dumb 'policy' that they have to completely disconnect. Written by someone that doesn't understand circuits.

@mph5896 3 года назад

@@cwj9202 Ha, they are not going to read a 8x11 piece of paper on what to do. Make it simple and easy and you will be fine.

@SinCityAnimal 3 года назад

I think you are bang on with the idea of reverse polarity with a jump pack. Was the first thing that came to mind for me

@davidostring1289 3 года назад

Thank you for sharing your experience. I can't wait until late February or April. Problems are opportunities for more learning.

@brp82286 3 года назад

I agree with the idea that the ground was loose or not completely installed. CEMF can be very damaging when it doesn't have anywhere to go Happy to see you got it fixed up.

@ScannerDanner 3 года назад

thanks for your help with the wiring diagram stuff too my friend. I am super thankful I didn't need it

@brp82286 3 года назад

I'm happy you didn't need it either. It was horrible 🤣😂. We get spoiled by these interactive color diagrams

@richard1835 3 года назад

Great videos by Paul and his team. Thank you

@robertmedina6875 3 года назад

Sorry to hear about this Paul😐 I hate it when people mess with my stuff and that's the very reason why! God bless you brotha!💯

@davidsawyer1599 3 года назад

Regretable. "I left a note." It's a very hard pill to swallow no doubt. What did I learn? Get a storage facility and have my customers sign their rights away in order to use it. You are top notch Paul. Taking the high road......again.

@ivaneu1 3 года назад

I really think it happened because the wrong polarity jump start, it's happened a couple times in my company because my co workers didn't pay attention. In last time they blowing up a capacitor on Cummins PCM. Thanks Paul to sharing your experience with us.

@englishrifleman6556 3 года назад

You should ask them if you could fit Isolator rather than keep hoping all those grounds. I also have first hand experiance of grounds being missed. Result = That power will find a route to ground through something. And its generaly a mess when it does. Good work DAN. Lol Paul

@georgebonney90 3 года назад

Looking forward to part 2,thank u mr Danner 👍

@ScannerDanner 3 года назад

It won't be until April but I absolutely will be doing more on this

@ddemier 5 месяцев назад

@@ScannerDanner Scanner Danner Im having a similar issue on my 1998 Discovery Fleetwood 37ft diesel. Its been parked for a year and half not hooked up to anything and put in a new battery to go start the diesel engine and I have 0 current to the transmission display and dashboard. I can start the generator and coach interior lights come on but I got nothing to the dash so no crank no start. I will start with checking the BCM connection but is there anything else I can check to get it started?

@AlienBros 3 года назад

Scanner, Paul, Dan, same thing all synonymous with ScannerDanner.

@Goblinv3 3 года назад

i like this, it's like a field trip.

@alfee9411 3 года назад

exactly lol 100 bill says they temporarily connected the cable and cranked and jumped while still have a loosey cable...or more. 80-90% of my service call work has been a loose connection and / or a ground wiggle test on ford was a real thing. still is !

@zimbab5748 3 года назад

Make a separate positive and negative jump point in the bay. No one needs to remove terminals or mess with your leads. They may have left the ecu powers and grounds connected, and jumped the battery cable only? Electricity finds its way through the ecu to the drained batteries it is connected too. The battery sucks power through the ecu.. Nice to know the ecus are plug and play! Thanks as always for teaching, I have learnt loads from you over the years!

@ScannerDanner 3 года назад

Mine policy, doesn't matter that I have cut off switches already. Cables must be removed smh

@richard1835 3 года назад

Yes!! Happy for you Paul

@steveanderson4553 3 года назад

Great Video Paul ! I really enjoyed watching. 👍

@tecnaman9097 3 года назад

Wow! Plug and play module. No programming, no security access required, no paying extortianate downoad fees. Just like the old days Paul..😊😊😊

@southpaw9339 3 года назад

Personal experience with this and I was told this by the Allison shop that fixed it. Trying to start a coach with a low battery will fry the TCM's on these Allison's. $1500 lesson learned.

@arthurfricchione8119 3 года назад

Well Paul (DAN ) this was definitely a different type of video. Nice change of pace. Hope you continues to in the spring. Thanks for sharing buddy and stay safe and well Artie 👍 Paul I doubt you will ever find out. Sometimes you just have to bite the bullet and soon it will just be a memory,

@jeffgrizzel9499 3 года назад

Rodent damage led to bare wire shorting during idling. Just a thought. Thanks for all you do for us.

@waynetyson3951 3 года назад

Love all your videos Paul 👍👍👍

@Metal_Mechanic 3 года назад

I think something definitely happened that you’re not getting the full story to. Just too many things that don’t work now that worked when it was put away. Looking forward to the deep dive into troubleshooting. I’m relatively new to the channel (since about August of last year) but since then I’ve watched probably over 100 hours of your videos. I like how you get into such detail and leave no stone unturned to find a fault and how you show multiple different ways to find the problem because We all can’t have $10,000 scanners “at the moment”

@ScannerDanner 3 года назад

my man, thank you! Glad you are here. I learn from you guys too and it is awesome! God bless

@mikejmardis 3 года назад

For non commercial diesel guys, commercial air brakes fail engaged. When you lose pressure, the brakes engage. Air pressure pulls the shoes off of the drum. That’s why you have the alarm. To let you know you have lost pressure and to let you know when you have enough pressure to disengage the brakes.

@paulfiebke3909 3 года назад

Nice to have a place to keep your RV safe and out wether

@ScannerDanner 3 года назад

it was nice, but last year someone stole about 85 gallons of fuel from my tanks and this year, well, you see what happened. Not sure I will be going back

@chriswey5385 3 года назад

As a truck driver I have made a few deliveries in the mine in Missouri. Yes very true about the big exhaust fans you don’t smell anything or at least I didn’t

@PistonShack 3 года назад

I like this type of storytelling videos. Thanks for the great camera work! Cheers

@ScannerDanner 3 года назад

I'm glad you liked what Caleb and I considered not so great a video! Seems Caleb and I were wrong lol

@PistonShack 3 года назад

@@ScannerDanner Yeah. I watched 100% up to the end! Waiting for spring updates fixing RV. God Bless!

@Hgfk2345 3 года назад

Thank you for your video on dig information video I've been trying to become a better technician and I've been through the votect and dealership training and after all those I still didnt really understand how to put the training into play with the real world issue. But I was laking some understand just wanted to say thank Paul for the extra knolage u put in it. Your video were a blessing for me to learn more and I can also share the same with others keep the faith my friends

@petecurran3995 3 года назад

Awesome hunch there Paul. 👌🏻 You're right, all the other things not working shows something suspicious. Folk make mistakes, they should just hold their hands up to it.

@twistedwrench490 3 года назад

I’ve seen this before in the vessel industry! It’s definitely a charge pack mishap. All of the dozens of computers have a diode built in to protect them. Diodes are one-way valves for electrical current flow. They are installed backward so they are turned off all the time, except when battery cables or jumper cables are reversed. Reverse polarity puts the diodes in the circuit so they are turned on and act like a short circuit

@MakerTools 3 года назад

Thanks for the great videos, man!

@blake8297 3 года назад

Prime reason to not let people touch your stuff.

@craigrussell-jones3511 3 года назад

Very nice intro. Thanks Dan

@ScannerDanner 3 года назад

lol, thanks

@zxyqwerty123 3 года назад

If the ground was bouncing enough to cause that damage you’d see scorching or pitting in the ground as well. I like the other suggestions of making it all one connection at some point in the future too.

@travisgriffin1998 3 года назад

yo scannerdanner, thanks for the videos! you have thought me alot brother

@albi2k88 3 года назад

Maybe rerouting that additional grounds to chassis ground will fault proof. After that only one ground wire needs to be connected to start engine.

@HotRod-wv4vm 3 года назад

Looking forward to the next update

@user-io3hw7hx7q 3 года назад

Awesome outstanding job have a great time thanks

@kimrobinson728 3 года назад

I really believe your right about the battery

@kimrobinson728 3 года назад

I have seen other things on diesel pushers get cooked same way

@earlwitherall894 3 года назад

Hi Paul, isn't that a piss off that they didn't tell you the truth about what happened. Pretty cool storage area. I liked watching the video, roadtrip diag. I ran into something similar where it let the smoke out of a module. But mine was associated with positive cable. I guess it wouldn't matter if it's negative or positive connections. Looking forward to your follow up in the spring. Stay safe.

@Pablo_Automotive 3 года назад

Thanks a lot team Danner

@francoamesadab 3 года назад

este tipo me cae muy bien, se me hace muy buena persona. que mal lo que le paso con su camión. maestro mil gracias por su enseñanza.

@Goldwing1500rider 3 года назад

I agree with lots comments here, personally don’t trust anyone messing with my Camper, as my dad did with his RV, insulate and combine all negative onto one post, so have one cable to disconnect..I’ve never seen that many batteries in your RV. As I recalled, wet batteries my dad had always dried, always had to carry distilled water cause batteries kept overheating. Alternators that time has capacitors kept raising the voltage, repaired the alternator components few times for him. I have 3 rebuilt alternators in my garage ready in case my dad screams get my butt out where he is to replace them... my opinion possibly someone cross jump and shorted something like you said. Could have spiked the alternator components. ( like cranking over not thinking they screwed up spiking backwards if you guys catch my meaning)

@giannhsevilarcher4389 3 года назад

Imagine the expense to tow or get a mechanic there to fix the issue, I wouldn't trust my car to that company, glad you kinda solve it!

@patriot2164 3 года назад

Yeah , Just want to know for your own piece of mind , To have a electrical problem and no answer and have to hook up a "new" Module without knowing why could be a cause of anxiety , High anxiety ! Good guys finish last it seems ! Can't wait to see the upcoming ending , no gauge , charging system irregularities 2020 continues !

@magrisers 3 года назад

I had to deal with Mickey-Mousy diagrams like this before,it is a joke. Knowledge and experience is all you got now.

@katintp5854 3 года назад

Whatta cool place to keep your RV😉 Nothing like this in New Zealand storage facilities

@godfamilycountry4211 3 года назад

Hey PAUL😃. Thanks for the video. New sub and learning so much. Not as fearful of auto electric testing and diagnosis now.

@ScannerDanner 3 года назад

Awesome! Welcome

@CamelGarage 3 года назад

It would be awesome to see a tcm repair video! Please please please!

@richardhendrickson450 3 года назад

Irv2 is a great forum for info on your coach. And I would look to whoever the chassis belongs to for your instrument wiring as well.

@danielmusat597 3 года назад

Makes me happy when you fix something! About your issue: those lithium capacitors are well known for failure in AC ripple. They are very strong and long-lasting otherwise. That's why they are used in automotive. My advice: put an oscilloscope on the output of the alternator and see what's the ripple. There might be the explanation for this stupid fault. And I didn't see any ESD diodes on the inputs of the TCM module. Maybe they are there but didn't appear in the images. However a small ripple will destroy the capacitor without triggering a ESD diode. Hope to see you happier and more confident in the next video!

@danielmusat597 3 года назад

Tantalum is what I mean by lithium... my bad.

@ScannerDanner 3 года назад

I'm with you on this possibility, but what tells me otherwise is the oil psi gauge is now not working and also the house batteries not being charged by the alternator. I also am pretty sure I am going to find other things not working as they should, but I'll need it back home first to confirm.

@danielmusat597 3 года назад

@@ScannerDanner I insist on my idea to the end: measure ripple at the module pins and even inside the module if you can. It might be a good start.

@ScannerDanner 3 года назад

@@danielmusat597 of course, I will do that before I bring it home, but I smell some b.s. from the people in the mine for sure

@krystle4248 3 года назад

@@ScannerDanner do they know who you are? Not to be a snob about it, but seriously asking if they know what you do or not? I bet you're going to hear from someone there soon. :)

@robinsonsmotorcycleandauto3929 3 года назад

Good use for a decommissioned mine. Sucks to have stuff like that happen when its in storage. Nice RV for traveling in.

@ScannerDanner 3 года назад

Right? I'm counting my blessings my friend

@CRAZY_VIDS07 3 года назад

Awesome 👌

@marknaravas318 3 года назад

You should try cranking a 53’ trailer down in the mines in Kansas and Missouri; the national seed depository is down there and it’s very easy to get lost in them.

@garyradtke3252 3 года назад

I tend to agree with all who have suggested a weak intermittent ground as you also said. It's also possible an incorrectly connected jump pack or a 24V pack on a 12V system could also cause this. In the marine world we use battery disconnects and also put the heaviest load cable (main start) on the battery stud first to eliminate any connection points between the battery lead and the main cable. The stud it's self where leaded in can be a resistance. I found that out with the modern resistance battery testers.

@SmittySmithsonite 3 года назад

I'm betting they killed the battery because someone left something on with the batteries connected (they were low to start with from sitting all this time, and/or your alternator failed), and they screwed up hooking up the jumper cables or pack. Happens alot in the auto auction world. Pretty cool storage place though! Constant temp and humidity I would think. I've seen a RU-vid trucking channel that had to drive in there before, if this is the same one. Glad you got it fixed! Today I had TWO Napa brake caliper failures one after the other - one in the wife's '93 940, and another in a customer's '06 Xterra. The 940 made it 2 years, 2 weeks, while the Nissan made it about a year and a half. The Xterra was run until the pistons popped out of the caliper! All that's left of the pad is tinfoil thickness of what's left of the backing plate. The pistons became the friction material! INSANE! Cardone remans - figures. Anyway, glad you filmed the drive in - that was cool!!

@gregoryfairchild2460 3 года назад

Zip Tie those grounds together so they don't forget one. And post a battery wiring diagram at the battery

@zacharyaleksovski9746 3 года назад

I was waiting for that Green Man guy to pop out one of the corridors.

@ScannerDanner 3 года назад

😂 oh he was there, but I didn't film my first visit

@sergesimonov1767 3 года назад

Hi Paul! Connect earth via power switch. Like a military car. Then there is no need to tighten the wires.

@johng1077 3 года назад

I would say a group of mice were out partying and might of dropped a large can of tuna across the battery...nope, ie think you pegged it... looking forward to more videos in the spring of the RV. Hilarious movie with same name, RV.

@davidbrown1037 3 года назад

If I had to deal with that type of Battery Disconnect issue, I would install a couple of Marine Type or Industrial Type of Battery Disconnect Switches, that would allow the batteries to be disconnected by turning the mechanical switch, and avoid any cable disconnection at the batteries. These are usually installed on the POSITIVE CABLE with any multiple wires connected at the switch and ONLY a single positive cable to the battery. It would also be good to install a Negative Buss Bar to connect all grounds to with only 1 cable to the Negative Battery Terminal as well. That eliminates multiple connections at the battery that could be hooked up wrong or missed AND can generate corrosion by being connected to a LEAD post with a steel stud and nut. Cole Hearse makes several models for Boats and Large Diesel Trucks and Busses. They even have a warning like "DO NOT TURN OFF WITH ENGINE RUNNING" to protect the alternator and charging system. A bad connection to an alternator can cause severe voltage spikes. With proper switches installed, turn them on and leave them on through the summer while the vehicle is being used, the OFF when leaving the vehicle in storage. You also have the benefit of easily and quickly cutting out either the house battery or vehicle battery without the need of tools, should there ever be a problem with one of the systems, like a welded Starter Solenoid. Also good for killing power to either system for trouble shooting or repair. (Starter replacement.) I have had several Boats and Travel Trailers and have ALWAYS installed Battery Disconnects. Being an Aircraft Maintenance Engineer, we are used to Aircraft Systems which have a Master Switch, which connects the Battery, or each Battery to the main BUSS Bar in the system. Aircraft batteries are always connected and disconnected with that solenoid, by the MASTER SWITCH in the cockpit and some systems have a large Diode that can take alternator output around the solenoid to prevent field collapse voltage spikes by sending it to the battery. This could save you a LOT of problems in years to come. It certainly makes it easy for a novice to use safely.

@vancheeliu6794 3 года назад

Hi, Paul, The component that was burnt is a SMD Tantalum Electrolytic Capacitor which we know about 1/100,000 chance that it will develop short circuit spontaneously in the field and burn itself and the PCB, even if there are no over voltage or temperature. The intermittent on and off of unconnected ground wires and the battery's low resistance may increase the failure probability. So I think it is only a bad luck situation.

@TheCarTakerGarage 3 года назад

Liked before even watched it (laughs ) ..The 26 next minutes of my evening is now reserved.See ya later mister D , and C ;) Stefan

@matth5309 3 года назад

You need a motion activated battery compartment cam aimed right at that terminal. They had to have left those smaller grounds off. If it happens again and they are the culprit give them the video along with a big bill!

@johnreid859 3 года назад

Hind sight. The note on the cable was my first thought. I would’ve pointed the finger at myself. Those people don’t know my rig. Oh well, live and learn. Like you said, lots of moister. Perfect conditions for electrical problems.

@Portuguese-linguica 3 года назад

Danner paul scanner ok 👌🏻 . That is a nice RV you have and hope some one tells the truth . I believe that they didn't hook them up right and it caused the short . As you said things don't like being unplug and plugged in repeatedly .

@Markb8608 3 года назад

I have several ground leads on my boat. Going to zip tie them after this video. I painted the top of my batteries with white paint on positive in case someone tried to hook them up wrong. At least the odd color would make them stop and think. Hopefully.

@dnlmachine4287 3 года назад

Looks like a tunnel scene from Last of Us. Shudder. Love the vids Mr Dan(ner)! Stay gold.

@ScannerDanner 3 года назад

They did film a horror movie in there. Not sure which one lol

@JuanOrtiz-mo8be 3 года назад

i was praying with you as you were silently praying and it worked. Thank GOD

@canadatransistor 3 года назад

I would bet they checked and disconnected everything without notifying you. Mines are really sticky about sparks, detonations, even radio coms that are not authorized. I would bet they put a ground on the wrong post or disabled a ground on one of the batteries leaving a floating ground. Probably started the vehicle and it detected as a result under voltage so the charging system worked overtime to fix the offset. It's hard to prove as you've indicated. My experience with mines is they use connectors / quick connectors that fit in only one manner. Makes situations super easy to figure out, especially in low light.

@williamGSXR110 3 года назад

This is the ultimate teaser trailer! Not fair.

@ScannerDanner 3 года назад

We will never know the truth. It's not like I'm holding out on you 😉 I'll troubleshoot those other issues in the spring for you guys

@gerrymoeller 3 года назад

Well I noticed the oil pressure gauge not only doesn't work it wasn't reading 0 pressure either.. makes me think the gauge itself is not powering up.. I'm liking the theory about the jump pack. Most non mechanical people's first thought is "if it don't start, jump it"..

@imkwuzn 3 года назад

Hey Paul, I have an ‘01 Holiday Rambler Endeavor with the same Cummins ISC and Allison. Mine has an Intellitec system that controls which batteries are being charged by the alternator. I believe it monitors voltage directly from the battery banks and once the chassis batteries reach 13.5v, then and only then will it switch to charge the house bank. I mention this because if you did indeed have a surge or a short of some kind, it could easily have fried the Intellitec system as well as the TCM. Something to check if you have one on board. I also lean toward a 24v jumper box or a reverse polarity jumper. I’ve made that mistake once in a dark garage and fried the main fuse and several other random fuses on a late model Toyota Tundra. I had to check every fuse in both fuse boxes to finally fix all the weird issues. Best of luck and take care.

@ScannerDanner 3 года назад

Good info! Thank you.

@AndyEffertz 3 года назад

Rv shop did the same thing to my cousins Rv and his was cooked from them jump starting it! His module was mounted on top of the the engine

@josephwash109 3 года назад

That's a tantalum capacitor. The band and the beveled edge indicates the positive side of the unit (it also has the + sign). Tantalum capacitors cannot tolerate reverse current flow. The fact that the burn mark exists on the negative side of the capacitor shows that reverse current came in and burned it out. They must have hooked up a jump pack backwards. Datasheets show that those capacitors are designed to tolerate temporary voltage spikes, but not reverse current (KEMET electronic components as the manufacturer).

@HouseCallAutoRepair 3 года назад

That's why I initially thought it was a PIV, but then, it would have been black.

@D2O2 3 года назад

Would also be a good idea to check alternator ripple, those caps are not tolerant to ac ripple.

@HotRod-wv4vm 3 года назад

Class “A’s that’s what I wore in the army lol

@kyot72 3 года назад

A thought for the future is put master switches on both positive and negative sides make it dummy proof.

@droberts444 3 года назад

Paul, at 12:16 you see on the TCM data tag the TID 3. Make sure your old TCM also has the same TID number. I don’t remember all the details about it, I just remember it’s important.

@rickharper1497 3 года назад

Paul, I wouldn't be a nice person about this!!!!

@throttlebottle5906 3 года назад

too much isn't adding up, plus y2k+ bad capacitor plague. then coach batteries voltage low and alternator charge rate off? I'd be thinking more like many module/device failure due to aging and high humidity storage moisture ingress.(moisture ingress has killed capacitors from day one) there's multiple reasons low humidity is desired, especially in the salty rust belt, storage and any areas that deal with wide temperature swings (poorly insulated and rapidly heated after cooling)

@hartsfire5706 3 года назад

wondering if some one got a wrench or jump clip shorted the a ground and spiked the hole system?

@aaronsargeant7810 3 года назад

Paul... Nice name! 😉

@lustfulvengance 3 года назад

The capacitor that blew up looks like a filter capacitor, that would definitely happen due to reversed polarity or a voltage spike from say jump starting or a ground that's not properly connected or intermittently connected!

@throttlebottle5906 3 года назад

haven't seen that far yet, but vintage 2001? that would fall under part of the massive bad capacitors runs that got put in everything circa then ;) electrolytic caps were not the only ones that failed, many type did, still do and have for years (no excuse for it) bad pocket padding occurring, I wont point fingers at either political party, because BOTH are equally responsible and stupendously dumb selling everything out

@zochpeter 3 года назад

@@throttlebottle5906 jump starting it with sparking on terminals, that is my bet. with or without ground connected.

@ryanscott217 3 года назад

I've seen a lot of failures on the allision 1000 series TCMs, dont really deal to much with the 3000/4000 series. I was in a truck when one died, went into reverse, backed up, went to drive and it slammed into gear and would not shift. TCM dead. Allision wiring diagrams do suck, and then the truck builder puts stuff anywhere they please and change some wires. I'm with you on they didn't get the all the grounds on, or was loose and ground was floating. I would tape them small wires to the large cable to they are there when the cable gets dropped on.

@6speeddakota 3 года назад

I notice you have a battery disconnect switch on the side, I'm assuming it's for the coach batteries. Would they allow you to use a similar one for the engine batteries instead of disconnecting and reconnecting the cables each time?

@ScannerDanner 3 года назад

I have one for both the house and powertrain systems, but they won't let us use those, batteries must be disconnected. Also my powertrain one is frozen lol

@toomanytools7865 3 года назад

For what it's worth, I have see this issue with Allison TCMs often. Not sure if it was because it got jumped started incorrectly or just poor quality contorl but whatever the reason I myself have done more than a few replacements of this TCM.

@Dank1945 3 года назад

Hi Paul, I have my class A in my back yard, on blocks for the winter. If you have no room, Dont leave it where other people will put their hands on it, I am paranoid about anyone touching mine. Dan in st. Catharines, ont.

@vincentjones8849 3 года назад

I Had a car there years ago Found a Nice Scratch on the fender. Asked about it. they said they are not Responsible For It. told me i dont have to use their place anymore, we have a waiting list. pretty sure it was a worker looking to see what motor was in it.

@ScannerDanner 3 года назад

they do have a waiting list and they don't really care from what it seems

@davidwaskiewicz3289 3 года назад

Tie the grounds together 👍🏻

@TheCrazy243 3 года назад

That’s crazy! 😨

@SM-- 3 года назад

Tantalums tend to blow on their own just from many years of use, but they are especially sensitive to reverse polarity, over voltage and transients. So whether it was the mine workers' fault or not could honestly go either way. The oil gauge and charging fault you had sound a little too perfect to be just a coincidence though. My money is on them using either a 24V booster or reversing the leads when boosting.

@CHIBA280CRV 3 года назад

Wow I believe that’s exactly what happened to the TCM .. the way you reached into the harness for 2 of the grounds they probably never connected them... Why don’t you just connect the 3 grounds into one and put a visible tag maybe yellow to make it easier to keep these issue from happening again.. it’s pretty dark down there and they do thinks in a rush and screw up... there not going to tell you they did something wrong.. you lead the guy into telling you what you wanted to hear , so he’s going to give you the correct answer.. thanks looking forward to the spring... oh yeah I know the feeling cause I’m the guy years back when you were first selling your online book and I felt the same way you do , about taking you to small claims court for me not being able to print pages from the manual after you said we were allow to , so I had to purchase your book ! Lol... but your to good of a teacher and it wasn’t much money Lol.. just was upset cause like you , i felt lied to...Still love your videos and find them to be educational and blast ...😂🤣 man that was creepy !

@ninamcclure2193 3 года назад

I am curious if they have any ongoing complaints against the company for this type of stuff. Might want to check if you haven't already. Bought your book and love it. Thank you Paul. SD.

@dmorley100 3 года назад

@1:37 not always. I can actually understand why they make you disconnect both battery cables as a condition of letting you park the RV. Had a Chevy truck around a year ago that had a battery drain on it that I was able to solve VERY quickly thanks to information that the customer provided. They said that they’d been having the problem out of the truck for a while, and they said that they had to disconnect the positive battery cable in order for the battery to stay charged. If they unhooked just the negative battery cable, the battery would go dead in less than 6 hours, just like if you left the battery fully connected, but unhooking just the positive battery cable would keep the battery charged. Well, when I got it in the shop, I looked at the positive battery cable, and it was one of those old side post batteries that had 2 positive battery cables stacked on top, or in the case of a side post battery, beside each other. Seeing this, I removed the positive battery “cable” and split the 2 positive cables apart. I found some green crud built up between the two of them, so I cleaned it off the cables, pulled the truck outside, and let it sit for over 8 hours. The truck cranked and ran the first time I tried it after cleaning the cables. I’d never seen anything like that happen before, and odds are I’ll never see it again. The only thing I can figure might’ve happened in that situation is that the 2 positive battery cables, because they had green crud built up between them, had enough charge dis-similarity between them that it was able to make a complete circuit through just the positive battery cable connection. I suspect that the RV parking space people have seen something similar happen before as well, and they put this policy in place as a countermeasure.

@gearheadautomotivel.l.c.5476 3 года назад

Wait a minute Paul. Are you sure they weren't just back flushing the electrons in your batteries to make them last longer? They say anything that doesn't survive that needed to be replaced anyway. 😂🤣😂 In all seriousness I'm sorry that happened to you brother. Definitely agree something about the situation doesn't add up. I wonder if you could follow the traces on the board from the burnt component to the TCM connector pins? Perhaps it would help piece the story together? Look forward to seeing more about it. Hope you and yours are well, thanks for all you do!

@MitchMartinEngineer 3 года назад

@ScannerDanner, That yellow blown component is a tantalum capacitor. They are notorious for shorting out.

@ScannerDanner 3 года назад

Good info thanks! What leads me to believe it wasn't just a cap blowing out is the other issues I now have too

@chrisland169 3 года назад

when batterys are low the charging system peak high and those capacitors doesn't like that they are knows to fails , and you have a clue with the oil pressure gage and your charging system for the coach battery staying in the 12.3 zone , anyway you will find the problem in spring ,i have no doubt about it Paul !

@ScannerDanner 3 года назад

Batteries where not low, it was only there a month with the batteries disconnected. All good thoughts though my friend. The 12.3 I mentioned was after running it for 20 minutes with all the lights on inside. Probably at least 15 amps of current.

@john7017 3 года назад

In the future, will they accept a battery disconnect switch? This could eliminate physical disconnecting of the battery terminals, eliminating a future screw up. We my never know what happened exactly. I a good note, the bus is drive-able now. Looking forward to the spring follow up video. Thanks for sharing.

@thegreatjellydoughnu 3 года назад

My first thought was a non safety jump pack was hooked up backwards.

@halburdick3357 3 года назад

Paul could those 3 wire grounds be moved to motor or chassis ground to prevent it from happening again?

@woffordsoverlandjourneys8618 3 года назад

Hey man I messaged you last night about my van not starting 95 Astro,it's because of your earlier video with a 95 Astro and fuel pump related issues that I now know where the fuel pump switch is under the hood and where the grounds go on the driver's side!! You are very good at what you do,!! Anyway I discovered that my van is not getting any power going to the alternator in order to charge my battery to stay running I'm curious if there's anything that I can test for in these locations to leave me in the right direction maybe an ignition switch or a bad wire although I've checked for wires and everything seems intact

@Bushougoma 3 года назад

3:30 that is a tantalum capacitor when they fail they usually fail short circuit. They can fail from old age but based on the symptoms a transient voltage (voltage spike) likely caused that cap to fail. You can tell it's a tantalum because of it's yellowish case and polarity marking. The positive side is marked where it's common on electrolytic caps to mark the negative side. An electrolytic capacitors maximum rated voltage can be exceeded brief for period of time without issue a tantalum can immediately fail if it's max rated voltage is exceeded even for an instant (like a voltage spike). They were in a hurry didn't fully tighten the nut on the terminal and repetitive arcing did the rest.