Тёмный

Electro Viscous Fan - P1482 Cooling Fan Speed Sensor Circuit 

ScannerDanner
Подписаться 432 тыс.
Просмотров 102 тыс.
50% 1

How to troubleshoot an electronic clutch fan circuit on an Olds Bravada or Chevy Blazer with a 4.2L engine. This clutch fan has 5 wires. (2) output control (3) speed sensor input (hall effect design)
Symptoms
check engine light (P1482 Cooling Fan Speed Sensor Circuit)
noisy fan
Fix
replace blown fuse for the electro viscous fan
Tests shown
how to test the computers output control of the fan circuit
how to test the fan speed sensor circuit
how to identify power and ground side switching
how to determine signal circuit design (pull-up or pull-down)
Tools used
Bi-Directional Scan Tool Autel MaxiSYS MS908 Diagnostic System with Wireless VCI
www.aeswave.com...
Lab Scope PicoScope 4425 4 Channel Standard Diagnostic Kit
www.aeswave.com...
Playlist
HVAC and Cooling systems troubleshooting
• A/C and Cooling System...
Related videos
GM MAF sensor circuit tests (a free ScannerDanner Premium video)
• GM MAF sensor circuit ...
Nissan-Infinity no start, no spark (hall effect crank sensor test)
• Nissan-Infinity no sta...
Chapter 2 (Switch Inputs) classroom lecture - an SD Premium preview
• Chapter 2 (Switch Inpu...
How to test a computer controlled solenoid - power/ground side identification
• How to test a computer...
2014 Subaru WRX O2 Heater Test (P0037, P0141)
• 2014 Subaru WRX O2 Hea...
For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available at www.scannerdanner.com as an eBook or paper book.
Want even more diagnostic training? Whether you are a DIY trying to fix your own car, someone looking to become an auto technician, or a current auto technician that wants to get more into diagnostics, subscribe to ScannerDanner Premium www.scannerdan... There is a 14 day free trial.
On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. What is so special about these classroom case studies? I pull live problem vehicles directly into my classroom and we troubleshoot them in real time, using and applying the theory and testing procedures we learn during the classroom lectures. There is no better on-line training of how to troubleshoot automotive electrical and electronics systems anywhere!
Disclaimer:
Due to factors beyond the control of ScannerDanner LLC, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. ScannerDanner LLC assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. ScannerDanner LLC recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of ScannerDanner LLC, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not ScannerDanner LLC.

Опубликовано:

 

14 окт 2024

Поделиться:

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист
Посмотреть позже
Комментарии : 124   
@wyattoneable
@wyattoneable 8 лет назад
An easy fix but some great troubleshooting steps and circuit design. Thanks again Paul.
@bindig1
@bindig1 6 лет назад
Good thorough diagnosis. Here's what happened to me. I did have a bad fan clutch, roaring all the time and I could stop it by hand. I replaced the clutch (not really a tough job at all with the right tool) and was not really happy with the performance. Sounded better but would get slight overheating with AC on. Not terrible, like 220, 230, but concerning. After watching your video, I unplugged the fan connector and two of the pins were pushed down so far I was getting no connection. Happened when I replaced the clutch and pushed the connector together. Something so simple. Now working great. No roar, no overheating with AC on
@IsshmanGarcia
@IsshmanGarcia 3 года назад
Good stuff. For any new peoplw watching: Actual fan RPM vs. Desired RPM is NOT always the same- there can be up to an 800 RPM difference. Per GM Service info.
@IsshmanGarcia
@IsshmanGarcia 5 лет назад
Without fail, anytime I have an issue- all I do is type in scanner danner--->"my issue" then enter = A high quality video walking through the diagnosis and repair. Great Job SD!
@formula309
@formula309 4 года назад
Saved my butt today brother. Know it’s an older video but I still wanted to pay it forward
@kirkabrahamson1148
@kirkabrahamson1148 8 лет назад
More great info Paul. The more of this stuff I watch the easier I have found it to break things down to basics and not worry too much about what the customer issue is but more about the circuit design. Works for my brain lol.
@andrewwmacfadyen6958
@andrewwmacfadyen6958 8 лет назад
Another great video, it shows unknown systems are nothing to fear just use basic principles to figure it out.
@LethalMercury
@LethalMercury 7 лет назад
In all my years of wrenching, and working at a parts store, I have never been able to find a clutch fan. All I have been able to find is a fan clutch;)
@curryridge
@curryridge 6 лет назад
OMGosh!!! What a great video!! I have a 2003 GMC Envoy and have the same situation!! New fan clutch and water pump replacement!! It has been about a year since I replaced the clutch and pump and two day sago I got a P1482 trouble code. I will replace the fuse!! Thanks!!!
@thedreadedgman
@thedreadedgman 8 лет назад
Snap-On's description of the trouble code is a bit misleading here, a quick web search for that code revealed it's usually described as a "control circuit" or "relay circuit" fault (which matches up with the burned fuse). However as the Snap-On tool calls it a "Fan *Speed Sensor* Circuit" of course the direction is to look at the speed of the fan rather then the control side circuit integrity... Also there is a large variation allowed in the desired vs actual fan speed - up to 1000 RPM (before setting code P0483)
@juliogil2787
@juliogil2787 3 года назад
Maybe that's the problem that my has...thanks for your hard work. I appreciate it very much!
@richtomeyer3081
@richtomeyer3081 Месяц назад
I fricken love this guy...
@juliogil2787
@juliogil2787 3 года назад
Dam bro...Like it very much your troubleshooting. you really know your thing !
@JohnDoe-uq3mx
@JohnDoe-uq3mx 8 лет назад
This one seems better than the old thermostat control. I would bet without a doubt that it is for both better gas mileage and cooling.
@eduardoriosrosas6557
@eduardoriosrosas6557 8 лет назад
Am glad to se all this videos Paul Great as always, and am still studying slow but I keep going still on chapter 1 though lol
@whitetiger8652
@whitetiger8652 8 лет назад
Great diagnosis Paul.
@johnhnetkovsky8917
@johnhnetkovsky8917 8 лет назад
The cooling fan relay sends a pulse width modulation (PWM) signal of 12-14 volts to the cooling fan clutch through the cooling fan clutch supply voltage circuit. The powertrain control module (PCM) uses this PWM signal in order to control the speed of the cooling fan clutch. The signal controls the position of the oil control valve inside the cooling fan clutch. If the cooling fan RPM is different than the PCM is expecting, DTC P0483 will set. The actual cooling fan RPM vs the desired cooling fan RPM is not always exactly the same. There can be up to an 800 RPM difference. If the PCM detects that the cooling fan speed is over 6,800 RPM then DTC P0493 will set
@thedreadedgman
@thedreadedgman 8 лет назад
P0483; which can only set at a steady RPM below 3200 not varying more then 250 RPM for 5 seconds, with commanded fan speed greater then 0% - (Also some sources mention a max 1000 RPM variation and 0 - 12v PWM square wave - as seen in the video)
@spelunkerd
@spelunkerd 6 лет назад
Perhaps there is a temp related lockup that mechanically overrides your electrical control when the fan is hot. When cool the fan would respond normally to electrical control. After warmup, when the system is hot, mechanical control overrides all. It would be interesting to see this tested on a cold day with engine cold, which is the main time you want to completely shut down that fan.
@ScannerDanner
@ScannerDanner 6 лет назад
These viscous fans are always very noisy on first start up. I don't know the internal hydraulics of this offhand but it is normal for them to react this way. Something about where the fluid pools on shut down.
@Dreccomel193
@Dreccomel193 6 лет назад
Thank you for taking the time to make this video, I have a few follow up questions. I was having a problem with the electronic clutch fan. No code but there was excessive noise from it. I replace it and once I did I got various codes from P1481 thru P1484. I google it and your video came up, so I checked the ground, the 5v reference from the connector on the side as indicated on the video. To my surprise, the clutch works fine when disconnected. If I plug it back in I get excessive noise again, I just don't know where to go from here? replace the clutch again or just the harness that leads to the clutch?
@haywardsautomotive6156
@haywardsautomotive6156 8 лет назад
Nice case study Paul!
@sugarwalker89
@sugarwalker89 Год назад
Great job young man!!!!
@4stringbazooka
@4stringbazooka 8 лет назад
Great video man! Thanks for the share. How's the Verus Edge working out for mobile diagnostics, any dead battery issues yet? Been thinking about getting one. But, I worry the battery would be an issue. Cause as it stands my Modis Ultra never dies and if it gets close I just plug it in to the DLC.
@tankeryankercruz7795
@tankeryankercruz7795 6 месяцев назад
I bought your digital book. Good info Tku
@nightflyr1
@nightflyr1 8 лет назад
Please correct me if I'm wrong here and I have never had to deal with a electronic clutch control fan. But the basic operation I was taught was: At idle / low engine RPM (and vehicle speed) the clutch fan should operate at or close to maximum to get more air movement and as you increase RPM / vehicle speed, the fan slows down. The desired fan speed (I assume computer controlled) @ idle is shown @ 304 and does not change. I would think the commanded fan speed would be higher at idle and lower itself as engine RPM increases. Possibly other factors (sensors) might cause operational changes due to outside temperature, but on this warm engine... It appears to me the fan/clutch/computer command is(are) operating in reverse as they should be. In my Nissan I have a non electronic clutch fan. At start up and for the first 15 - 20 seconds the the fan spins at the same (high) RPM as the engine, then spools down. Quite noticeable, that the clutch is locked for the first few seconds then it begins to function properly. high airflow at idle and lower airflow when revved up. I've since found this to be SOP for the 3.3L Nissan, 3 others on the block do and sound the exact same way.
@jasonbrown467
@jasonbrown467 6 лет назад
do not count on my info to be correct, but i noticed that too. it seemed as if being at a higher rpm for this vehicle triggered some sort of engagement above desired rpm of what the vehicle should have been doing, but remember he was over riding the defaults for the sake of testing the clutch's ability to engage and disengage but in short i suspect his clutch didnt have a problem engaging, but rather a problem disengaging, only after he replaced the blown fuse, remember before he placed the fuse it would not engage at all...i think. i would have liked to known the symptoms before the fan was replaced 2 years ago now,and perhaps a theory on why the fuse is blown
@Mcdyver1.
@Mcdyver1. 5 лет назад
You were by far the only person to go this far and at the end you dropped the ball..This is a problem plaguing MANY Trailblazer and Envoy. I have gone the full replacement of fan,belt,radiator, thermostat,water pump, due to a catastrophic belt failure. Also relays, connector and wires to the fan. To no avail! As of yet I have seen no resolve on any search page. [04 trailblazer p0526 code] I can clear it every time I drive but every time I restart the car the code comes back. The fan will also randomly stop functioning around 95 degrees outside and my car will overheat. Normally my temp gauge is strait up in the middle. So my question is: can you really solve this problem?
@jorge759382
@jorge759382 2 года назад
Try the coolant temperature sensor. A quick continuity check on both leads and then heating up the sensor with a torch should give you a signal. If that activates with the heat then it is working if not it's time to replace. Test the new unit before installing.
@electriciandallastx9182
@electriciandallastx9182 8 лет назад
Thanks for the tips you have provided here.
@shawnbauman5463
@shawnbauman5463 8 лет назад
Ahhh....shop shenanigans...."go ahead blow up your air bottle!" LOL
@rockridgetech
@rockridgetech 4 года назад
Question: I put an electric fan system in place of the fan clutch with the thermostat and temp probe. It works fantastic, however im still getting the P1481 error codes because there is no fan clutch plugged into the harness anymore. Please tell me that there is a way to trick or bypass the PCM from constantly throwing this now unnecessary error code???
@FortyTwoAnswerToEverything
@FortyTwoAnswerToEverything 6 лет назад
Good video. My problem with my 03 Envoy (5.3) is that the fan spins too SLOW, to a point that the AC won't cool (overheating condenser). Then it begins to spin up properly. This only happens when engine is already warm. I'm going to unhook the fan harness altogether to see if it actually will speed up the fan
@brucelee9941
@brucelee9941 3 года назад
Mine is thowing code and Ac is not blowing code either did you figure out how to fix?
@151bradhatt
@151bradhatt 2 года назад
What kind of scan tool do you have or need to do this with?
@45von
@45von 8 лет назад
Your brother changes one of these out and explains how it works in a video he posted back on Mar 2, 2014 titled: ENVOY COOLING FAN P0495
@MeticulousAutoMechanic
@MeticulousAutoMechanic 6 лет назад
see page 3 of this GM Techlink document for this fan clutch. If you unplug the connector, the fan will be disengaged(default)
@randallrigdon9379
@randallrigdon9379 3 года назад
Wish you would have said what wire you were testing. Black gray blue white.
@bundylovess
@bundylovess 8 лет назад
Sweet video big thumbs up mr danner
@tbombnuttwo
@tbombnuttwo 3 года назад
I have this crazy problem after changing out the water pump on my trailblazer. But when I pulled the fan and clutch I found bare wires going to the clutch. Fixed, installed new pump, threw it all back together. Now, I won’t climb over 160*, fan fuse was blown, replaced, I stopped the fan by hand while running, blew the fuse again, replaced and drove to work. Checked it out and was blown again. Oh man what did I do lol getting into fall 50/60 degree days and the heat works.... just not well. Thinking bad Tstat and now clutch. All was fine (ac/ heat/ coolant temp) before the water pump failed. Any ideas?
@bitchenbob5810
@bitchenbob5810 4 года назад
Hello thanks my envoy is running at about 212 degrees and the fan is rpm is only 500. Still working on it. Will look at your information closer. Sunday today, and beer time
@feeneysmechanical6215
@feeneysmechanical6215 8 лет назад
One is for the daytime running lights and one is for the fan.
@jeffriedstra
@jeffriedstra 8 лет назад
These "t-pins" you use, are those specific automotive things, or just stuff you get at staples?
@cojones8518
@cojones8518 8 лет назад
You can find them at Wal-mart in the fabrics and quilting section. The nice, old lady at my local Wal-mart was quite amused to see a big, beardy guy in oily clothes in her section asking where to find T-Pins. Her: "Oh, are you or your wife making a quilt?" Me: "No, I'm fixing a car." Her: o_o Me: "No, really. You use them for electrical connections." Her: "Um, Oookay?"
@moshe2002
@moshe2002 8 лет назад
great video that i can learn from thank you
@ozzstars_cars
@ozzstars_cars 8 лет назад
I put an aftermarket fan clutch in my '97 F150 (non eletronic). The thing roars like crazy when its cold, fully locked. Takes several minutes until the fluid is released and the fan RPM comes down like it should and becomes quiet. Annoying but it was almost a third of the price of the OEM. I'm okay with it but the replacement fan just doesnt work like it should at cold idle. Moral of the story is Aftermarket Crap!
@HsCSpanky
@HsCSpanky 8 лет назад
Many do this by design. I put a Hayden Severe Duty fan clutch on my 1991 Explorer and it roars for about 1/4 mile and quiets down. If you look on their website, they specifically say that's how they're supposed to behave. I'm guessing so you know it's working or operational rather than finding out too late on the side of the road in a puddle of coolant.
@ozzstars_cars
@ozzstars_cars 8 лет назад
yeah i hear ya Nate. Personally I think its a crock of bs because for whatever reason to get it right the engineering would be to costly. It's all about making a dollar the easiest way possible these days.
@HsCSpanky
@HsCSpanky 8 лет назад
I don't think so. Why would they purposefully make a product noisier when they have a choice to quiet it down. Consumers these days are incredibly picky and many people would want to return the part or go back to the mechanic to fix it. Here's a quote from Hayden's website: "A thermal fan clutch is engaged on a cold startup because the fluid drains into the working area when the engine is shut off. The fan clutch will slow down shortly after startup as a result of a pumping action produced by a difference in speed between the shaft and the body of the clutch."
@ozzstars_cars
@ozzstars_cars 8 лет назад
Nate Rowe All i can tell you in my case is the OEM fan clutch operates pretty smooth on startup and doesnt sound like the aftermarket clutch simulating a Boeing 727 taking off. Aftermarket and rebuilt parts in the past 10 years have gone to shit, mostly Chinese junk...lets agree to agree? Some of this crap is defective right out of the box. Its a big joke
@HsCSpanky
@HsCSpanky 8 лет назад
+Ozzstar I do agree, just not in this case :) I think one of two things happened in your case. Either your old clutch lost its fluid and didn't behave properly on a cold startup or ford spent the extra time to make one super quiet so they can say to the dumb consumer that their truck is quieter. Car manufacturers do all manner of silly things to mask or remove noises and vibrations that are actually normal and healthy. All because the consumer wants a quieter vehicle. I firmly believe that your new fan clutch is working properly as is mine. I'm sure the Hayden engineers agree. It's tough these days to avoid cheap Chinese aftermarket or companies that used to be good but got gobbled up by the big conglomerates. It's a shame really.
@noahbell6893
@noahbell6893 6 лет назад
I changed water pump and fan clutch at the same time. The old fan clutch was fine but i went ahead and replaced it. Now my fan runs fast only when im driving. Runs fast in 1st gear then gets quiet once the car shifts into 2nd gear and its quiet from then on unless i stop at a light and start driving again.
@creeperchaos9584
@creeperchaos9584 4 года назад
I have the same problem with my 2002gmc envoy, I changed the fan clutch, and the check engine light still comes on but I checked the fuse that is supposed to be a 10amp and the previous owner had put in a 15amp fuse and it is blown. So now I have to change the fuse and hopefully it will at least clear the check engine light
@ScannerDanner
@ScannerDanner 4 года назад
It should, change the fuse to the correct rating and then clear the codes, then go from there
@creeperchaos9584
@creeperchaos9584 4 года назад
ScannerDanner it worked finally the light for my fan went off, now I just have to work on my ignition coils, I’ve replaced two and it keeps showing a “misfire” on multiple plugs it’s driving me nuts
@maykevin5
@maykevin5 8 лет назад
overly complicated. GM should have just put a electric fan and been done with it for the price of the all that junk.
@r.joseph8911
@r.joseph8911 4 года назад
Yeah this truck is a nightmare. I just bought mine May 1st. I ALREADY want to sell it!
@darrenpea2498
@darrenpea2498 5 лет назад
Thanks for the video appreciate it!
@boulanouarmnawar4003
@boulanouarmnawar4003 8 лет назад
what is the name of your scan tool? thank you.
@sanrafaellife0
@sanrafaellife0 4 года назад
what software scanner used in this video.
@Cav19dmike
@Cav19dmike 8 лет назад
darn this was getting close to my problem only that my fuse wasn't blown...... i was at first getting a coolant temp sensor code, swapped that along with the thermostat. after i plugged everything together and turned the car on, the fan would just not turn off... i looked at the wires and everything seem fine. The problem that i am having now is that its intermittent
@leebarnes655
@leebarnes655 8 лет назад
Aftermarket grease box gots too much goo in it. Where's my dremel? And a lead shot fishing weight to fix the hole. Control is likely to be wire wrapped heater on the standard bi-metalic valve? I'm just guessing.
@curryridge
@curryridge 6 лет назад
Great video!! I have the same problem with my 03 GMC Envoy SLE. Had the fan clutch replaced last winter supposedly with the NEW and improved version?? My Envoy sat most of the spring and summer. This winter started driving it about 150 miles and got the P1482 code. Replaced the broken 10 AMP fuse and the code disappeared. Code came back on and replaced with 15 AMP fuse and code went away. Code came back on and that is where I am right now?? I wish you were closer, I'd take my GMC to you!! Any suggestions.
@ScannerDanner
@ScannerDanner 6 лет назад
Probably need to replace the fan clutch again and you never want to out a larger fuse in as a fix. You risk a fire when you do. Hope that helps.
@tankeryankercruz7795
@tankeryankercruz7795 6 месяцев назад
I’m diagnosing one right on a freight liner .
@aliokab6999
@aliokab6999 7 лет назад
Great job
@rrmech11
@rrmech11 8 лет назад
nice Paul
@nicknicu1787
@nicknicu1787 8 лет назад
Those aftermarket fans don't really work like the OEM. The Chinese ones will run full speed but some like that because it keeps the engine cool without realizing it's robbing power by running full speed.
@2ndbar
@2ndbar 6 лет назад
Mine wouldn't work even after replacing the fan and harness and the 10 amp fuse. But after clearing the error codes with a scanner the fan worked.
@IsshmanGarcia
@IsshmanGarcia 5 лет назад
FYI= Service info states that if the fan is engaged or engaged when you turn truck off, when you restart it it will automatically engage again and can take up to 2 minutes to disengage. SMH
@Tedybear315
@Tedybear315 8 лет назад
Ghess.... Did you get flight clearance to take off? LOL.. Wow...
@gregoryfairchild2460
@gregoryfairchild2460 4 года назад
Aren't those also temperature/rpm dependant...it always seemed they were locked up cold then quieter as it reach operating temp then locks up mire as it gets hotter.
@gregoryfairchild2460
@gregoryfairchild2460 4 года назад
More
@gregoryfairchild2460
@gregoryfairchild2460 4 года назад
300 seems low
@rusco321
@rusco321 8 лет назад
Won't it run too cold if the fan is always engaged? It's also robbing the engine of power?
@Adam-bw4lw
@Adam-bw4lw 8 лет назад
1.nope the engine termostat is keeping it constant temperature. 2 yes it is robing power around 3-10 hp.
@Adam-bw4lw
@Adam-bw4lw 8 лет назад
*robbing
@paquesepas6696
@paquesepas6696 5 лет назад
I have this exact same vehicle and all of a sudden when I turn my air conditioner on my engine temperature starts increasing to basically overheat so I turn the ac off and back to normal. Is my fan clutch bad?
@ScannerDanner
@ScannerDanner 5 лет назад
what happens when the AC is on at highway speeds? If everything is normal, then yes, I would focus on the fan, if it still starts to overheat, you need to look elsewhere
@paquesepas6696
@paquesepas6696 5 лет назад
@@ScannerDanner Ok thanks I will report back. Everything started about a week after I topped up my air conditioner from a slight evaporator leak I was having. Not sure if that can be related but my a.c. is cold but my engine temp all of a sudden goes up it wasn't in highway but I'll check on it.
@paquesepas6696
@paquesepas6696 5 лет назад
So I decided to look at the #20 fuse(good) as well swap the fan relay #45 with hdm relay #46. Took it for a drive ac full blast street and freeway no overheating. I really doubt the relay did anything maybe it's more intermittent problem which will point to what? I guess just keep an eye on it now.
@paquesepas6696
@paquesepas6696 5 лет назад
@@ScannerDanner Ok my truck finally gave me a code yesterday since I stopped using the a.c. so my truck wouldn't warm up. Code is the same as this video p1482 but my fuse is good and I will change the relay to a new one here soon. Do you think my fan clutch is out for sure and also took out my relay possibly? Thanks.
@scottouimet2865
@scottouimet2865 Год назад
I know its an old video. But maybe someone sees this an has an idea. 07 Mountaineer 4.0 Never overheated, had the ac leak fixed and refilled. Less than 5miles from the shop it started getting warmer till 15mins later it eventually overheated after the temp went up and down. Being 90°+ i was atleast able to make it to my work. It had coolant and oil. I am thinking the electro viscous fan clutch is bad. But im not getting a code or anything. Wires were melted but i hsd previously repsired that section but could that be why its perhaps causing overheating. Just not running hard enough. When u shut her off ut stays spinning for 10-20seconds and i know that would mean a regular viscous clutch would be bad.
@ScannerDanner
@ScannerDanner Год назад
Step 1 before you go any further is to do a chemical block test for a blown headgasket. Step 2 it could be a fan issue but if it is, it will ONLY overheat in traffic. With constant airflow from driving it, it will remain cool. Your AC system will be disabled by the ECM if it senses an overheating condition
@gregoryfairchild2460
@gregoryfairchild2460 4 года назад
Lol..loud..always was a big complaint with those years blazers and bravadas
@fatjack840
@fatjack840 3 года назад
Can I put double fans an take out my fan clutch I change my fan clutch every 6 months Y. .
@ScannerDanner
@ScannerDanner 3 года назад
Most likely. You'll just need to add a relay and maybe a temp sensor to trigger the relay
@fatjack840
@fatjack840 3 года назад
@@ScannerDanner do you have those sensors (number) an I can hit auto zone thanks
@ScannerDanner
@ScannerDanner 3 года назад
@@fatjack840 no my friend, this would all be aftermarket stuff that you'll have to do research on to see what will fit for you. If you need additional help, post this to my forum. IT is free to join and we can help you www.scannerdanner.com/forum/post-your-repair-questions-here.html
@JoshHighley
@JoshHighley 8 лет назад
that seems like a really bad location for the ECM, subjecting it to a lot of engine heat and vibration
@feeneysmechanical6215
@feeneysmechanical6215 8 лет назад
I am referring to the solid state relays.
@charlesjoseph8007
@charlesjoseph8007 8 лет назад
Dual Screen ; SCANNER VS SCOPE- Diagnostic Quick Tips / Snap On Training Solution.
@ScannerDanner
@ScannerDanner 8 лет назад
I know how to do it. It just needs to be easier and NOT have to go through the component test meter to do it.
@elvinsierra8771
@elvinsierra8771 2 года назад
My idle is up and down 2033 trailblazer when at a light or parked
@jpol3808
@jpol3808 5 лет назад
They forgot to read the fine print on the crumpled up paper in the bottom of the new fan clutch box, that said, Warning: This fan clutch assembly should not to be used with an electronically controlled fan cooling system! Please be advised that failure to follow this warning could result in severe injury to people or extreme damage to property. Lol. Change it for the correct one and make sure the actual speed is following the speed it's calling for. Then it's Repair finished.
@ScannerDanner
@ScannerDanner 5 лет назад
lol, this fan is sold as an assembly, complete with the speed sensor and wiring, it was NOT the wrong fan
@steventenney8797
@steventenney8797 8 лет назад
your brother has a video on one of these
@JOHNPHUFNAGEL
@JOHNPHUFNAGEL 8 лет назад
You have been telling snap on about the meter tab for years now. Yes it would be great if they did that but I dont think they care or they dont watch your videos
@carslover3509
@carslover3509 8 лет назад
to complex fan speed circuit ???
@andrewwmacfadyen6958
@andrewwmacfadyen6958 8 лет назад
Certainly doing things differently without a real reason, probably some power train engineer fresh out of university wanted to make his mark by doing it differently from the guy in the job before him. In reality its no less or more complex than some of the PCM controlled electric fan circuits out there, the only advantage I can see is it more likely to fail safe than a single electric fan. Back in the 1970's Chrysler France use a fan with an electric lock-up clutch but that was much simpler no electronics involved.
@carslover3509
@carslover3509 8 лет назад
Andrew W MacFadyen yeah friend that is im trying to say thanks
@johnmckamy6398
@johnmckamy6398 8 лет назад
wish you would of switched the relays just for grins
@mlb0611
@mlb0611 8 лет назад
junk Dorman fan, every Dorman fan I have put on these trucks has come back failed in less than a year, done at least 30 plus of these fans. FYI should drop to desired fan speed
@Adam-bw4lw
@Adam-bw4lw 8 лет назад
Reupload ??
@ScannerDanner
@ScannerDanner 8 лет назад
Yes, sorry about that. There was a playback issue at the beginning of the original.
@Adam-bw4lw
@Adam-bw4lw 8 лет назад
ScannerDanner​ no problem,thanks!!
@CharlesLease-ei1ee
@CharlesLease-ei1ee Год назад
And you know snap on is nothing but a joke rip off at 300% markup. You have to keep updates every 2 to 3 years because if not you go behind you’re looking at $10-$15,000 just for updates and the whole thing is all that data that Snap- charges you for all the aftermarket Mac Matco XL I’ll tell is the same data that’s in that scanner that you’re being charge for and they give you those function testing that Snapon gives you the same identical wants same data for free and you don’t pay 45, 5500 for a scanner and you get all the connectors they give you With the price of the scanner but snap on you have to buy that separately but guys in the automotive like the color green the design I understand that I buy snap on but when it comes to their test equipment it’s not worth it I’ve done it you get the same thing for a cheaper price and better equipment better warranty the data they only warranty that for one year the other companies out there some go to years but basically it’s the same thing one year so when you see your snap on rap if you want to easy bring a bottle of Vaseline
@ScannerDanner
@ScannerDanner Год назад
You seem like an angry and bitter person
@neslihan1858
@neslihan1858 8 месяцев назад
...
@yrulooknatme
@yrulooknatme 8 лет назад
swap the relays
@andrewwmacfadyen6958
@andrewwmacfadyen6958 8 лет назад
Why ? the relay is working the control duty cycle signal is working at the fan connector.
@yrulooknatme
@yrulooknatme 8 лет назад
Andrew W MacFadyen cuz it easy, cheep and it may tell you something. there are two right next just swap them out. 5 seconds. probably somethin in the clutch but that's how I roll...
@ScannerDanner
@ScannerDanner 8 лет назад
No need to. Swapping out relays would have not helped in this case. And if it did work what kind of how to video would that be anyway? Anyone could do that. The question is would you know how to actually test the circuit when snapping relays doesn't work? You do now.
@yrulooknatme
@yrulooknatme 8 лет назад
ScannerDanner I know... And I appreciate your instruction.
@ScannerDanner
@ScannerDanner 8 лет назад
Thanks man I appreciate your reply
@kanders56
@kanders56 4 года назад
Soooo....you didn't fix shit....?
@jjbeatz5025
@jjbeatz5025 5 лет назад
Make it short and quick.over half an hour is way to much
@CharlesLease-ei1ee
@CharlesLease-ei1ee Год назад
This is what you call diagnosing the vehicle is what we do for a living that’s why it takes so long. You can’t just swap out parts because there’s a wiring issue you’re not watching somebody from AutoZone or advance auto parts.
@eduardoriosrosas6557
@eduardoriosrosas6557 8 лет назад
Am glad to se all this videos Paul Great as always, and am still studying slow but I keep going still on chapter 1 though lol
Далее
How to test for a bad head gasket (chemical test)
8:51
Chevy Trailblazer: Electric Fan Clutch Failure
15:23
Просмотров 112 тыс.
How Does a Viscous Fan Clutch Work?
3:33
Просмотров 970 тыс.
Common Chevrolet TrailBlazer GMC Envoy Problems
19:47
Voltage Drop Testing with a Test Light? [Part 1]
28:00
Before You Load The Parts Cannon....
14:02
Просмотров 164 тыс.