I have a 2002 GMC Envoy and I took it to the dealer because in the mornings it idles very rough and the traction control comes on and causes the reduce engine power light to come on, which of course won't allow my truck to accelerate out of first gear.
To "fix" this, we have to turn the truck off and on about 3 or 4 times until the traction control light no longer comes on.
The truck then drives normal the rest of the day.
The dealer says the only thing they could find is that the fan clutch is begin to act faulty (lower voltage output than normal) and that because it this, it is affecting the traction control and throttle position senson (which they say checks out fine on it's own).
Could a fan clutch going bad cause these types of problems?
Any ideas would be greatly appreciated since this is a very frustrating thing.
2007-09-27 02:31:09 · 8 answers · asked by Ariel G 1 in Cars & Transportation ➔ Maintenance & Repairs
I'm a little confused. The only clutch fans I've ever seen are all mechanical and not electrical, unless it's the AC compressor clutch, those are electrical. This whole story sounds like B.S. If the clutch fan is indeed electrical, what would that have to do with the ABS? This dealer sounds like he's just plain full of it, especially if you fix the problem by turning the truck on and off. I do agree that it might be a loose or bad ground wire somewhere. Moisture could be getting into a connection causing some electrical trouble until you get it hot enough to dry it out.
2007-09-27 02:55:38 · answer #1 · answered by Nc Jay 5 · 1⤊ 0⤋
These there's no such thing answers! They've been around for years! My 1990 Cummins Motorhome(17 years old) has an electric fan clutch! Big engines have electric over air fan clutches! There are hydraulic fans also! People willing to call others liars because they've never heard of something, how do they even learn a new thing when they all ready know all! I'd suggest unplugging the fan and starting it to see if the symptoms are gone while unplugged. GM has had a lot of trouble from those fans. That diagnosis doesn't make sense to me, but if they say that will cure your problem just make sure they stand behind their diagnosis and don't try to charge you if it isn't fixed.
2007-09-27 04:16:26 · answer #2 · answered by not 7 · 0⤊ 0⤋
It sounds as if the dealer is blowing smoke here. The thermostatic de-clutching fan is not electrically operated at all. Inside the finned fan hub it has silicone fluid that locks up the fan when it senses the heat of the fan blades blowing hot air on it.
I would suspect an electrical fault in the ignition relay box. A new crank trigger may be at fault. My dad chased this problem and it wound up being moisture in the fuel tank. two cans of dry gas solved the problem after the dealer had installed the crank trigger.
2007-09-27 02:46:27 · answer #3 · answered by Country Boy 7 · 0⤊ 0⤋
First of all you need to take it to another dealer. The fan clutch doesnt have wires to it. maybe you meant a/c clutch and NOOO that wont be the problem.I have seen faulty grounds do some STRANGE things. ... Thats a good one. this is a GUESS since the traction control seems to play an inportant part of this senario I would check the ground that grounds the traction control relay That ground probaly is common with your idle control also. maybe even replacing the traction control relay.
2007-09-27 02:48:25 · answer #4 · answered by Anonymous · 0⤊ 0⤋
When a fan clutch goes bad, it does one of two things:
1-It no longer engages causing the engine to over heat
2-Locks up which makes it spin too fast, sounds like a roar when engine speeds up.
It is not electrically controlled nor does it have any electrical sensors attached to it.
This is strictly for the cooling system, nothing to do with traction control.
The crankshaft sensor or a problem with your ignition coil/ignition control module could cause the problems you have described.
2007-09-27 03:11:34 · answer #5 · answered by Lab 7 · 0⤊ 0⤋
word the compressor on the same time as turing the a/c on. Does the snatch work together? if so, does the accumulator get chilly? it is the silver looking canister thingy usually on the ingredient of the hearth wall. that is placed after the condensor. If that is chilly, think approximately a blocker door that's not blockading the heater middle. If the snatch isn't enticing, you probable have low freon value and that's by using a leak someplace. you are able to value it and squirt soapy water around and seek for a leak. wish this helps.
2016-12-17 11:33:16 · answer #6 · answered by ? 4 · 0⤊ 0⤋
hard to believe..try another shop.whats ck engine lite say... how many miles? iv seen this kind of stuff caused by weak battery.. dirty bat connection,,, [ makes compuiter go nuts...] and if u have 80k or more miles just a regular tune up could cause it...[ cold damp wires cause missfire.and it runs better when the engine warms ..] never heard of electrict clutch fan.
2007-09-27 02:40:19 · answer #7 · answered by Anonymous · 0⤊ 0⤋
sounds like it
2007-09-27 02:37:08 · answer #8 · answered by infoman89032 6 · 0⤊ 0⤋