I have a 2004 GMC Envoy XL, 4.3L with the extended wheel base. This is my problem; the vehicle runs great at times between 25 - 35 miles from a cold start. It then commence to lose power, acceleration, misfiring badly, engine will occasionally rev up the RPMs to about 6,000 for a few second without an increase in speed. The vehicle will intermittently stall upon DE-acceleration and in traffic. No codes at all. The fuel filter and fuel pump has been replaced, throttle body cleaned and computer cleared. This has been an ongoing situation for the past 6 months and the vehicle is totally useless to me. I truly would appreciate any pertinent information that you can provide... Thank you for listening and any advice you may have to provide.. Make: GMC Model: Envoy XL Year: 2004 Engine: 4.3 Already Tried: Changed fuel filter/pump, cleared computer and cleaned throttle body/replaced catalytic converter.
Check the oxygen sensors.
SOURCE: engine intermittently stumbles and stalls after taking off from stop
Take carborator cleaner. First take off the big hose on the front of your intake then press gas peddal to open up and then spray it inside this fixed my problem. Jerry
SOURCE: engine won't idle,
ok code 32 is the EGR (exhaust gas recirculation) this does not mean that the EGR valve is bad right off, check it and see if it is stuck in the open position, remove the vacuum line see if it moves, it should not. It is supposed to open at highway speed to recirculate exhaust gases and burn them, if the valve is stuck open the engine will not idle because it upsets the air mixture too much, if you remove the valve and see its open, then replace it.
SOURCE: 1987 Chevy Suburban 350 2wd not starting or running right
What size engine do you have in it? And, how many miles on it?? Well, I guess it really doesn't matter. At first thought it sounds like you are experienceing a fuel problem, and changing the throttlebody didn't solve your problem. I would start by looking and checking my fuel delivery system. The fact that you had to spray gas into the throttlebody tells me that fuel is not getting there. I would start with the least expensive thing to fix first. Check your gas filters. These are often , OFTEN, overlooked as a sorce of problems, and are rarely changed and often overlooked, and are the problem alot of the time. If that dosen't cure your problem check your fuel pump. Make sure it is delivering the proper pressure. I would bet your problem would be solved, but if it's not then next I would check the electrical components of your fuel system.
SOURCE: 92 gmc pickup,fuel injected throttle body.Engine
electronic dizzy modules do this when they get warm they cut out but can start up again within minutes !
very commen fault!
get it checked or borrow one
Cheers Rob
SOURCE: 1995 GMC Sierra 5.7 liter stalls and is hard
even though parts are new they also come with defects so it sounds as if when you turn the key you hear it working and other times not at all hmmm connections are tight ? could be faulty fuel pump or relay .
Subject:
Inoperative 4WD/AWD Lamps, Inoperative 4WD/AWD System, DTC C0550 Set, No Communication with TCCM (Reprogram Transfer Case Control Module)
Models:
2004 Buick Rainier
2002-2004 Chevrolet TrailBlazer, TrailBlazer EXT
2003-2004 Chevrolet Avalanche, Silverado, Suburban, Tahoe
2002-2004 GMC Envoy, Envoy XL
2003-2004 GMC Sierra, Yukon, Yukon XL
2004 GMC Envoy XUV
2002-2004 Oldsmobile Bravada
with Electronic Shift or Active Transfer Case (RPOs NP1, NP4 or NP8)850 views
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Hi E. F. Keel, Any CEL codes pop up? When you cleaned the throttle body, was the battery disconnected?
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