Question about 2004 GMC Envoy
Acts like it needs a tune-up when idleling but run ok at high speeds. also drinking more gas.
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Posted on Jan 02, 2017
2004 Envoy xuv 6 cyl when I turn on the A/C the truck stalls but as long as I keep my foot on the gas it will continue to run
Posted on Jun 28, 2010
SOURCE: envoy 2004 idle speed
your problem seems very easy :) hope this one work with your envoy. Just buy AC DELCO carburetor tune-up conditioner.
How you use it: engine running , AC off please
1. detached the big black airflow hose which is attached in the mannifold of the engine block.
2. ask your friend to step on the gas pedal and set the rpm steady in 2000 rpm only.
3. then spray vigorously in 8 seconds the inside circle opening of mannifold while your friend steady step on gas pedal with steady 2000 RPM only.
4. after you spray, let your freind continue on gas pedal with 2000 rpm for 15 more seconds.
5. attached back the airflow big black hose to the manifold and you are ready to roll with your AC on.
if this one doesnt work, please scan your envoy by scanner called TECH II. and find out.
Posted on Jul 18, 2008
Try the fuel filter. Sounds like the engine might be running rough due to weak fuel pressure. Its cheaper to replace, especially if it's still original from 04. Try running some injector cleaner through a couple of tanks of high octane gas.
Posted on Aug 06, 2008
SOURCE: rough idle and lopes
Those 4.3L's have a Central Port Fuel Injection system with one injector in the middle of the intake under the plenum, they are good for either the fuel pressure regulator or the plastic lines (that are inside the intake that feed the injector) leaking inside and flooding the intake with fuel. The best way to tell is to take the plenum off and thurn the key to prime the fuel pump and watch for leaks.
Posted on Nov 18, 2008
SOURCE: 2002 GMC Envoy is having
I ran into this concern with my 2002 and my wife ran into the almost identical problem with her 2003. this may sound silly,, but it was the clutch fan. Extreme loss of power from time to time came first. Then a roar of the what seemed like the engine when stopping. Actually cut off after it started to roar at highway speeds, and had absolutely no excelleration from time to time. Sometimes all of the symptoms completely went away. After taking mine to the dealer several times, finally they got it right and replaced the fan clutch. When my wifes 2003 SLt started doing the exact same thing as my 2002 had done, we both knew what the problem was, and the dealer did a quick fix. $600.00. Perhaps this should have been a recall feature, but never was. Everyone that I know that has an envoy, somewhere around the 72,000 and 103,000 mile mark has had this problem and have had to have the clutch fan replaced. It may sound like the vehicle is going to have to be junked,, but that is all it needs.
Posted on Dec 01, 2008
Tips for a great answer:
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Nissan Pathfinder Backfires? http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-backfires.html
---------How to adjust rpm? http://schematicsdiagram.blogspot.com/2011/12/how-to-adjust-rpm-on-2009-dodge-charger.html
------------Engine cuts out at 3000 RPM? http://schematicsdiagram.blogspot.com/2011/12/engine-cuts-out-at-3000-rpm.html
----------This will help.Thanks.
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