Question about 2002 GMC Envoy

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My Envoy stalls when A/C compressor comes on when A/C is turned off it idles fine can you help?

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  • 158 Answers

It sounds as if your compressor has locked up. When the compreessor is off the clutch disengages it, when it turns back on the cluch locks up because the compressor is locked up.

Posted on Jul 02, 2009

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Posted on Jan 02, 2017

Molson02536
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SOURCE: 2006 Envoy stalling when idels and won't stay running

Clean your Throttle body and pay attention to the Idle Air Control (IAC) valve passageway to try to clean the IAC. A dirty or faulty IAC will cause your engine to stall at idle, the job of the IAC is to open the passage way through the throttle body to regulate the amount of air to enter the engine to keep it from stalling when the Envoy is at idle.

Start with the simple and clean the throttle body and inspect any loose or damaged wire leads to the throttle body. Replace or repair any signs of damage.

Thank you for using Fixya and good luck.

Posted on Apr 13, 2010

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Your ElectronicEngineControl is supposed to increase the engine idle when you turn on the A/C. Try reving up the engine a little bit when you turn on the air. Does the air work OK? If so they your problem is with your idle control. If the car still dies, your problem is most likely your A/C compressor. Hope this helps out some. I am not that familiar with that vehicle so I will refrain from speaking about your fuel injection on that vehicle.

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1 Answer

2006 Envoy stalling when idels and won't stay running


Clean your Throttle body and pay attention to the Idle Air Control (IAC) valve passageway to try to clean the IAC. A dirty or faulty IAC will cause your engine to stall at idle, the job of the IAC is to open the passage way through the throttle body to regulate the amount of air to enter the engine to keep it from stalling when the Envoy is at idle.

Start with the simple and clean the throttle body and inspect any loose or damaged wire leads to the throttle body. Replace or repair any signs of damage.

Thank you for using Fixya and good luck.

Apr 10, 2010 | 2006 GMC Envoy Xl

1 Answer

A/c


two thing you need to check first when you but the a/c on check for the compressor if it is seized up,second the radiator fan should work with the a/c is on if not this will put load on the eng make it to stall or hesitate

Jul 21, 2009 | 2003 GMC Envoy Xl

1 Answer

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replace the ac system compressor dryer and orfice tube the ac compressor is locked up

Jul 06, 2009 | 2002 GMC Envoy

3 Answers

2004 Envoy xl stalls when making turns


this is caused by slow engine idle speed, do the procedure below.
Here is the common cause of surges, stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.



Jun 16, 2009 | 2004 GMC Envoy

1 Answer

GMC Envoy A/C Problem


I'd remove my idle air control (IAC) motor, and clean it & re-install to see if that helps. Use throttle body cleaner on pointed part of motor (pintle) and shaft , as well as spray into hole (port) it came out of . If it helps for a while, then start to do it again, I'd replace the idle Air control motor.

May 31, 2009 | 2003 GMC Envoy

1 Answer

02 envoy - "A/C on" indicator (front defrost) causes power loss.


the a/c will always turn on with defrost so the hot air wont crack a cold windshield.it sounds like altenator not keeping up. have it tested.if the engine realy boogs down with the a/c turned on the a/c compressor might be bad.(locking up)

Dec 29, 2008 | 2002 GMC Envoy

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