Question about 2004 Chevrolet TrailBlazer

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Car dies when idle with air conditioner running Speedometer not working

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  • Chevrolet Master
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The throttle body needs to be cleaned, grime in this area prevents the throttle plate from closing completely and allowing air to enter, making the air/fuel mixture lean.

Posted on Oct 10, 2010

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My 2001 Mitsubishi eclipse wants to die when I turn on my air conditioner or defrost.


check the automatic idle control valve. It might need to be cleaned.

May 10, 2017 | 2001 Mitsubishi Eclipse

1 Answer

Had car jumped, now it stalls when the air conditioner is turned on. alternator read ok. also changed battery but speedometer didn't work after jumpstart, it works with the new battery,but still


There is an idle speed control motor on the side of the car's throttle body that is supposed to keep the idle stable even when additional loads like the AC are on. It's possible the motor may be damaged due to a voltage spike when you had it jumped. It's also possible the AC system may be pulling the engine speed down due to an internal problem with a faulty AC compressor.
Did the shop that checked the charging system check to make sure alternator was charging properly with the additional loads of the AC, headlights and blower motor on? It's very possible the system is overloading a weak alternator.

Apr 21, 2013 | 2005 Saturn VUE

1 Answer

Air conditioner makes car miss what could cause this


Engine stalling and rough run issue at low speeds

This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve. Buy a can of throttle valve cleaner (do not use carburetor spray cleaner!) from NAPA or Carquest (made by CRC chemicals) and spray it into the air intake while the engine is running, use up about 1/2 the can, engine will try to stall hold the speed up, shut it down and let it soak for 30 minutes, restart and blow out the remaining fluid, shut it down and disconnect the negative battery cable for 5 Min's to reset the base idle control

Aug 08, 2012 | 2002 Dodge Caravan

1 Answer

Car cuts out when idoling


The idle system has gone bad in your car. Did anyone work on the AC? An overcharged ac also put so much load on the engine that it can make it stall when idling. The idle sytem is suppose to raise up the idle of the engine when there is a load such as a headlight or an ac system.

Jun 29, 2009 | 2002 Mitsubishi Galant

1 Answer

I have a Mistubishi eclipse GS 2.4 four cylinder the car idles extremely low and sometimes dies when i am sitting at stop lights out of gear or when i come to a stop and have it in nuetral. But when i turn...


your idle speed too low.take it to a dealer.they have to reset idle.it should be 600-800 rpms.when you turn on air conditioner.the computer steps up idling to keep engine from stalling .your curb idle too low.

Jun 22, 2009 | 2001 Mitsubishi Eclipse

2 Answers

My 2002 Ford Taurus will shutter and die when running the air conditioner and sitting idle at a stop sign or stop light. When I turn on the air conditioner the rpms will fluctuate up high above 2 and then...


the idle air control valve is responsible for engine idle.
this is a common failure on ford's. but I don't think yours is bad because it does idle high befor it dies.
you stated you had codes p0171 and p0174 these are lean codes for bank one and two, you said you found a vacuum leak and repaired it, the vacuum leak was mostly likely the cause of the lean codes, however the pcm has calibrated the fueling stategy for this lean mixture, what you need to do is erase the KAM "keep alive memory" this is done by unhooking the negative battery cable for 60 seconds, this is the only way to erase the KAM the $6000.00 machine I use wont even do it.

once the KAM is clean the computer will go into a relearn state and all operating values will be adjusted for the vehicles current condition, during this relearn session the vehicle may have some driveability issues (low or high idle, stalling, poor fuel economy) the relearn should complete within 10 minutes of idling and then 10 minutes of driving.

good luck and keep me updated

wesleyschacht@hotmail.com

Jun 14, 2009 | 2002 Ford Taurus

1 Answer

Speedometer is not working, engine light & air bag light on, and


is the electricity reach the Air conditioner or not

Jun 09, 2009 | 1992 Ford Crown Victoria

1 Answer

Air Conditioner Still Does Not Work


well common things abt idleing is ECU....it will idle weird sometimes smioke *black* abit or choke up & die...after replacing ECU should solve the problem to idleing & air conditioner

Nov 10, 2008 | 1993 Volkswagen Eurovan

1 Answer

Have a 1989 Honda Accord LX and my idle after warmed up, every time I come to a stop my car dies. I've changed plugs, set idle speed a number of times, it will run good for a few days and then it's right...


If you can keep the engine running with your foot on the gas at a stop it is likely to be the Idle control valve. Older Hondas' have 2 valves. fast idle control (which is prone to cause fast, or surging idle due to vacuum leakage) and the Idle control that takes over from the cold idle control once warmed up. They are located at the throttle butterfly assembly.

Jul 26, 2008 | 1992 Honda Accord

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