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Will not idle when air conditioner is on - 2004 GMC Envoy

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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 23, 2010

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Posted on Jan 02, 2017

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2 Answers

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

My envoy idles up and down when i turn my defroster is on


When you place your controls on defrost it turns your air conditioner on - depending what the heat level is set on the air conditioner will cycle on and off to regulate temp. Anytime the A/C runs the idle sensor will bring the idle up

Mar 25, 2013 | 2003 GMC Envoy

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Air conditioner kills the engine when idling


I had the same problem, turns out all you need is a $4-$10 engine degreaser and some time on your hands... I found the following video very helpful>> http://www.youtube.com/watch?v=VdvgsaDmkac

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My nissan engine went to hot after idling in traffic abt 30 minutes with air conditioner on. We put in coolant and let idle for about 10 minutes and it was okay. Then we went to a department store and it...


Hi. Are you runing out of water in the radiator or at the reserve? if this happens there might be leak on the radiator or to the hoses. If there is no leak, then this could be the cooling system of the car that is having a problem. Try to check first the water pump.

Aug 12, 2010 | 2004 Nissan XTerra

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Air Conditioner not cooling at idle


it is low on charge due to a leak most likely, have the system pressures checked.

May 25, 2010 | 2005 Ford F 350 Super Duty

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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

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Mitsubishi Montero Sport 2002 Idle problem


the engine compensates for the load try turning up the idle screw also check the ignition system you might just need new wires and or cap rotor or your coil is bad also plugs

May 31, 2009 | 2002 Mitsubishi Montero Sport

1 Answer

Air conditioner


Is the fan running with A/C on at idle? If yes try blowing out the radiator and condenser with compressed air.

Apr 08, 2009 | 1998 Saturn SL

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Nissan Quest 2001 turns off when idle


Idle air control at base of throttle body. Passages could be plugged or idle hard stop needs adjusting.

Air Intake System Sensors Air intake system sensors include a heated resistor-type mass air flow (MAF) sensor and throttle position (TP) sensor; both supply data to the powertrain control module (PCM). The PCM also monitors engine speed.
Air Intake System Control Devices The idle air control (IAC) solenoid regulates idle speed by adjusting the amount of air allowed into the intake manifold. Adjustment is made by varying the duty cycle output by the powertrain control module (PCM). The PCM will increase the duty cycle for added mechanical or electrical loads. The IAC solenoid is combined with the fast idle control (FIC) solenoid which is turned on when the air conditioner is engaged to help compensate for the additional load. The IAC valve must be replaced as an assembly with the FIC solenoid.
Fast Idle Control (FIC) Solenoid The fast idle control (FIC) solenoid (Figure 1) compensates for idle speed change caused by the operation of the air conditioner compressor. The FIC solenoid is controlled by the FIC relay. The FIC relay is energized when the air conditioner clutch is energized and the relay allows the FIC solenoid to turn on and let an additional volume of air into the intake manifold.
Figure 1: Fast Idle Control (FIC) Solenoid
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Throttle Body (TB) The throttle body (TB) controls the amount of air that flows into the engine through a single butterfly valve. The single butterfly valve opening is determined by the accelerator pedal. The TB is cast with an air bypass channel and houses several emission-related components for the powertrain control module (PCM).
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Throttle Position Sensor (TP Sensor) The throttle position (TP) sensor responds to the accelerator pedal movement. The TP sensor is a potentiometer that transforms the throttle plate opening angle into output voltage and sends the voltage signal to the powertrain control module (PCM). In addition, the sensor detects the opening and closing speed of the throttle plate and sends the voltage signal to the PCM. Also, the TP sensor is used to determine the air intake when the mass air flow (MAF) sensor fails. This mode of operation is called Fail Safe.
The TP sensor integrates the idle (IDL) switch within the housing. The IDL switch detects when the throttle plate is closed and an idle condition occurs. The PCM is supplied with this input signal.

IDLE SPEED

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Apr 03, 2009 | 2001 Nissan Quest

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

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