Question about Chevrolet 1500

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1994 chevy 1500 will not idle with air conditioning turned on

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  • Chevrolet Master
  • 3,218 Answers

Is the compressor seizing causing a strain on the motor and the engine to die? What is the base idle when the AC is not on?

Posted on Apr 12, 2015

  • dudley brearley
    dudley brearley Apr 12, 2015

    Rpm at 900 before I turn on ac

  • paulmacintyre
    paulmacintyre Apr 12, 2015

    Look at the AC compressor and see if the clutch is engaging and the pulley spins freely during operation

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 5 Answers

SOURCE: 1994 volvo 850 - non turbo

Try cleaning the throttle body and air idle control valve (IAC). The computer kicks the idle up when the a/c is on, if your throttle body or AIC valve is full of crud it will idle very low and feel rough.

Posted on Oct 11, 2008

  • 3600 Answers

SOURCE: Low engine idle speed when the air conditioning is running

the ac idle assist may be defective, if it's electric check the fuses if it's vachum operated check for vac. leaks. Also lube cables sometimes they stick Use wd-40 on the cables sparingly don't want dirt to stick to the cable.

Posted on May 30, 2009

roniecon
  • 6826 Answers

SOURCE: Upper air conditioning does not blow out just lower 97 chevy 1500

Hi,I will try to assist you if I can,You most likely have a directional vent door actuator motor not working,if I can help let me know,roniecon@gmail.com

Posted on Jul 20, 2009

  • 83 Answers

SOURCE: air conditioning silverado

The problem is in the heater box. To be more specific, the blend door. Check blend door operation and blend door motor. Located right side under dash. Remove blend door motor, with vehicle running, move switch from panel to defog and see if blend door motor moves.

Posted on Jul 26, 2009

  • 289 Answers

SOURCE: How to replace a heater core in a 1994 chevy 1500

As with all vehicles it seems the first part that they build around is the heater core. It is under the dash above the floor housed in a black plastic sealed box. Sealed with goop. Locate that box and start removing everything around it that is peventing taking the cover off. Of course disconnect the heater hoses under the hood a thefirewall.

Warning it is never as easy as it sounds.

Posted on Nov 29, 2009

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I have 1994 chevy 1500 it failed smog at idle . the hc ppm was100 max and i was putting out 848 what should i do


Diagnose a running rich condition. Too much gas, or too little air. Start with a clean air filter. Have your fuel injectors checked for leaking, stuck open, being out of whack. Make sure PCV system is working, along with the EGR. Is ignition system in good shape, good plugs, plug wires, and coil? If ignition is not up to par, you could have unburned gas getting through engine. Remember, it is running too rich. Good luck.

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1 Answer

Why does my 96isuzu hombre idle at 1500 when I turn the air conditioning on


1500 is a little high. If this is an automatic then the idle should be about 700 in neutral and up to 700 in drive. With the ac on it should not be over 1000. You should check the idle air speed motor.

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1 Answer

1994 chevy c 1500 shuts off everytime i stop


Possible TPS (Throttle Position Sensor) issue. The TPS controls idling speeds under all conditions. Although the truck may idle fine when cold, once warm, if you are encountering sputtering or stalling, the TPS could be the culprit. Other possibilities could be fouled spark plugs,bad wires, or a bad distributor cap.

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2004 chevy silverado z71 quad cab. will not cool need wiring diagram. I replaced the heater core and now the mix door will not open when air conditioning selected on. I have confirmed all wiring...


The door you are talking about has an actuator motor on the bottom of the blower box,look in the middle,under the dash,that will be the one,make sure it is plugged up,if not,it may need replacing.

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pick up a chilton book from chapters indago and check the diagrams they might be similar but i believe the wiring is a lot different '
it is likely you will need both manules

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air recir actuator motor shorted you can reach between blower motor and heater case and unplug a pain to replace

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check your vacuum lines they are weather cracked and leak vacuum air

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I have a 1994 chevy blazer 4.3 vortec it is displaying fault codes 32,35,45,82 can you tell me what thay mean?


32 is baro sensor or egr valve/35 isi.a.c idle air control/45 is rich exhaust probably faulty O2 sensor in exhaust pipe/82 isign fault or ecm module or transmission solenoid(open or short circuit condition)

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1991 chevy extended cab 1500 with a 350 it will idle down low the die then it will idle high run ok for a while always changing


Possible deposit buildup in the throttle body and specifically the IAC (idle air control chambers).This causes disturbance and your systems ability to control air/fuel mixtures at near idle conditions .Perform service, recomending removal of the IAC valve and cleaning with an O2 safe injection cleaner.3M makes a very good line of products including 3M"do it yourself" fuel system tune up pn#8963.Also verify proper EGR operation and no sticky valve or build up there.....good luck

Jul 23, 2009 | Chevrolet 1500 Cars & Trucks

1 Answer

1994 volvo 850 - non turbo


Try cleaning the throttle body and air idle control valve (IAC). The computer kicks the idle up when the a/c is on, if your throttle body or AIC valve is full of crud it will idle very low and feel rough.

Sep 02, 2008 | 1994 Volvo 850

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