Question about 2002 Chevrolet TrailBlazer

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Car dies when air compressor for heat or air is on

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If you've had the battery disconnected recently, this fix might work for you. Clean out your throttle body. Sounds weird, but your throttle body builds up junk over time and if you disconnect your battery, your computer gets reset to stock settings and thinks it is getting the same amount of air as when it had a new (clean) throttle body. This messes up the airflow calculations, especially when the AC kicks in. Get a bottle of throttle body cleaner, remove the throttle body assembly and be very careful cleaning out the back of the unit as it has some razor sharp edges. Reinstall and start the Trailblazer. Should be fine.

Posted on May 20, 2010

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Happening on my 2002 envoy as well I was told its a resistance, should not cost more than $80

Posted on May 16, 2010

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I had the same problem on a ford taurus, the compressor was siezed and put too much strain on the engine and it would stall out. hope this helps.

Posted on May 08, 2010

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Posted on Jan 02, 2017

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1 Answer

When I turn on air or heat my mustang 2000 gt


When you turn you heat or air on, your compressor engages. There could be a drag on your belt system. Listen to your air conditioning pump for strange sounds and drag on main drive belt...could be bad bearings or a plugged air conditioning pump (low on cooling Freon in system maybe; lubrication?)

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The compressor clutch ti is engaging with heat mode, normal?


Depends.
The compressor will run when the control is in defrost, but should not in heat mode. In defrost mode the compressor runs to dry the air blowing onto the windshield.

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1995 Nissan Altima - a/c blows warm air. Several other problems, car has a loud idle and will often die out if I do not keep the a/c or heat setting on low, then the car idles normal. Just moved to Fl


Possibly bad compressor, worn bearings in a pulley or lines TO compressor. Also, perhaps wrong refrigerant added. Sometimes it makes a difference as there are some 7 different kinds.

Oct 29, 2017 | 1995 Nissan Altima

1 Answer

Engine dies as soon as I turn on the air or heat.


If by heat you mean defrost, it could be a seized AC compressor or compressor clutch, since the AC compressor is also engaged when in defrost mode to remove moisture from the air.

Try turning the flat, round plate on the front of the AC compressor by hand (WITH THE ENGINE OFF!!) If turns with only a little resistance, the compressor is most likely NOT your problem. If it not turnable by hand, then your compressor is seized up will most likely need replaced.

Sep 15, 2011 | 2005 GMC Envoy

1 Answer

Car dies some times when heater is turned om


If you have air conditioning, I'd check the A/C compressor to rule that out first. It has a very real potential to be going bad. The clutch on the compressor stops putting drag on the motor causing it to stall. Any high pitched squeal just before stalling? I know you're talking heat, and I'm talking A/C I realize that. Happens a lot on Windstars I've dealt with.

Mar 01, 2010 | 1998 Ford Taurus

1 Answer

AC/Heater control problem


In the dash there is a part called the blend door and blend door motor. This allows you to have warm air, and not just cold AC or hot heated air. This motor goes out and whatever position it "dies" in is what kind of air you get. The part is relatitively cheap but the labor cost is huge, because the dash needs to be removed for access.

May 05, 2009 | 1995 Lincoln Town Car

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