AC/Issue

zombe1961 · #1 07-29-2009, 04:02 PM

My 2002 dies when you turn on the air. You can hear the engine come under load then the idle starts cutting out and it dies. Turn off the air and it is fine.

HELP!

Chris Stewart · #2 07-29-2009, 08:50 PM

Try disconnecting the AC clutch wire then turn the AC switch on to determine whether it's a mechanical or electrical problem.

zombe1961 · #3 08-01-2009, 09:51 PM

The idle seems a little low and when I turn on the ac it just stalls the car. Is there a sensor the controls idle? Could a PCV Valve cause this.
I don't think it is the AC Clutch.

Chris Stewart · #4 08-02-2009, 08:38 AM

If the AC will stall the engine because of a stuck idle air control valve (IAC) then putting the trans in any gear should stall the engine too.

zombe1961 · #5 08-02-2009, 12:25 PM

The compresser is putting out cold air. and the pully is turning. I am at a complete loss

Chris Stewart · #6 08-03-2009, 09:06 AM

Does the engine stall when you put the transmission in Drive or Reverse with the air conditioner OFF?

zombe1961 · #7 08-03-2009, 09:21 AM

No it runs fine w/the air off.. If I am on the freeway I can turn the airon and car is fine. Pull up to alight low rpm it dies .

Chris Stewart · #8 08-03-2009, 09:54 AM

Sorry, I can't find any pics. Is there a device mounted on the throttle body that has a wire or wires going to it?

zombe1961 · #9 08-03-2009, 10:54 AM

There is a plastic cover on the drivers side cover right on top is a sensor or something with a plug. Do you know where we could get a picture.

zombe1961 · #10 08-03-2009, 01:09 PM

Quote:

Originally Posted by Chris Stewart

Sorry, I can't find any pics. Is there a device mounted on the throttle body that has a wire or wires going to it?

Yes it is right on the top by that plastic cover.

Chris Stewart · #11 08-04-2009, 08:14 AM

Wow, really hate to mess anything up. Besides getting a manual for your '02 at the local parts store, maybe a Pro will see this and respond.

zombe1961 · #12 08-04-2009, 11:02 AM

What is the sensor called can GM help? Is it easy to change?

Chris Stewart · #13 08-05-2009, 07:37 AM

On earlier engines they were called an Idle Air Control valve (IAC).

zombe1961 · #14 08-05-2009, 10:33 AM

Quote:

Originally Posted by Chris Stewart

On earlier engines they were called an Idle Air Control valve (IAC).

GM says you have to peplace the entire throttle body. It is not servicable.

Any ideas?

zombe1961 · #15 08-09-2009, 04:35 PM

Could it be the MAP sensor?

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