My car has been stalling at stop lights with the A/C on. It'll be ok for about 30 seconds, and then it will start to hiccup and that's when it'll stall. It idles at around 700rpm with the A/C off, with it on it sits at about 600rpm until it stalls. What can I do to fix this? It's quite irritating having to pop it into neutral at a light.

 

Does your cooling fan come on when the ac is turned on ?

 

The cooling fans come on at exactly when they're supposed too.

Should they come on directly with the A/C? I've never had an issue with overheating. At idle with the A/C on, it'll never go over 240, even with the hot weather.

 

Sounds a like bad tps or Idle air valve. Im not 100 percent on how maf cars are suppose to idle with the ac off and on, but my car idles at 600 with out the ac on and about 620 with ac on, and idles smoother actually. If your car doesn't stall with the ac off, sounds like a bad idle valve. Because your idle air will adjust position with ac off or on

 

There is a pressure switch on the ac line that on your car is normally closed 89 is n/o. When the ac is requested on d11 of the ecm. When this green wire is open the cooling fan is commanded on and the target idle speed is commanded up for the additional engine load.

 

Checked today, neither fan comes on with the A/C. They only come on when the car reaches the required temperature.

 

 

Where is that switch located?

 

On the a.c high pressure side hard line.

 

Is this the switch? It's the only one I can find on the A/C high pressure line, but one of the wires is blue, instead of dark green as that diagram suggests.

If it is, I tried jumping the terminals on the connector with a paperclip (as you can see), but neither fan came on when I did. When I take out the paperclip, one fan on the driver side comes on. The car still stalls though, w/ or w/o the clip.

 

I guess they have changed the colors over the years. This shows gray and blk.