EVLGTO

I've had the a/c issue for a while and haven't been able to figure it out yet. One thing I have noticed is, when the weather is very hot outside the a/c won't blow cold. When weather is normal or cool, it works just fine. Sound like something is causing the a/c to have high pressure I'm thinking.

Is there an air filter in these cars? I'll start there.

antfarmer2

Is your compressure cycling on and off alot? Might just need some freon.

Cliff Harris

Your temperature blend door might have a problem. Remove the resistor network (C60) or blower control module (C68) from the evaporator housing in the engine compartment and look into the opening. You will see the rusty blend door (they're always rusty for some reason).

Set the HVAC temperature to minimum and check the position of the blend door. It should be blocking the heater core.

Set the HVAC temperature to maximum and look at the blend door. It should block the opening into the HVAC ducts and leave the heater core exposed.

EVLGTO

This does sound like it might be the problem. I do feel tons of heat coming in when it's blowing.

2VettesMike

Try disconnecting the battery for a few minutes and reconnect or remove the HVAC fuse in the passenger's side panel. Either way what you are doing is a hard reset on the HVAC controller and the servo blend door so it relearns it's position. Do not try moving the door by hand bad things will happen.

Since 1996 I have done this about 3 times when I've had a similar problem and it fixed it.

Good luck.

Mike