[looyvillelarry]

I've searched quite a few OAT issues, but never have I found this one.

If the AC is off, all is well. The OAT registers properly. The minute I turn the AC on, it starts climbing about 2*F a minute !, even at highway speeds. This is the OAT, NOT the coolant temp !

If I turn the AC off, it will fall (slower)..

I've never had the AC on in this car and was preparing for summer.

Any ideas about what could be causing this ?

TIA

 

[looyvillelarry]

It wasn't like it was heating up 2-5 degrees.. Like it stopped at 122* . on a 75* day. So, that will cause the ac compressor to basically never shut off.

It seems to have been something with the OAT hanging low. Fixed now