revdarkwing

1996 220C - When I turn on the climate control to defrost (HI) it blows hot onto the windshield and side vents. If I put on auto or any of the other settings.. heat, heat - vent, it blows cold. It even blows cold through the defrost vents when I put the climate control direction to up only.

Not sure where to start looking but obviously there's a switch or valve malfunctioning. Any one have an idea what's happening and how to fix?

Plutoe

You have self AC\Heater self diagnostics on your car run the fault test and post the fault code(s)!!

revdarkwing

OK.. I did it and this is what I got.
Permanent errors... the ones without the degree symbol.
22 7

Intermittent Errors (with the degree symbol)
23 2
23 3
41 6
41 7
41 9
42 1
42 2
45 1
45 2
45 3
45 4
45 6
45 7
45 8

Now.. I should tell you that currently the AC system is out of coolant as there is a whole in the AC radiator. Just haven't been able to afford to get that one fixed yet so ignore those.

I just deleted all the codes since, unless they auto-delete with a battery disconnect, they have been stored up since I bought it new in 1996. After running the system from defrost to heat a few times and also changing the flow.. it only shows the 227 code on both permanent and intermmitent error. That would be the outside temp sensor which I can confirm is inoperable. Last winter it started showing wildly inaccurate readings then went dark. Not sure where to do from here.

Thanks for the help