DS75
Member
Hi - I have an 86 coupe and am new to the forum. Recently my HVAC system stopped blowing air. The car has an electronic control module (possible rebuilt/refurbed). I don't know if it's the C60 or C68 that I have seen referenced in the forum. The temp control seems to work fine, though it's hard to tell when all you get is a faint whisper of air coming through the ducts.
I am asking how to diagnose the problem to minimize the amount of money I throw at parts. I have some basic tools and a voltmeter but no code scanner. What I have done so far is:
Any and all suggestions are welcome. This is my daily driver and its getting cold without the heat in the mornings, plus I'd like to be able to defrost my window. Thanks.
I am asking how to diagnose the problem to minimize the amount of money I throw at parts. I have some basic tools and a voltmeter but no code scanner. What I have done so far is:
- Removed the ECM and cleaned the contacts and verified the connector harness is ok. I didn't see any burn outs or smell any smoke on the ECM components. It works a little funny, i.e. when I press increase on the fan speed it sometimes takes a few button presses to get it to work. It also used to occascionally go lights out but that has seemed to have gone away since the cleaning
- All fuses in the dash are ok
- What I think is the blower motor fuse (5A I think) located next to the blower motor look fine
Any and all suggestions are welcome. This is my daily driver and its getting cold without the heat in the mornings, plus I'd like to be able to defrost my window. Thanks.