Temp set button on AC
Thread Starter
Pro
Joined: Dec 2004
Posts: 590
Likes: 2
From: Fairfield CT
Temp set button on AC
The left side, temp lowering, side of the Temp Set button on my 94 is not working. I can increase the temp but not lower it. When it does this I can't control the Off, Auto, and recirculate buttons, either. However, sometimes after the car's been shut down, it will work long enough for me to lower the temp. I called the local dealer's part shop. They said the whole AC/Heat control unit needs to be replaced, not just the button, for over $200.00 for the unit. I just read the post about cleaning the contacts. If that doesn't work, what are my options besides riding around with my heater on in NM and AZ over the summer.
I have the temp set at 68 and don't plan on touching it for now. That's the cheapest and laziest option, but I like my gizmos to work.
I have the temp set at 68 and don't plan on touching it for now. That's the cheapest and laziest option, but I like my gizmos to work.
Burning Brakes
Joined: May 2006
Posts: 904
Likes: 0
From: Boynton Beach FL
well..
If you read my other post, and are willing, try smashing the unit with your hand... try a light slap on the side first, and work your way up to about a 50% power punch. It's the only way I can get mine to turn on/off. But once you get it set the right way, leave it 
Safety Car
Joined: Sep 2002
Posts: 4,971
Likes: 9
From: The reason time exists is so everything doesn't happen at once
Le Mans Master
Joined: Jan 2006
Posts: 5,621
Likes: 206
From: Orlando FL
My first recommendation would be to clean the connections on the rear of the controller as the others suggested. I found this problem before I ever got on the Forum. That fixed mine and I got lucky.The other problem with it is bad internal solder connections. I have read some extensive articals on this. It will take a elevated skill level of soldering and electronics repair (as indicated bt artical). I myself have not been into this all though well qualified. From what I remember, the connections between the main board and the front panel is where the problems are. If you go there, best of luck.
