Electronic Climate Control
Thread Starter
5th Gear
Joined: Jul 2025
Posts: 5
Likes: 0
From: Gloucester Massachusetts
Electronic Climate Control
Hi all. I have a 89 convertible and I’m not sure if I have an electronic climate control problem or a blend door issue. If the temperature is set at 60 it blows cold air but if I put it at 70 it’s like it’s on 90 and blows very hot air and won’t go back to 60. Anyone have any ideas? Thanks in advance
Drifting
Joined: Nov 2015
Posts: 1,714
Likes: 331
Finalist 2020 C4 of the Year - Unmodified
What's the actual temperature in the car at the time?
Setting target temperature to maximum or minimum forces the control to ignore the temperature and do max heating or max cooling. One degree off, it's back to responding to actual temperature.
"Won't go back to 60", as in the controls will not reduce the target temperature back to 60?
Setting target temperature to maximum or minimum forces the control to ignore the temperature and do max heating or max cooling. One degree off, it's back to responding to actual temperature.
"Won't go back to 60", as in the controls will not reduce the target temperature back to 60?
Racer
Joined: Mar 2025
Posts: 494
Likes: 242
Hi all. I have a 89 convertible and I’m not sure if I have an electronic climate control problem or a blend door issue. If the temperature is set at 60 it blows cold air but if I put it at 70 it’s like it’s on 90 and blows very hot air and won’t go back to 60. Anyone have any ideas? Thanks in advance
So, to clarify do you mean the actual temperature won't go back down or the display won't let you set the temperature lower? I may have the latter situation myself.
Thread Starter
5th Gear
Joined: Jul 2025
Posts: 5
Likes: 0
From: Gloucester Massachusetts
Electronic Climate Control
The temperature will not come down. The display seems to be working fine but I was wondering if it just wasn’t sending the signal to the blend door actuator. Can you reach the connector at the blend door without taking the dash apart?
Racer
Joined: Mar 2025
Posts: 494
Likes: 242
Also clean up your electrical contacts on the connector while you're in there.
Mine had an aftermarket stereo wiring jumbled in there so I had to remove quite a bit to access. It would be a tight fit with the ECM still bolted in there but Agent did it.
