A/C problem question on 360

The A/C on my 360 has a quirk. When the temperature selector switch is set to "Lo", the vents blows cool but not as cold as one would expect. Move the temperature selector switch one notch up ... like 62 degrees ...the A/C blows full hot.

Techs have checked function and refrigerant levels. They seem fine. They suspect that the electronic climate control module is bad.

Has anyone else experienced this?

Steve

 

Thanks for your reply Motob ... the techs did do what you suggest. They ran through the entire diagnosis on the SD2 and the indicated temperatures where inline with what they would anticipate. They did also hypothesize that the the temp sensors may be at fault as well as the control module. But because the A/C blew very hot air when the temp switch was set to 66 deg (vs. Lo), leads them to think it is the module.

Steve

 

I'll ask them about it. Thanks, Aldous.

 

Update ...

A fellow F-chatter gave me some great advice. Went to the shop to try some things.

First, my tech plugged in the SD2 and checked for any error codes. Found several on the dashboard TCU. Cleared those codes. Then took another working A/C module (bored from a donor car) and found that it worked fine. Put the original module back in and now it is working correctly.

So should you experience this wierd behavior, try the following.

- Look for any codes on all ECU's. Clear the codes. Requires SD2.
- unplug the A/C module. There are two plugs. Leave it unplugged for 5 to 10 min.
- reconnect the A/C module. Start the car.
- turn temp control full low. Leave for few seconds. Turn temp control full hot. Leave for few secs.
- rotate back to low, then hot a couple of times.
- Check function of all controls

This procedure worked for me and saved me $900 for new module. My thanks go out to Dave, fellow F-chatter.

Steve