Hi. I have a 2010 Hero 3.8 with 19K on the clock. I had it in the dealer's shop two weeks ago because the defroster didn't work. They took it apart and found the linkage was disconnected. They repaired that. We left home in Vermont on Friday and drove to Florida looking for some sun. We found it on Sunday with temps in the 80s. The problem is that the A/C no longer cools. The fans work, the air seems to go where directed, but it is ambient air temp. When selecting A/C, the compressor does not seem to kick in and there is no drop in engine rpm. Cycling switches and controls does nothing to improve the situation. I checked for blown/loose fuses but didn't see any. Is there a particular fuse or relay that controls the compressor? Could there be a plug connection that might have been disconnected when they were working on the defroster linkage? Being 1500 miles from home, I can't take it back in to get checked this week, and I was pretty unpopular with the family yesterday afternoon.
Any thoughts would be appreciated. Thanks

 

Hello,

I've had the AC fail twice on my 2009 SXT 3.8, both times it was the A/C discharge line. Both times I discovered it in March when I tried the A/C just before a trip to Florida. It was fixed under warranty both times, the second time they used a re-designed part. The line in question is the hose that loops downward from the compressor and into the condenser. The line had a split that was clearly visible and you could also see evidence of A/C oil that had escaped from the line.

They were able to diagnose and repair the problem in less than two hours.

The only fuse that I could find that are associated with the A/C are # M11 & M34, both listed as 10 amp red fuses.

Good luck from a fellow Vermonter