Cadillac STS The newest installation of the performance sedan from Cadillac, having replaced the Seville

AC has cold air comming out for passenger only.

  #1  
Old 07-15-2006, 04:48 AM
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Join Date: Jul 2006
Posts: 3
Default AC has cold air comming out for passenger only.

I get good cold air out of the passenger side vents in my 98 STS. The drivers side vents have much warmer air from inside of car comming out. . . Turning down temp on drivers side makes no difference. I suspect some kind of flapper door problem inside the ducts some place.
 
  #2  
Old 07-16-2006, 08:54 PM
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Join Date: Jun 2006
Posts: 507
Default RE: AC has cold air comming out for passenger only.

You may find this hard to believe, but this is a very common symptom of low refrigerant.
If the system has a full charge(2 lbs) and the problem remains, then a relearn of the mode door actuators would be next.
A tech 2 is the only tool i know of capable of this procedure.
 
  #3  
Old 07-17-2006, 01:08 AM
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Join Date: Jul 2006
Posts: 3
Default RE: AC has cold air comming out for passenger only.

Thanks very much. I'll check out the refrigerant charge and let you know.
Appreciate the info.
Bob
 
  #4  
Old 07-18-2006, 01:03 PM
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Join Date: Jul 2006
Posts: 3
Default RE: AC has cold air comming out for passenger only.

That did the trick. By the time I got 10 oz. of freon in it, the Drivers side was putting out air below 40 degrees. I put the rest of the 12 oz. can in. It's running great now.
Thanks for the tip.
bob
 
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