Air conditioner compressor won't come on when I turn the temperature down or on to cool for air conditioner.

50

Asked by dwel Feb 22, 2017 at 12:16 AM about the 1991 Cadillac DeVille

Question type: Maintenance & Repair

The compressor is new and works with direct voltage applied, the blower fan also cuts off heat as I turn the temp down and continues blowing cooler air without the compressor Kicking on,  also replaced the temperature switches  and the computer box.
The heat comes on and works perfectly..

4 Answers

189,395

Are you sure you have enough refrigerant in the system? If you are sort the switch will not make andvturn it on. If you apply direct power of course it will turn on. On you car you have at least 4 cans of refrigerant, did you hook up gauges to see what pressures you have. On say a 70 degree day you back pressure should be about 70 on the low side at startup and around 150 on the high side and both will come down somewhat the low side went operating normally will be about 25 PSI

3 people found this helpful.

Refrigerant at max levels. Ac won't come on when you try Manuel start but when it decides to come on it freezes you out of car

Your Answer:

DeVille

Looking for a Used DeVille in your area?

CarGurus has 8 nationwide DeVille listings and the tools to find you a great deal.

Postal Code:

CarGurus Experts

  • #1
    James Sparrow
    Reputation
    4,090
  • #2
    tuff4x4
    Reputation
    3,090
  • #3
    Cynthiasmith
    Reputation
    2,840
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Corvette
31 Great Deals out of 1,000 listings starting at $11,995
Used Ford Mustang
51 Great Deals out of 1,253 listings starting at $4,995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.