A/C issue

109,000 MILES • 2.0L • V6 • FWD • AUTOMATIC
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MARTIN SODANO
  • MEMBER
  • 1 POST
This is the GL wagon. my A/C works great when it works.
in order to get the A/C to work i have to set the selector to defrost wait a minute or three then switch to A/C and i will get nice cold air. but, then sometimes it will just go to warm air and i have to play with the controls to get the right sequence to start over again. what needs replacing? interestingly i have a similar problem with the cruise control, but it works once a day! when i start out in the morning the cruise works! until i hit the brakes then it will no longer work (until the next morning). the the same thing works fine once a day.
Sep 26, 2017 at 10:08 PM
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STEVE W.
  • ✓Experienced Mechanic
  • 15,411 POSTS
Well if you have the manual (3 dial) HVAC control the problem is probably the same thing that is keeping your cruise from working. A vacuum leak. Both systems use vacuum to operate and both get that from the vacuum block, it also feeds a reservoir with a check valve. I would check over the vacuum lines for leaks/damage and check the vacuum reservoir check valve.
Sep 27, 2017 at 12:45 PM
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