Question about 2008 Buick Enclave
All is well with A/C system while driving for a few hours...once the outside temp starts to ramp up to say 90 degrees, the volume of air coming out the front vents reduces - air is still cool...over time (15 minutes) the air flow reduces to almost nothing...can turn on the rear system and cool air flows for awhile at full blast...after further time the coolness of the air pretty much goes away...by this time, air out front is minimal, air flow in rear is fine, but air is not cool...stop and turn off the car and wait for maybe half hour and start up and all is well for maybe an hour, then the cycle starts over...tried changing all modes on the control and cycling system on/off switch to no avail...must be one of the control units - I understand there is the main control and a vent control one...any ideas from someone who knows the system?
Had a similar thing happen to me, recharged the system and have not had it happen since, note that you should make sure you get a recharger with a long hose, the recharge port is low behind the radiator. It occurred on mine at the beginning of summer.
Posted on Sep 17, 2014
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Posted on Jan 02, 2017
Crank sensor. Next time it does this spray some water on it and see if it cranks. Its by the crankshaft pulley towards front of car.
Posted on Jun 17, 2009
you going to have to tear the dash apart (ac control panel) to see why your switch is not working. The control valve unit works on vacum systems and you need to find out where is leaking or the hoses is old and broke off. If your ac compessor still working and blowing cold air but does not adjust the temperature, it will be in the control valve. Is very easy to fix if you locate the leaks or a bad valves. hope that help some.
Posted on Aug 02, 2009
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