Mechanics

AC WON'T TURN ON

2004 Pontiac Vibe

Air Conditioning problem
2004 Pontiac Vibe 4 cyl Two Wheel Drive Automatic 96000 miles

Occasionally (about 25% of the time) when the car is started from sitting in park for more than 2 hours, the AC will not turn on. The blower will not start and there will no heat or cooling. After driving, if a bump in the road or speed bump is hit, the AC will suddenly come on. It will cool and heat just find.

Any ideas what could cause this?

Possibly related to this though I do not know, is the fact that the left side headlight socket has burnt out 3 times. I have spliced in a new socket and never had to replace the headlamp. I do not know the leads but it is the top wire that is charring every time.
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Wintersilke
July 15, 2010.



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