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Old 05-31-2000, 10:14 PM
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Join Date: Sep 1999
Location: montreal,quebec,canada
Posts: 53
when i start the car cold,the a/c works fine.
as it warms up the compressor stops cycling .
even if i try tapping the relays nothing will make the compressor come on . i have checked the amount of regrifant and it is ok...maybe slightly overfilled.

any help would be appreciated.
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Old 05-31-2000, 10:24 PM
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Join Date: Jan 2000
Location: New Bedford, MA USA
Posts: 1,583
Whoops, did you say overcharged!!! This condition creates excessive pressure and when the system gets hot the pressure goes up even higher, which will activate the high pressure cutout switch to protect the system from overpressure. Get the charge corrected and see if this makes it OK. The fact that it cycles when cold is a dead giveaway for heat related overpressure. Good luck and don't wait until excess pressure does something nasty to the AC system...

Jeff L
1987 300e
1989 300e
1987 BMW 325

[This message has been edited by jeffsr (edited 05-31-2000).]
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