Question about 1987 Mercedes-Benz 300-Class

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I have a 1987 Mercedes 300E and the A/C compressor will just shut off. When this happens power is lost to the compressor. Can you assist with what would cause this problem.

I have a 1987 Mercedes 300E and the A/C compressor will just shut off. When this happens power is lost to the compressor. Can you assist with what would cause this problem.

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  • erisys May 11, 2010

    Does the comp come on again after a while?
    What is the low side pressure as the compressor comes on, it should be around 30 psi. If it is higher, could be a lack of cfc. if lower, could be a plugged expansion valve.


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Hello,hoping your freon is full,check your fuse for air con system,maybe your pressure sensor in your dry tank is defective, check your aircon relay in back of your battery,pull out,check if have burn smell,before you replaces the relay try to check first the resistance of your magnetic clutch,ty

Posted on Apr 22, 2009

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