Question about 2005 Lincoln LS

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A/C Compressor not running

The car has been sitting for four months and was only started periodically and driven around the block once. The air has not been used probably since last summer. It is now not functional. The compressor does not kick on. I checked the fuses for all hvac-related components and all were good. I did not test the relay for the a/c clutch however.

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  • carls82 Jun 14, 2009

    Thank you both, I will try disconnecting the battery first, then I will try a recharge.

  • carls82 Jul 26, 2009

    The system was actually reading very high on the low-pressure side: approximately 120psi. I did not attempt disconnecting the battery yet, but I did de-pressurize the low-side and recharged it to no avail. I guess I will try disconnecting the battery just because, though I seriously doubt it will do anything.



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IT may be that the climate-control relay is in a open position and/or possible low-pressure switch fault, sometimes dis-connecting the battery for a few minutes will reset the operating modes and/or system.

Posted on Jun 14, 2009

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If the system pressure is too low the compressor will not kick on. Maybe try recharge.

Posted on Jun 14, 2009


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