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2002 Mercury Grand Marquis Question: How do I check to see if a relay is bad?

 

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frankerobinson, Waco, TX, June 03, 2011, 09:58
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My air conditioner is not blowing. I checked the fuses and there good. I'm looking at the relay and I don't know if it's good or bad.

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  • Answer #1

    June 07, 2011, 18:31
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     Master

    First and foremost, check your pressures for your A/C system, because if the refrigerant is low, the A/C compressor never be commanded to operate by the Climate Control Computer.

    here is a good check sheet for inspecting why your A/C does not cool properly, it also includes your climate control module and pulling codes from that as well. You have a pretty modern car and the A/C system has it own computer controls with sensors etc.

    http://repairpal.com/air-conditioning-diagnosis

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