ac prolem

Asked by Jul 04, 2012 at 01:06 PM about the Mercury Grand Marquis

Question type: Maintenance & Repair

at idle ac blows fine, under power ac goes away and heater comes on

1 Answer

257,935

Those are usually the signs if you are low on refrigerant/leak or your compressor can't keep up and needs to be replaced. Slim chance it can be a blend door issue.

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