When my AC is on it feel like the heater is also on . would this be a heater valve problem ?

Asked by Aug 14, 2012 at 10:12 PM about the 1994 Mercury Grand Marquis

Question type: Maintenance & Repair

1 Answer

13,195

I would first look if your compressor is running if it is check to see what your low pressure side is running on the compressor. You should have around 45-55 lbs depending on the outside temperature.

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