Mechanics

WHEN I TRY TO RUN THE HEAT ALL I CAN GET IS COLD AIR AND I NOTICE MY A/C COMPRESSOR WILL BE RUNNING AND THEN BACK OFF FOR A FEW MINUTES AND BACK ON.

2007 Ford Taurus • 150,000 miles

I have all ready replaced the A/C and heater control switch, and thermostat, still no heat and the A/C is still circulating on and off.
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Kimbillingslydeffenbaugh
October 11, 2012.



For the heater not working, you need to check the air-mix control. The vents are eiter stuck or not being moved.

For the A/C compressor cycling on and off, it could be a faulty relay, switch, excessive freon in system or a faulty compressor clutch.

KHLow2008
Oct 11, 2012.