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2000 Ford Mustang Base 2dr Coupe

2000 Ford Mustang
Trim Info:
Rear Wheel Drive, 2 Door Coupe, Subcompact
20 mpg city / 29 mpg hwy
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June 30, 2012, 11:50 am

Joel F

Question: My a/c is not working right.

I have a 2004 Ford Mustang 3.9L v6. Whenever I turn on my a/c, I notice a considerable drop in horsepower and torque. The air is ice cold, but I know that the drop in hp and torque cant be good. Also, whenever i go over about 3500 rpm, my battery light comes on, then goes right back off. Whats wrong?

July 9, 2012, 9:46 pm

Richard W
Expert Mechanic

I would have your alternator checked. The HP loose could be from low voltage to the computer.

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