A/C on 1996 Mustang

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Granville - 14 Jul 2007 19:34 GMT

Today we took this car on a tour of the southern mountains and foothills
of North Carolina and noticed something strange with the air
conditioner. When I pressed on the gas while going up hill the air was
blowing cold but when I let off the gas coming down the hills the air
wasn't cold. This car is just a regular 1996 Mustang with a 3.8 Liter
engine.

My guess is that I'm chasing a bad vacuum line. Any other ideals?

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Mort Guffman - 15 Jul 2007 00:30 GMT

>Today we took this car on a tour of the southern mountains and foothills
> of North Carolina and noticed something strange with the air
[quoted text clipped - 4 lines]
>
>My guess is that I'm chasing a bad vacuum line. Any other ideals?

My 95 and my 98 both had this type of problem. The dealer fixed the 95
right away by replacing or adjusting the cycle switch - a very common
problem.

The 98 was a lot harder. They claimed this weird behavior is built
right into the non-adjustable cycle switch. After taking it back over
and over the problem went away - I have no idea why. The dealer says
it's "normal". Very annoying, but it went away years ago and never
came back.

Today it was in the 90's. The Woman and I drove around a lot and the
a/c pumped out tons of ice cold air the whole time.

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Ashton Crusher - 15 Jul 2007 06:23 GMT

I'm guessing that you are low on freon or it was just a really hot day
or your compressor is weak. When you are going up hill the engine is
turning at a reasonable speed to keep the AC pumping. When you are
going downhill the engine is just idling and the AC isn't pumping
much. Similar to how they will warm up when you are stopped at a
light.

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