Question about 1991 Ford F250

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Intermitten AirConditioning I have a 1991 F250 with a 7.5L engine. When first turned on the A/C works great then starts blowing hot air. I turn off the A/C and after a few minutes turn it back on and it blows cold air again, then the hot air starts again. I can continue the "cycle" indefinitely.

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Sounds like there is either

1. Too much freon in there

or

2. Not enough freon in there.

Freon (R) being freon or low CFC equivalent.

Sounds like the system is working fine, then the condensor or compressor gets too cold and freezes up (or gets WAY too hot). when you turn the A/C off, the system has time to stabilize and return to a more 'normal' condition.

Posted on Mar 04, 2009

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