1999 Dodge Truck Air Conditioning intermittently blow warm

1999 DODGE TRUCK
160,000 MILES • 6 CYL • 2WD • MANUAL
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JAN A
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When the air conditioning is running it will blow warm air for just a couple of seconds and then go back to cooling. It blows cold for about two minutes and then warm for just a second and it seems to be timed at the same interval on off on off. Checked vaccum lines but they seem to be OK.
Oct 8, 2008 at 8:36 PM
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JACOBANDNICKOLAS
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Hi:

I would have the freon checked. It seems to be cycling which can be caused by a low charge.

Let me know what you find out.

Joe
Oct 8, 2008 at 8:55 PM