Mechanics

NOT BLOWING

1991 Volvo 740

Air Conditioning problem
1991 Volvo 740 4 cyl Two Wheel Drive Automatic 314000 miles

when car is idle the ac is great, but when I accelerate it dosent some out the vents until I am off the gas.
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Volvolover
August 22, 2008.



Check for a leak in the source vacuum line that goes from the hvac control to the engine. Might have a check valve on it that is bad or a small leak in the line

Tiny
Jack42
Aug 22, 2008.