1988 Volvo 240 defroster

1988 VOLVO 240
85,000 MILES • 4 CYL • 2WD • AUTOMATIC
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POTTERTHOR
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After years of adequate service, my defroster has stopped functioning. The fan is okay, and it still heats, but it justs puts out a tiny bit of air onto the windshield and the windshield frosts up terribly.
Jan 30, 2008 at 2:07 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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CAMARO701
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I would gather that the defrost is run by a vacuum switch. Check for a cracked or leaky hose that is not producing enough suction to open and close the valve that directs the air to the windshield.
Feb 4, 2008 at 7:07 PM