GRINDING SOUNDS

1992 Ford Aerostar

Tiny

logan7221

November, 28, 2009 AT 4:30 PM

Heater problem
1992 Ford Aerostar 6 cyl Two Wheel Drive Automatic 312000 miles

Whenever I turn on defrost I get this odd grinding sound coming from the front of the car. Now the sounds are not constant but is on and off. I would say like every 2 seconds I get a loud grinding sound. What is
odd is this doesnt happen when I just use the vents for heat it only happens when I turn it to mixed or defrost.


Any ideas would be greatly appreciated.

Thank You

FOUND 1392 RELATED QUESTIONS

1 Answer

Tiny

merlin2021

November, 29, 2009 AT 10:19 AM

Defrost setting turns on the A/c compressor, pulley bearing may be no good. Remove the serp belt and spin the pulley by hand, is it smooth with no binding?

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