heater core
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Junior Member
Joined: Nov 2011
Posts: 3
From: hillsboro OR
heater core
I have a 75 250 high boy. When I run the heater it sometimes makes a very loud screeching noise. I have asked a few people about it and one said I have something in the heater core and another said I have a bad bearing in the motor, I don't know which it is or how to tell, pleas reply
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