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Discussion Starter #1
heater ac only work when fan switch is on low. quits on any other speed. a friend suggested it was the blower motor resistor. any other thoughts?
 

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That would be the first place to look. Could be the switch (less likely) The high speed is a separate circuit with a relay and in line fuse, right upper firewall area.
 

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Discussion Starter #4
thanks guys. i think i have deeper issues right now. i need to replace my heater core. where is the best place to buy one and does some one have a good procedure for r&r. i follow clear directions well (although my wife says otherwise).:beer:
 
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