Wierd A/C problem
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Junior User
Joined: Aug 2005
Posts: 82
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From: Firebaugh/Coalinga CA.
Wierd A/C problem
Ive got this problem, i have only 1 A/C blower setting, its like medium or low, i replaced the switch that activates the blower motor with no help, what could this problem be, I dont mind it, i have 39 degree air coming out of it but its like 108 here right now, any help will be appreciated.
Oh yeah, just another question, how do these trucks sound in relation to a PSD straight pipe, when we have a straight pipe on a turbo??
Oh yeah, just another question, how do these trucks sound in relation to a PSD straight pipe, when we have a straight pipe on a turbo??
Senior User
Joined: Oct 2004
Posts: 321
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Sounds like the resistor board has gone out. That board has three resistors on it - one for each of the lower speeds. Hi fan speed runs thru a thermal limiter located in the resistor pack and runs straight to the blower. If one of the medium fans speed resistors burns out, it knocks out all fan speeds above it. Look for the resistor pack in the plenum area - it'll have a four connector plug. The wires will be: black, yellow/red, orange/black and light green/white. Pull the connector loose, unscrew the screws holding the pack in place, and check for a broken resistor.
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thenutisloose1
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
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Dec 3, 2005 09:26 PM
