Question about 2003 Ford F350 Super Duty DRW SuperCab
Just purchased a used 2003 F350. The heater will not work. The hot water valve is not getting any vacuum to it. The rheostat ohmed out to be operating. Voltage at the wiring plug to the rheostat checks out to 5 volts. I Jumpered past the rheostat with no results. Can you tell me where to find the heater vacuum controller?
Try removing the vacuum hose at the back of the vacuum pump start the engine and see if you can feel it pulling a vacuum it should **** you're finger in a bit or if you have a vacuum gage hook that up and see what it readsshould be at least 12-15 in vacuum. Also is the heat stuck in defrost mode ?
Posted on Jan 08, 2009
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Posted on Jan 02, 2017
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