cab hvac not working


Asked by Apr 14, 2013 at 02:03 PM about the 1992 Ford E-350

Question type: Maintenance & Repair

fan switch and selector switch not working.

2 Answers


The fan switch could have a blown fuse. It could also be on a older vehicle that the blower motor brushes have worn out and the motor needs replacing.


You need vacuum to change the position of the HVAC doors. On older cars, the vacuum hoses that power the vent doors crack and leak. Check your hoses and replace if necessary.

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