what is causing my defroster not to work, my heater works one day then the next time it does not.It sounds like its trying to start but can't.
Feb 4, 2011 at 2:25 PM
Advertisement
MMPRINCE4000
CAR REPAIR CONTRIBUTOR
8,548 POSTS
Quickly touch the top and bottom heater hoses, if both are hot, then you may have a diverter valve bad, or blend door.
If both are cool then thermostat, if one hot and one cold then heater core is partially blocked.
Feb 4, 2011 at 2:33 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.