1997 Ford Explorer Q&A
1997 Ford Explorer Question: HEATER 1997 Explorer
The heater valve may be defective or the vacuum supply to it is affected in some way. You can check, or have someone check the vacuum supply to the valve when the heat is turned off, and make sure the hoses are OK too. - munkyrench
A failed heater blend door or actuator can cause the temperature control for the HVAC system to stop working....
All seems good under the hood the hoses are hot in and out of the heater core but i turn on the heat inside and just blows cold air.I checked the deverter door and seems to work opens only if i tur...
is there a heater control fuse on my 97 explorer 4.0 heater was working fine then all at once no heat just cool air.