Explorer heater problem


Mechanickid

Mechanickid

15+ Year Member

Joined
May 24, 2008
Messages
976
Points
3,101
City
Martinsburg W.V
Vehicle Year
1988
Transmission
Manual
I have lost the heat in my 91 explorer. What could this be due to? I put it on heat and mellow not cold nor hot air comes from my vents. just air. :(
 
is the truck warming up to the proper temp? If it isn't, your problem is the t-stat is sticking open.
 
T-stat....Heater core....
 
Actually a non functioning blend door actuator is just as likely.

AD
 
I do believe its the blend door. It just stays cold when I switch to heat and I put a new thermostat in it when I bought the truck. The heater core is not leaking and I don't think its clogged.
 
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