2nd Gen Non-Engine/Transmission No Heat

[fourwheel1]

Need help on why heater quit working. Was driving and stopped for night, next morning no heat. Changed thermostat, engine warms up but no heat inside. Controls all work and operate like they should including changing from def. to floor, etc. Any suggestions??

 

[ABennin]

Restriction in the antifreeze feed line to the heater core. I had the same problem a few years ago.

 

[JMDancoe]

It is either a restriction in one of the coolant/heater hoses or the cable on the temp bar lever has come undone at one end or the other (on top of heater box, under dash and at the control unit). The slide bar is the control to change door from cold air to hot air through heater core. If it was working as it should the day before, those are about all that would happen that suddenly. The core could be plugged, but that usually plugs over time, not suddenly.