So I have an 87 and the heater on it doesnt work..ive changed the climate control box to one from a post 89 and still notthing. Itll start at the normal temp (75 I think?) And if I change the temp to as high as itll go, all it will do is blow less air..the lower I put the temperature, the more air itll blow, but the temperature wont change. All it does is literally blow air. How can I fix this?
heater/air not working..why??
- Thread starter shadowsX9
- Start date
Check the vacuum switch for the heater core coolant flow valve under the hood near the wiper motor to make sure it's hooked up and working
A easy way to see if it's working is to unplug the vac line going from the manifold to the switch and put it directly to the actuator, if it moves and opens the valve letting coolant into the heater core, then see if your heater works