Originally Posted by rs2600
Just bought a 89 GT conv. Problem is, there's no heat inside the car. Engine temp is within normal range and fan is working. Hoses in the engine compartment going to the heater and comming out again are just lukewarm. When idling, a litter more heat comes through the defroster bur as soon as the car starts moving it gets cold again. What could to be the problem?
Hello and good day:
Have you consider the possibility of a Clogged Heater Core??? You may need to do a Radiator -- Core Flush....
Also you may want to Change the Thermostat as well.