I have a 89 formula, i haven't had the car very long, i really have not driven it to much. i live in new york so its getting cold and I tested the heat the other day and it just didn't seem to get very hot. I deleted the heater valve but according to everyone i talked to that cant be the cause of no heat. I hoping its not the heater core, is there anything else that could cause the problem. Anything i can do to test and basically do process of elimination.

please help its getting cold and I've resorted to driving my sisters Sunfire. SLOW haha

 

Is your thermostat stuck open, or of a low value?


What is the wermed-up temperature of the car.

 

i dont believe it is stuck open, i want to say its around 160... Im going to replace the thermo just incase.