Hello there everyone, I'm new to the forums because I purchased a 1986 Cutlass Supreme Brougham Coupe, the 5.0L V8 and it is starting to require some repairs. I am not great at fixing these things but am trying to teach myself. The heater core was leaking so was replaced and after this I could not get my air to blow hot except for once or twice and it has not done it since. Before I replaced the HC the defrost and heater had no problems. All the dampers are working and it blows plenty of air through all the settings it just never gets hot. I found that there was a cracked PCV valve elbow so I have that part coming in tomorrow. I have inspected all the other hoses and vacuum lines and there don't seem to be any other issues.
As far as it working after the new HC was installed, this occurred at random on two occasions when it was particularly cold. It has not worked since last year but as the weather was warming up I didn't care. It has been pretty cold the last few weeks so I have decided I should fix this problem. Driving with the windows down to keep the windshield from fogging is getting old even though my dog seems to be pretty happy with the situation.
As far as it working after the new HC was installed, this occurred at random on two occasions when it was particularly cold. It has not worked since last year but as the weather was warming up I didn't care. It has been pretty cold the last few weeks so I have decided I should fix this problem. Driving with the windows down to keep the windshield from fogging is getting old even though my dog seems to be pretty happy with the situation.