Join Date: Aug 2009
Location: Western Massachusetts
Beaten up subject. No heat...
Well, I took all the basic steps to get the heat back. Flushed the heater core in both directions several times, replaced as much coolant as I could without removing knock sensors (dead frozen). The coolant is relatively clean. Replaced the heater hose tee and restrictor while there. After a couple of heating/cooling cycles, added coolant to the expansion tank so it is higher than the COLD mark on it by one inch.
The heat did come back for a couple of days... Gone again... The core could get clogged again, but I doubt it. Can there still be some air in the system? Does not it bleed itself after a few heating/cooling cycles?
There’s nothing as permanent as a temporary solution.
1995 Cadillac Fleetwood Brougham 126,XXX miles.