Cadillac Owners Forum banner
1 - 2 of 2 Posts

· Registered
Joined
·
137 Posts
Discussion Starter · #1 ·
My girlfriend drives a 1991 Fleetwood (FWD, 4.9L). Recently the heater quit working; even with the climate control set at 90 degrees all it blows is cold air. The A/C works fine but the heater had been slowly going out last year; I would like to fix it before winter rolls in. Could the heater core just be plugged? If so whats' the best way to flush it? - THANKS!!
 

· Registered
Joined
·
137 Posts
Discussion Starter · #3 ·
Katshot said:
Yes it could be clogged. Check the heater hoses to be sure. One will be hot, one will be warm probably. If the core is ok, they will both be hot. If it's clogged, a radiator shop is the BEST betbut you can do it with a garden hose if you want. Just be careful, the core is NOT designed to handle the full line pressure that your garden hose and supply, you could rupture the core accidentally.
Thanks, I appreciate your insight Katshot.
 
1 - 2 of 2 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top