The complete automotive resource for buyers, sellers, and owners like you.
Car, Truck and SUV Forums at Roadfly
+ Bentley Forums
+ BMW Forums
+ Cadillac Forums
+ Chevrolet Forums
+ Ferrari Forums
+ Jaguar Forums
+ Lamborghini Forums
+ Lotus Forums
+ Mercedes-Benz Forums
+ Maserati Forums
+ MINI Forums
+ Porsche Forums
+ General Discussion
+ Marketplace Forums
Re: Heater not working - Is this a common problem? (archive)
[ Follow Ups ] [ E30 M3 Message Board ] [ Msg. Board FAQ ]
Posted by Paul Ikeda on April 02, 2001 at 02:06:53:

In Reply to: Heater not working - Is this a common problem? posted by JJS on April 01, 2001 at 21:37:02:


Just bought the car a couple of months ago. It seems that the cable is intact. I am not sure what else to check. The A/C seems to work fine. Thanks in advance. JOE


I will presume your temperature gauge is working and that the cooling system has not been service recently.

If it has, then you just might have air trapped in the heater core. It is vitally important when refilling a drained cooling system to turn on and set the heater on high. This will allow fluid to enter into the heater core and hopefully displace any air. If a recent cooling system service has occured then you will have to burp the system.

A techique I use is to take off the radiator cap and run the engine until you reach operating temperature. If you are lucky you will hear some gurggling at the expansion tank. Be very careful as fuild will bubble out vigoriously.


If the cooling system hasn't been serviced.
Check to see if the heater core has been by passed in the engine bay.

Many people do this to put off repairing a leaking heater core or heater control valve.

Good luck



Follow Ups:


[ Follow Ups ] [ E30 M3 Message Board ] [ Msg. Board FAQ ]
Questions, comments, or problems, please visit the Roadfly help desk.
Roadfly.com Logo © 1997 - 2008 Jump Internet Inc. All rights reserved.