11-10-2003, 10:04 AM
I have problems with my whole system. But since its getting cold I need my heater. When I switch to heat my air does not get cold. It blows fine but I can not hear my heat door open so the air can flow through thr heater core. I have an 86 Elky. Is the heater door controlled by vaccum or wire pull. Any suggestions or advise ti fix this? Thanks
11-10-2003, 12:30 PM
If it's blowing out the floor when you choose the heat mode, then I would check the temperature blend door. It's the one controled by the sliding lever and is cable operated. Remove the glove box and look on top of the heater a/c box.
11-10-2003, 01:15 PM
When you choose the heat mode with the top lever or when you move the bottom lever to hotter?? which one is cable operated or are they both?
11-10-2003, 01:24 PM
the temperature lever is cable operated.
11-10-2003, 03:20 PM
The cable on mine is connected and the door opens and closes. But still no warm air? What now? any ideas?
11-10-2003, 03:37 PM
Low coolant, air in the system, restricted heater hose, retricted heater control valve or restricted heater core.
11-10-2003, 03:38 PM
Heater systems (http://elcaminocentral.com/modules.php?name=NukeWrap&page=articles/heat/hsystems.html&height=3000&width=100%)
11-10-2003, 03:57 PM
Thank you. Very good info i am now armed and dangerous with that much info!
11-11-2003, 07:43 AM
Thank you as well, I will check both. Form that info I have a feeling I have a clogged heater valve and the coolant isnt getting to the heater core.
01-07-2004, 12:58 PM
It was the heater control Valve. The original valve is steel and was corroded and stuck closed. Heater system works great now!! Thanks for all your help. 8)
02-16-2004, 06:45 PM
Thanks for posting what your problem turned out to be. A lot of these posts read like good mystery novels, except we never get to know how they turned out!