1043569
Thanks for the suggestions, but here is something I forgot. Sometimes when the engine is off, it pulls a vacuum at the heater valve but when the engine is running and the heater is on, it quits. Strange problem, that's why it's so hard to figure out....[addsig]
1044044
I'm not sure if this will help, but when my cherokee made lots of squeeking noises I lubed the swaybar bushings. They caused a majority of all the squeeks when I pushed up and down on the front end and rear end.[addsig]
1043319
The thermostat works, it keeps it real toasty now that I have the heater valve rigged so the hot water always goes through the heater core. Any way to fix this vacuum problem without just bypassing the control unit vacuum switch all together?[addsig]
1043247
I can't get my heat to work. I tested the vacuum line going to the heater valve connected to the heater core and it pulls a vucuum. I figured it was the control unit. I replaced the control unit and it worked when I tested it. Now it doesn't work any more. No vacuum at the heater valve...