Jeep Garage  - Jeep Forum

Jeep Garage - Jeep Forum (http://www.jeepgarage.org/forums.php)
-   Grand Cherokee - ZJ (http://www.jeepgarage.org/f78/)
-   -   Heater problems. (http://www.jeepgarage.org/f78/heater-problems-47450.html)

jamestaylor47 09-14-2012 12:20 AM

Heater problems.
 
My heater don't work at all. My temp gets up to 150 or so (1/4 of the way) and just stays there. Never gets to 210 like it should. Any ideas?

VistaCruiser 09-14-2012 01:08 PM

Re: Heater problems.
 
You could flush the system to unblock passages. Make sure you have a 190* thermostat. HTH.

Sam

jamestaylor47 09-14-2012 04:24 PM

And it says my coolest sensor is bad? What Is that exactly and where is it located?

VistaCruiser 09-15-2012 08:38 PM

Re: Heater problems.
 
I'm getting trouble code 22 also, if your using the flashing CEL to pull that. It's located near the thermostat housing, but I think there's two sensors there. The sensor that has two wires should be the one we need to replace, since that's supposed to be the one that sends signal to the PCM. The sensor with one wire sends signal to the gauge. HTH.

Sam
E.T.A.-Correction on the above post. The two wire sensor, located behind the thermostat housing, towards drivers side is the sensor that sends signal to PCM.

jamestaylor47 09-16-2012 10:50 AM

Cel?

VistaCruiser 09-16-2012 12:19 PM

Re: Heater problems.
 
Check Engine Light. turn the key on-off about 5 times and the CEL will flash/pause to reveal trouble codes the PCM is throwing. Easy google or haynes/chiltons manual look up.

Sam


All times are GMT -5. The time now is 04:44 AM.

Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community