Heater Problems

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Dec 14, 2013 | 12:57 PM

keeblerkesler

Thread Starter

Newbie

Joined: Dec 2013

Posts: 8

Likes: 0

Model: Cherokee

Heater Problems

I have a 2001 Jeep Grand Cherokee Laredo 2wd with 4.0. The heat will only get hot hot if I am pushing the gas pedal. If I let off of it it cools down. I have flushed the heater core and changed the thermostat already... any ideas. My heater core is not leaking.

Dec 15, 2013 | 05:54 PM

dave1123

Old fart with a wrench

Joined: Nov 2010

Posts: 14,398

Likes: 740

From: Manlius, east of Syracuse, NY

Year: 2000 XJ Sport & WJ Laredo

Model: Grand Cherokee (WJ)

Engine: 4.0L

It probably has something to do with vacuum. Water flow thru the heater shouldn't be related to throttle settings. I've been told my WJ is unusual because my heater's blend door is still working at 145K. I do have an intake door problem however. The heater leaks heat when shut off. Not nice in the summer because my A/C doesn't work!

Last edited by dave1123; Dec 15, 2013 at 05:57 PM.