Little to no heat?

Tiny
MICHAEL COSTELLO
  • MEMBER
  • 2002 JEEP LIBERTY
  • 2.4L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 83,000 MILES
My temperature gage goes halfway acts like it opens up correctly but I get Luke warm heat and it never gets any hotter?
Monday, January 9th, 2023 AT 8:15 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
Hi,

There is a chance the heater core is partially plugged or there is an issue with the blend air door not fully opening.

Do this and let me know what you find. First, confirm the engine coolant is full when the engine is cold.

Next, start the engine and turn the heater on high. Allow the engine to reach operating temperature and then turn it off. Under the hood, locate the two heater hoses at the firewall that attach to the heater core. Feel them. Both should be hot. One could be slightly cooler simply because it is the return, but if there is a big difference, we need to try flushing the heater core.

Also, I need to know if this is a 4 cylinder or a 6 cylinder. You indicate both above. LOL

Take care,

joe
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Tuesday, January 10th, 2023 AT 8:26 PM

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