2002 Jeep Wrangler no heat

2002 JEEP WRANGLER
121,000 MILES • 6 CYL • 4WD • MANUAL
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KBUSSELL
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  • 1 POST
The vehicle's heater will not warm up.We replaced the thermostat ( 190) and the engine heats up to 210 to 220 on the gauge , but no heat through the vents.The heat control knob does not make any difference no matter how it's turned

The blower and vent control knobs work fine.
Stumped
Any thoughts?.
Mar 1, 2009 at 8:45 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Check the heater core if its clogged-up-if not could be the air mix/blend/mode doors, vacuum and actuators problems to include the HVAC control module
Mar 1, 2009 at 10:52 PM
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