2005 Dodge Caravan interior heat

2005 DODGE CARAVAN
100,000 MILES • 6 CYL • 2WD • AUTOMATIC
Avatar
MIKEWOY
  • MEMBER
  • 2 POSTS
The vehicle puts out real good heat while driving, but the heat changes to cold as the RPMs drop such as sitting at a stop light.
Oct 6, 2010 at 4:38 PM
Advertisement
Avatar
JACOBANDNICKOLAS
  • CAR REPAIR CONTRIBUTOR
  • 110,190 POSTS
Is the cooling system full of coolant?
Oct 7, 2010 at 7:18 AM
Avatar
MIKEWOY
  • MEMBER
  • 2 POSTS
Yes, the fluids are all topped off
Oct 7, 2010 at 8:34 AM
Avatar
JACOBANDNICKOLAS
  • CAR REPAIR CONTRIBUTOR
  • 110,190 POSTS
It has one of a few things. Either the blend air door isn't working properly, the engine isn't fully warming up, the heater core is partially plugged, or (worst case) there is a head gasket problem. However, I would think you would notice a coolant loss, or air would be getting into the system.

If you start the engine, turn the heater on, and let the engine warm up, do both heater core hoses get hot at an idle or does one side get much hotter than the other?
Oct 7, 2010 at 9:31 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.