2003 Dodge Ram Heat Issues

2003 DODGE RAM
50,000 MILES • V8 • 2WD • AUTOMATIC
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THOP
  • MEMBER
  • 1 POST
The heat inside the cabin of my truck comes out just barely warm from the driver's side vent and cold out of the passenger side vents. What could be causing this problem? I've already had my heater core blown out and a coolant system flush and neither has worked. Help, please
Dec 1, 2007 at 11:02 AM
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.
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MERLIN2021
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 17,250 POSTS
Let's say for the sake of arguement, the core is ok, which just because it was blown out, may have worked, then it's possible that the temperature blend door is stuck. The shaft it swings on is metal, and over time they tend to rust and binde up, operated the temp knob while you look for or feel for the actuator that moves that door, some actuators ar vacuum operated, some electrical. Either these motors, called servo motors can go bad or the above mentioned issue! If the shaft is frozen, try a small drill bit at the base of the shaft, drill thru the plastic and spray some white lithium grease in there, if you can move it by hand, so much the better! Work it back and forth till it moves freely!
Dec 1, 2007 at 11:48 AM
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