heat/air getting stuck

Asked by Aug 25, 2015 at 03:53 PM about the 2004 Dodge Ram 1500 SLT Quad Cab LB

Question type: Maintenance & Repair

when I switch from heat to air, or air to heat, it's getting stuck and when it does
switch I hear a thump down in the firewall area

2 Answers

118,215

Possible sticking servo motor or the blend air door is binding on something, eventually it will quit working all together. If you have the digital readout then you can check the codes for a failed or servo overrun.

1 people found this helpful.
5

The mechanism does wear out. Possible vacuum leak too.

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