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Heater fan just works on high?

Tiny
SAFARY98
  • MEMBER
  • 2002 DODGE CARAVAN
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 109,000 MILES
My heater fan just works in high and not low speed only, I am not sure this problem is because the relay is failing. Tell me is this true? And where is located the relay?
Tuesday, November 25th, 2008 AT 9:06 PM

1 Reply

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

It sounds like you have a faulty blower motor resistor.
On the blower motor resistor it has several pins for different pins. And overtime the contacts tend to ware of and the fan will only work on one speed and not the other.

The resistor is mounted on the blower motor, inside the dash. Behind the glove box.

https://youtu.be/_bxGOmHB15A

https://youtu.be/S7hsTkP6LBI

I have attached diagrams for your reference.

Please let me know of any questions.

Thank you.
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Monday, August 23rd, 2021 AT 3:03 PM

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