1999 Chrysler Sebring Heater fan

Tiny
MROLDFART44
  • MEMBER
  • 1999 CHRYSLER SEBRING
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 145,000 MILES
The fan for the heater only blows on high. How involved is it to repair this problem and what parts may be needed?
Saturday, February 27th, 2010 AT 7:18 AM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,916 POSTS
Do you have the import Sebring like the Avenger, or the domestic Sebring like the Stratus / Cirrus?

In general:

Instead of the simple, reliable switch and lever that worked fine for decades, the engineers have an insane need to hang a complicated computer onto everything now. I hate to see anyone blindly throw parts at a problem in hopes one will stick and fix it, but in this case, you can try a resistor block. It is either under the dash near the fan motor, or it could be under the hood, in the firewall, near the right strut tower. They are about three inches long by an inch and a half wide, and held in with two small bolts. Resistor assemblies have a thermal fuse built in that usually fails when the fan motor bearings become tight. That causes it to draw unusually heavy current.

The best alternative is to come prepared with a test light or voltmeter, then take some measurements to come up with a proper diagnosis before buying a bunch of parts. Otherwise, the next logical choice would be the heating, ventilating, and air conditioning (HVAC) computer.

As for cost: resistor - cheap. Computer - tears and a smoldering wallet!

Caradiodoc
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Sunday, February 28th, 2010 AT 10:35 AM

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