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Heater/AC blower not working

Tiny
GCLINE
  • MEMBER
  • 1998 BUICK REGAL
  • 3.8L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 120,000 MILES
The fan switch worked intermittently at first then just on high. I have replaced the resistor and checked all the fuses now it only clicks when put on high. I have read that it can be the ignition switch sometimes. I do not want to just replace parts. What else can I check before doing that? Thanks
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Wednesday, August 8th, 2018 AT 5:58 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,323 POSTS
Hello,

This guide will show you how to check the power and ground of the blower motor to help determine if the problem is the fan motor or something else.

https://www.2carpros.com/articles/blower-fan-motor-works-on-high-speed-only

Here is the blower fan wiring diagrams so you can see how then system works.

Check out the diagrams (below). Please let us know what happens.

Cheers, Ken
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Sunday, August 12th, 2018 AT 12:13 PM

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