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1999 Buick Regal no cooling fans no AC

Tiny
TCOB
  • MEMBER
  • 1999 BUICK REGAL
  • 3.8L
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 140,000 MILES
Checked all fuses and relays replaced coolant temp sw gets hot when sitting in traffic turn heat on till cools down car runs great otherwise anyone have any ideas
Monday, June 2nd, 2014 AT 5:50 PM

5 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 POSTS
If everything checked out, have you checked the fan motors for operation?
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Monday, June 2nd, 2014 AT 6:03 PM
Tiny
TCOB
  • MEMBER
  • 19 POSTS
Yes at the relays when in or out tested with test light fan closest to driver side will come on hi I think.I unplugged fan harness at fans and ran a set of jumper wires to each fan and they both work. AC does not do anything have not tested it either.
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Monday, June 2nd, 2014 AT 6:27 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 POSTS
If everything is good, that only leaves the PCM.
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Tuesday, June 3rd, 2014 AT 4:34 AM
Tiny
TCOB
  • MEMBER
  • 19 POSTS
Thank you! But I installed a automatic fully adjustable thermostatic electric fan control for $27 and some change from Rockauto. Com they have just about everything even came with instructions. But seriously TY I had a feeling it was going to lead to PCM and you helped be sure, one of those wood have seat me back $175.00 so thanks again!
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+1
Monday, June 9th, 2014 AT 6:07 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 POSTS
Is everything working properly now?
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Monday, June 9th, 2014 AT 7:21 PM

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