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Cooling fan issue

Tiny
LEE HARVKEY
  • MEMBER
  • 2004 PONTIAC GRAND PRIX
  • 160,000 MILES
My cooling fans will not turn on. I have changed all relays, thermostat, jumped fans and they worked and the temperature sensor. I am at a loss on what to check or why they do not work. Please help.
Tuesday, April 26th, 2016 AT 5:59 AM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check all three relays and see if PCM is sending power to tell relays to engage.

It may be a bad connection in the fuse box to the relays. Try tweaking prongs a tad and put a little dielectric grease on them. A small tube at an auto parts store cost about $2.00.
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Tuesday, April 26th, 2016 AT 8:08 AM

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