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1991 Oldsmobile Ciera Cooling fan still wont run

Tiny
DEADHEAD11
  • MEMBER
  • 1991 OLDSMOBILE CIERA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 95,100 MILES
The cooling fan wont kick on. I hooked motor to battery and the fan kicked on fine. I replaced the temperature sensor and the relays. And still the fan wont kick on. I do not know what else to try. Getting very nervous with these hot days approaching. Thanks for any help
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Sunday, July 4th, 2010 AT 4:10 PM

1 Reply

Tiny
INTERNETMECHANIC
  • MECHANIC
  • 700 POSTS
If you unplug the cts and turn key on, does the fan run? Are there any applicable trouble codes? If you turn on the ac, does the fan run. On some makes and models when you use jumper wire to access codes, the fan will run. Voltage to the load side of relay, is hot all the time. Voltage to the coil side of relay, goes hot when you turn on the key.

Next, I'd have to check circuits at the fan relay.


https://www.2carpros.com/forum/automotive_pictures/512072_33_fan_relay_1.jpg

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Sunday, July 4th, 2010 AT 4:22 PM

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