1997 OLDSMOBILE AURORA COOLING FANS

  • Tiny
  • steetor
  • 1997 Oldsmobile Aurora

Engine Cooling problem
1997 Oldsmobile Aurora V8 Front Wheel Drive Automatic 127000 miles

engine cooling fans only start when AC on

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Monday, November 1st, 2010 AT 1:35 PM

7 Replies

  • Tiny
  • JDL
  • Expert
  • 16,289 posts

What is the temp gage reading, sometimes it takes a while for the coolant temp to get up there. Yes, the fan will run if ac is turned on. Does the engine reach normal operating temp?

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Monday, November 1st, 2010 AT 1:47 PM
  • Tiny
  • steetor
  • Member

Yes, it reaches normal temp and beyond

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Monday, November 1st, 2010 AT 3:14 PM
  • Tiny
  • JDL
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What is the temp gage reading? Any applicable trouble codes?

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Monday, November 1st, 2010 AT 3:21 PM
  • Tiny
  • steetor
  • Member

It has reached 240, then I turn on the AC so fans turn on. Shouldn't fans turn on about 220? Is it a relay problem? Where is high speed relay located?

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Monday, November 1st, 2010 AT 4:09 PM
  • Tiny
  • JDL
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My info says around 230. The coolant temp sensor could cause an issue? I can't be certain if the sensor is faulty. How many fans do you have? If more than one, do all the fans turn on?

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Monday, November 1st, 2010 AT 4:15 PM
  • Tiny
  • steetor
  • Member

There are 2 fans. Both turn-on when AC is engaged. The temp guage shows temp increase, so temp probe seems OK. Where is temp sensor located? Where are cooling fans relays located?

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Monday, November 1st, 2010 AT 5:12 PM
  • Tiny
  • JDL
  • Expert
  • 16,289 posts

The fan relay locations are in the diagram. I might have to use an infra-red noncontact thermomter to see if engine temp and gage show about the same? The coolant temp sensor is circle c in the diagram.


http://www.2carpros.com/forum/automotive_pictures/170934_aurora_cts_1.jpg




http://www.2carpros.com/forum/automotive_pictures/170934_aurora_fan_relay_1.jpg

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Monday, November 1st, 2010 AT 5:40 PM

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