Electric cooling fan

1998 CADILLAC DEVILLE
120,000 MILES • V8
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PLEWISSR77
  • MEMBER
  • 1 POST
why does the cooling fan only comes on when the ac switch is turned on?
Dec 22, 2010 at 2:28 PM
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JDL
  • ✓ASE Certified Mechanic
  • 16,098 POSTS
  • ASE Certified Mechanic
Any applicable trouble codes? How high does the temp go? I don't believe the radiator fans will even come on till about 220 degrees. The coolant temp sensor could cause an issue? Without more info, hard to tell?
Jun 1, 2020 at 2:38 PM
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