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Cooling Fan Question

Tiny
SPJOHN1964
  • MEMBER
  • 1991 HONDA PRELUDE
  • 2.1L
  • 4 CYL
  • FWD
  • MANUAL
  • 160,000 MILES
Cooling fan will engage when engine is cold (even if only started for a couple of minutes) and I noticed sometimes even if the engine was never started. I noticed this when charging the once again dead battery. I am thinking the coolant temp sensor is defective and the fan will run at any time thus killing the battery. Would this just be a defective temp sensor, or could it be a wiring issue?
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Saturday, April 30th, 2016 AT 8:10 PM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
It cold be the switch, relay or the timer unit. See pic and try a relay first.
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Sunday, May 1st, 2016 AT 8:44 AM

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