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Fan for cooling engine

Tiny
JOH
  • MEMBER
  • 1992 TOYOTA COROLLA
  • FWD
Sometimes the fan comes on when you start the engine, a next time when the engine is hot, it should come on, but it won't. What is causing this to happen?
Friday, December 10th, 2010 AT 6:32 PM

5 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check and test the coolant temperature gauge switch and fan relay
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Friday, December 10th, 2010 AT 6:34 PM
Tiny
JOH
  • MEMBER
  • 11 POSTS
I have change both, but the problem is still there. Both are good, because I tried them in another car.
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Monday, December 13th, 2010 AT 11:56 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the fan relay if okay there's a problem with the computer controlled circuit of the fan relay
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Tuesday, December 14th, 2010 AT 2:02 AM
Tiny
JOH
  • MEMBER
  • 11 POSTS
How does the thermoswitch works?
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Monday, December 20th, 2010 AT 3:35 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Its heat calibrated (resistances) its open when cold and when hot the switch closes and transfer power to the fan motor
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Monday, December 20th, 2010 AT 8:58 PM

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