Erratic fan speed

2006 PROTON GEN-2
180,000 MILES • 1.6L • 4 CYL • 2WD • MANUAL
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KALIMO
  • MEMBER
  • 1 POST
The fan run in full speed as if the engine is hot and the heat gauge shooting up to the maximum.
Aug 22, 2017 at 8:37 PM
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STRAILER
  • CAR REPAIR CONTRIBUTOR
  • 54,286 POSTS
This sounds like the engine is overheating causing the cooling fan to act funny. Is the cooling system full of coolant?

Here are some guides to help us find the problem:

https://www.2carpros.com/articles/engine-overheating-or-running-hot

and

https://www.2carpros.com/articles/car-is-leaking-coolant

Please let us know what you find.

Cheers, Ken
Aug 23, 2017 at 11:50 AM
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STEVE W.
  • CAR REPAIR CONTRIBUTOR
  • 15,154 POSTS
It is also possible the engine coolant temperature sensor is bad and it is causing the PCM to think the engine is hot when it is not. If it does this within say a minute of being started or even setting still and just turning on the key I would check the ECT first.
Aug 23, 2017 at 11:38 PM
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