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Erratic fan speed

Tiny
KALIMO
  • MEMBER
  • 2006 PROTON GEN-2
  • 1.6L
  • 4 CYL
  • 2WD
  • MANUAL
  • 180,000 MILES
The fan run in full speed as if the engine is hot and the heat gauge shooting up to the maximum.
Tuesday, August 22nd, 2017 AT 8:37 PM

2 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,256 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
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Wednesday, August 23rd, 2017 AT 11:50 AM
Tiny
STEVE W.
  • MECHANIC
  • 13,414 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.
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Wednesday, August 23rd, 2017 AT 11:38 PM

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