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Belt squeaking when slowing down

Tiny
FAHAD ANWAR
  • MEMBER
  • 2012 DAIHATSU MOVE
  • 0.6L
  • 3 CYL
  • 2WD
  • AUTOMATIC
  • 133,000 MILES
Hi,

My car belt squeaks only when I apply brakes to slow down speed. It squeaks and when I apply a little acceleration it stops means when I apply brakes 800 RPM's. Then apply acceleration to 900 RPM's it stops squeaking. I am adding a video I guess it will help me out. And yeah I installed a new water pump pulley and new belts two times. Problems solved for three months then came back again.
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Monday, December 21st, 2020 AT 11:53 AM

4 Replies

Tiny
FAHAD ANWAR
  • MEMBER
  • 10 POSTS
Hey, I just turned headlights on high beam and blower on full (A/C off) and then belts starts squeaking. Could you guide please? I suspect that alternator connection is bad/corroded or alternator is going bad. Can you please suggest any diagnosis?
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Monday, December 21st, 2020 AT 1:03 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
Hi,

Since it got worse with the added electrical load, that leads me to believe the alternator belt is loose. I don't have specific technical information on this vehicle because it isn't offered in the US, but that is the most likely cause.

Try tightening the alternator belt and let me know if the sound goes away. Also, while watching your video, it appears that the water pump pulley is moving around as if there is a bearing issue. Please check the pulley for tightness and make sure there isn't any play in the pump shaft. One other thought, make sure there is no coolant leaking from the pump and getting onto the belt.

I attached a pic from your video and circled the pulley I'm referring to.

Also, here is a link you may find of interest. Take a look through it and see if anything helps.

https://www.2carpros.com/articles/car-squeaking-noise

Again, I suspect the alternator belt is loose. Check that and let me know the results.

Take care,
Joe
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Monday, December 21st, 2020 AT 9:18 PM
Tiny
FAHAD ANWAR
  • MEMBER
  • 10 POSTS
Water pump pulley is brand new, I believe it's only runs 4000km. I also suspect noticed that moving but its not bad I will tight the but and will tell you.
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Tuesday, December 22nd, 2020 AT 11:36 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
Hi,

Let me know what happens. Also, check to make sure there isn't excessive play in the pulley. The way it is moving may be the problem.

Let me know.
Joe
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Tuesday, December 22nd, 2020 AT 9:06 PM

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