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Old 11-04-2017, 09:53 AM   #37
dogsridewith
 
Drives: 2007 2-door hatchback
Join Date: Jul 2016
Location: USAnotCA
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Toyota Yaris serpentine belt tighten tension

Quote:
Originally Posted by Randy_84 View Post
I also have a squealing in my 2010 yaris rs liftback. When i turn the air condition on it squeals for about 25 seconds then stops. If i driving with the a/c on and i have to stop, as I shift the gears down, the squeal returns. Even at times when drive to a spot and then put the car in reverse it squeals. The belt has been changed before, but it still kept the noise. I just want to know if the belt is tensioned, would that solve the problem.....any feedback?
Should have been re-tensioned the first time it squealed for 25 seconds. Or 3 seconds. And if that doesn't solve, then look for driven items seizing up...like A/C compressor. Does it chirp or squeal at startup w/ the A/C off?
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Old 11-06-2017, 05:35 PM   #38
mr_robot
 
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I fixed mine over the weekend. Just loosened both the top and bottom bolts, used a prybar wiith one hand and re-tightened with the other pulling it as hard I could and done.

No more squeaky belt.
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Old 11-07-2017, 09:32 AM   #39
dogsridewith
 
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Serpentine belt tension adjustment Toyota Yaris

Overtightening a serpentine belt destroys driven components and idler bearings.

Last edited by dogsridewith; 11-09-2017 at 08:09 AM.
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Old 11-08-2017, 10:17 AM   #40
Randy_84
 
Drives: 2010 yaris rs manual
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Quote:
Originally Posted by dogsridewith View Post
Should have been re-tensioned the first time it squealed for 25 seconds. Or 3 seconds. And if that doesn't solve, then look for driven items seizing up...like A/C compressor. Does it chirp or squeal at startup w/ the A/C off?
The A/C compressor was change like a year ago. It chirps or squeals occasionally when at startup and when the A/C is turned on it chirps as well. There are times when i startup, leave the car running for 60 seconds and then turn the A/C on and I get no squeal. It is suppose to get look at within the coming weeks, so hopefully i would get the problem fixed.
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Old 11-08-2017, 11:39 AM   #41
mr_robot
 
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Mine has been quite since.
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Old 11-08-2017, 11:55 AM   #42
white89gt
 
Drives: 07 Yaris Hatch
Join Date: Aug 2017
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As soon as I went to the Scion 100 amp alternator, mine has quit squealing. The Scion alternator uses a de-coupler pulley, so I think that has something to do with it.
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Old 11-08-2017, 05:26 PM   #43
06YarisRS
 
Drives: 06 2ZR Turbo Yaris RS
Join Date: Aug 2017
Location: Fredericton, New Brunswick, Canada
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Check out this 'interesting' video...

https://www.youtube.com/watch?v=HRrVMtyIqIY

When I first got my car, it squealed badly, partially because the previous owner put belt dressing on it. I can confirm that delaying ignition does work, at least for belts that squeak when the engine is first started. It did on mine anyway.
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2006 Yaris 5 Door RS 2ZR-FE (2011 Corolla 1.8L) Swapped, Automatic, T-28 Turbocharged (8 psi), HSD MonoPro Coilovers, DIY W/M Injection, custom 3" cold air intake, custom 2.5" exhaust, TRD rear sway bar, Penguin Garage 13mm spacers (rear), custom Civic front lip, full repaint, Android 6.0 7" touchscreen, Rockford Fosgate speakers, tweeters, NVX underseat subwoofer
https://www.instagram.com/2zr_turbo_yarisrs/
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