Belt noise after MI pulley? - Page 2 - Toyota Yaris Forums

CTScott · 11-28-2012, 11:40 PM

Quote:

Originally Posted by DJYojimbo

How many ft lbs is it supposed to be?

There isn't a torque measurement for a belt, but rather a deflection and a tension measurement. They point to check is half way between the alternator and the crank pulley.

Deflection:
New belt 7.0 to 8.5 mm (0.28 to 0.33 in)
Used belt 11 to 13 mm (0.43 to 0.51 in)

Tension:
New belt 539 to 637 N (55 to 65 kg, 121 to 143 ld)
Used belt 245 to 392 N (25 to 40 kg, 55 to 88 ld)

frownonfun · 11-28-2012, 11:42 PM

when i had a loose belt it sounded like there was a pig being slaughtered under my hood. so idk, that doesn't sound so much like a loose belt to me. then again if CT says it does maybe you should listen to him.

frownonfun · 11-28-2012, 11:47 PM

Quote:

Originally Posted by CTScott

There isn't a torque measurement for a belt, but rather a deflection and a tension measurement. They point to check is half way between the alternator and the crank pulley.

Deflection:
New belt 7.0 to 8.5 mm (0.28 to 0.33 in)
Used belt 11 to 13 mm (0.43 to 0.51 in)

Tension:
New belt 539 to 637 N (55 to 65 kg, 121 to 143 ld)
Used belt 245 to 392 N (25 to 40 kg, 55 to 88 ld)

Yeah it's funny I called my service dept to ask them if they can measure the deflection for me and they said there's no way to measure it. They also said that because there's no tensioner that I wouldn't need to worry, it will tighten itself. I seriously wonder if I should be letting these people do my oil changes, even if it is free.

Golddeenoh · 11-29-2012, 11:46 AM

I assume you have already checked to make sure that the belt isn't bottoming out in the groves on the pulleys, that there is not any debris in the pulley groves, and that the pulleys are aligned?

Captain Slow · 11-29-2012, 02:36 PM

nope. haven't popped the hood at all. been too busy and it's cold.

figured I'd ask if this was normal before I started poking around. I used to be under a car 5 days a week swapping trannys, replacing front ends, etc... but these days I am not a big fan of doing work myself anymore, lol.

Captain Slow · 02-03-2013, 02:59 PM

hey guys, sorry it took me so long to reply to this topic, I've just been busy.

here is a wav file of the sound, about halfway through the idle drops and you can hear it even better. keep in mind that this was taken with the hood closed standing next to the car, not with the recorder in the engine bay.

think it may be time for a new belt or at least a retension on this one? It doesn't do it when I first crank up in the morning but starts 2-3 minutes later (I'm guessing as the belt heats up it expands).

Does the Yaris have automatic tensioners or is it something adjustable? Thanks.

FILE
http://www.filedropper.com/beltnoise

malibuguy · 02-03-2013, 04:49 PM

i had a bad squeal initially. new belt fixed that. now...after about 10,000miles or so...it does a tiny squeak on start up. I looked at the belt, its looks worse then it should for its age. im going to tighten it up a tiny bit more the next time i get a chance.

Black_griffin6 · 02-13-2013, 08:47 AM

I've been having this same noise. It only happens when I drive the car for a while, and it doesn't happen when you first start the car up.

Captain Slow · 02-13-2013, 09:21 AM

^exactly, and it's annoying as hell.

Yarflana · 02-15-2013, 11:43 AM

Back to the audible vs. inaudible noise question...I believe inaudible would be that you cannot hear it over the ambient noise of the normal running of the engine; audible would be you can and seems to be what Mr. Slow is referring to. We expect noise, but when the standard deviation becomes too great, we hear the unexpected...thus, the audible.

Captain Slow · 02-15-2013, 08:26 PM

Just listen to the wav file I attached in an earlier post.

why? · 02-15-2013, 09:53 PM

the file in the earlier post is not normal. the filedropper link just goes to the main page, not to a file i can use.

i'd agree with CTScott. I have a full nst pulley set, and after tightening all the belts, i have zero extra noise that sounds anything like that. There is a chance the belt might be too tight as well, but that is a belt noise of some type.

DJYojimbo · 03-25-2013, 07:00 PM

still having issues with the pulley?

TOLMACH · 03-27-2013, 09:20 PM

Good video, helps figure out whether the issue is the tensioning or misalignment

I remember couple other videos recommending the same @water test@ to diagnose the weird noise.

http://www.youtube.com/watch?v=xSs75E9wdzk

catliektheif · 07-31-2013, 03:00 PM

@captainslow I'm having the same exact noise after the MI pulley and its driving me INSANE. Did you find a fix?

yougojay · 07-31-2013, 03:11 PM

Quote:

Originally Posted by tooter

My wife says I have selective hearing.

What...?

11-28-2012, 11:42 PM	#20
frownonfun View User's Garage Drives: 09 Yaris HB, 08 SR5 Tundra Join Date: Jan 2009 Location: RGV, Texas Posts: 1,086	when i had a loose belt it sounded like there was a pig being slaughtered under my hood. so idk, that doesn't sound so much like a loose belt to me. then again if CT says it does maybe you should listen to him. __________________ I crush you like tiny clown car, because you are clown, yes?

11-29-2012, 11:46 AM	#22
Golddeenoh Takes corners too fast! View User's Garage Drives: Absolute Red 2009 Yaris HB Join Date: Apr 2012 Location: Columbia, SC Posts: 830	I assume you have already checked to make sure that the belt isn't bottoming out in the groves on the pulleys, that there is not any debris in the pulley groves, and that the pulleys are aligned? __________________ mods:15''Drag DR21 w/Nitto NeoGen 205/50R15, Tanabe DF210 lowering springs 1.6/1.8, TRD Rear Sway Bar, Tanabe Front Sway Bar, Micro Image Short Throw Shift Kit (both in and under), 8.64lbs flywheel, F1 Stage 4 Clutch, AEM Cold Air Intake (Red), Megan Racing Header, DC Sports Axle Back Exhaust, Micro Image Crank Pulley, NST lite Alternator Pulley, ARP Manifold Stud Kit,Tanabe Front Strut Tower Brace, ScanGuage II, Micro Image Silicone Radiator Hose Kit (Red), NRG Carbon Fiber Shift Knob (round), 2009-2011 Toyota Yaris Liftback Foglight kit, NRG Grounding Kit (Red), Hella Horns(Red),CF Hood

11-29-2012, 02:36 PM	#23
Captain Slow My Face Is Ridiculous View User's Garage Drives: 2010 Toyota Yaris 3dr LB Join Date: Dec 2011 Location: Scott, LA Posts: 456	nope. haven't popped the hood at all. been too busy and it's cold. figured I'd ask if this was normal before I started poking around. I used to be under a car 5 days a week swapping trannys, replacing front ends, etc... but these days I am not a big fan of doing work myself anymore, lol. __________________ {Buy my book - It Came From Tomorrow}

02-03-2013, 02:59 PM	#24
Captain Slow My Face Is Ridiculous View User's Garage Drives: 2010 Toyota Yaris 3dr LB Join Date: Dec 2011 Location: Scott, LA Posts: 456	hey guys, sorry it took me so long to reply to this topic, I've just been busy. here is a wav file of the sound, about halfway through the idle drops and you can hear it even better. keep in mind that this was taken with the hood closed standing next to the car, not with the recorder in the engine bay. think it may be time for a new belt or at least a retension on this one? It doesn't do it when I first crank up in the morning but starts 2-3 minutes later (I'm guessing as the belt heats up it expands). Does the Yaris have automatic tensioners or is it something adjustable? Thanks. FILE http://www.filedropper.com/beltnoise __________________ {Buy my book - It Came From Tomorrow}

02-03-2013, 04:49 PM	#25
malibuguy Obsessed with 1.5L Drives: '10 PW Yaris Sedan Join Date: Feb 2011 Location: Westminster, MD Posts: 908	i had a bad squeal initially. new belt fixed that. now...after about 10,000miles or so...it does a tiny squeak on start up. I looked at the belt, its looks worse then it should for its age. im going to tighten it up a tiny bit more the next time i get a chance. __________________ -Greg...the Exhaust Freak. -10 PW sedan 107whp/110wtq, full exhaust, suspension bits, TRD LSD -06 Highlander 3mzfe Limited AWD -82 Malibu, 1uzfe swap -97 Tercel coupe, 1nzfe/4.31 -96 Tercel coupe, Turbo 5efe, autoX -96 Tercel 4dr

02-13-2013, 08:47 AM	#26
Black_griffin6 View User's Garage Drives: 09 Meteoric Metallic 3 door HB Join Date: Jul 2010 Location: Atlanta Georgia Posts: 419	I've been having this same noise. It only happens when I drive the car for a while, and it doesn't happen when you first start the car up.

02-13-2013, 09:21 AM	#27
Captain Slow My Face Is Ridiculous View User's Garage Drives: 2010 Toyota Yaris 3dr LB Join Date: Dec 2011 Location: Scott, LA Posts: 456	^exactly, and it's annoying as hell. __________________ {Buy my book - It Came From Tomorrow}

02-15-2013, 11:43 AM	#28
Yarflana View User's Garage Drives: 2008 Base Model Join Date: Jan 2013 Location: TX Posts: 255	Back to the audible vs. inaudible noise question...I believe inaudible would be that you cannot hear it over the ambient noise of the normal running of the engine; audible would be you can and seems to be what Mr. Slow is referring to. We expect noise, but when the standard deviation becomes too great, we hear the unexpected...thus, the audible.

02-15-2013, 08:26 PM	#29
Captain Slow My Face Is Ridiculous View User's Garage Drives: 2010 Toyota Yaris 3dr LB Join Date: Dec 2011 Location: Scott, LA Posts: 456	Just listen to the wav file I attached in an earlier post. __________________ {Buy my book - It Came From Tomorrow}

02-15-2013, 09:53 PM	#30
why? Only Happy When it Rains View User's Garage Drives: Yaris LB Join Date: Jan 2006 Location: harnett county NC Posts: 4,097	the file in the earlier post is not normal. the filedropper link just goes to the main page, not to a file i can use. i'd agree with CTScott. I have a full nst pulley set, and after tightening all the belts, i have zero extra noise that sounds anything like that. There is a chance the belt might be too tight as well, but that is a belt noise of some type. __________________ Colin Chapman disciple

03-25-2013, 07:00 PM	#31
DJYojimbo Drives: 2012 Grey Toyota Yaris SE Join Date: Dec 2011 Location: Chicago Posts: 261	still having issues with the pulley?

03-27-2013, 09:20 PM	#32
TOLMACH Drives: soarer Join Date: Feb 2011 Location: Beautiful British Columbia Posts: 954	Good video, helps figure out whether the issue is the tensioning or misalignment I remember couple other videos recommending the same @water test@ to diagnose the weird noise. http://www.youtube.com/watch?v=xSs75E9wdzk

07-31-2013, 03:00 PM	#33
catliektheif Drives: 2010 5 Door Join Date: Feb 2011 Location: Leesburg, VA Posts: 272	@captainslow I'm having the same exact noise after the MI pulley and its driving me INSANE. Did you find a fix? __________________ lol okay

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