Squealing Help!

Hey guys,

I started having some squealing noises from under the hood last year. I changed the belt and the noise went away. However it came back a few weeks ago. So I changed the tensioner and idler pulley's, but still it squeals sometimes..

Any thoughts?

 

I know that the 2007 Tundra had drive belt and tensioner pulley noise issues and Toyota issued a TSB. My Tundra had the TSB done in 08 according to my records. A new , improved tensioner pulley and drive belt were used. I would think that you used new parts so they are probably up to snuff. Like Sean said, a good video with decent sound would help.

 

Mhmm I keep getting an error when I load the video. Says bad extension.

 

https://www.youtube.com/watch?v=XaE2K6ElIjM

Video Link

 

It seems to make the noise at all temps, but sometimes there is no noise... Majority of the time the noise is there though. Wouldnt imagine it could be the belt again since i changed it last year..

 

Any chance you can narrow down the location of the sequel? A little shot of WD-40 on the pulley may help locate the origin of the noise. But WD40 or any oil on the belt will not fix it. it could ruin it, you could try a little bar soap? This wont fix the problem just identify the source...
You probably already know all this but... Belts usually slip because they are worn out (but you said you changed it- rule that out), belt does not have the proper tension, or the pulley(s) the belt is moving over could be bad/going bad. Let us know what you find. Others will chime in as well.

 

Also, if you didn't clean off the pulleys during the belt change.... next time use a clean rag with isopropyl alcohol and clean pulley grooves, get the crap off of them.

 

Thanks guys, I will try this weekend to get it solved.

 

Since I have already changed the pulleys I am going to try a different belt, maybe a gatorback like in the video above.

 

I have 15 Tundra and notice a noise when acceleration. It's a high pitch noise like slippy. It's seem to be a chime or squeak when I step on the gas. I replace the tension pulley, idler pulley, fan bracket and and fan pulley. The truck has the noise since day one but many Toyota dealer refuse to acknowledge the issue. I finally consider the belt is having alignment issue. Anyone have the same issue please let me know how to fix it.

 

hey bro did you ever figure out your squeak? i I listened to your video and im having your exact same problem. ive replaced tensioners and idlers and stupid squeak is still there.

 

I replace the belt last spring. Now the noise coming back again in wintertime. I think it’s a misaligned noise. I might get oem belt or gaterback quiet belt and see how long that will last. I feel like it’s the alternator or the AC compression pulley that make the noise. But I’m struggle to pin point which pulley make noise. I just ignore and keep driving like no noise.

 

its a metal to metal sound so i dont know that the belt will fix the issue. whats weird is that the sound comes and goes. low enough to ignore but then there are days when it gets pretty loud and embarrassing. who knows. ill post up if i i figure something out. thanks for the response man.

 

Cooling fan pully bracket and or fan clutch if you replaced everything else I have the same issue.. awaiting parts they are cheap

 

+1

 

LMAO…..didn’t even see the date

 

Yes its 6 years late... but rather than keep the info to my self id rather share it on this thread so that it can possibly help someone like my self who has this issue now in 2021 or in the future

 

I was just about to resurrect this thread as well and ask if anyone figured out the problem. I need to start diagnosis on mine with a similar noise but haven't had a chance to work on it yet.

 

Take the serpentine belt off and start spinning stuff by hand. One will be unlike the others.

 

Good call. First I'll probably run it without the belt to see if it's even any of those accessories.

 

Mine usually squeals at startup but stops as soon as fan clutch engages. I have sprayed a small amount of lube into where the fan clutch seems to be and this seems to stop it for a couple days but then it starts again .
I have a new belt and new alternator but it has been doing this since before replacing those parts and it's still does it after and when the belt was off all pulleys turned without issue.
Is it expensive to replace the electric fan clutch?

 

Also on mine while its squealing before fan kicks in... if you turn the wheel either ways it changes the noise significantly.
Having the air setting going to the window as opposed to say going to the floor seems to make it more likely to squeal at startup as well.
A mechanic told me when starting up with defrost(window) air on the vehicle may automatically kick in the air conditioner as a safety thing as it thinks your window may be fogged up. But this still isnt a fix..