Mechanical Whining Sound - Toyota FJ Cruiser Forum
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post #1 of 14 (permalink) Old 04-06-2018, 06:52 AM Thread Starter
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Question Mechanical Whining Sound

Hello, all.

I recently had the auto transmission rebuilt in my 07 FJ. Since then I have noticed a whining sound that becomes more audible as the RPMs climb (didn't notice sound before). Could this be a symptom of something from the rebuild? Or am I now just hyper sensitive to sounds and it is just a pulley or something?

Input or advice is appreciated.
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post #2 of 14 (permalink) Old 04-06-2018, 07:14 AM
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Re: Mechanical Whining Sound

I guess Ill ask the obvious question - enough fluid in the transmission?
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post #3 of 14 (permalink) Old 04-06-2018, 07:18 AM
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Re: Mechanical Whining Sound

Is it possible to shoot a short video where the sound can be heard? Maybe some of the more mechanical members may be able to give you some guidance if they can hear it.


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post #4 of 14 (permalink) Old 04-06-2018, 07:30 AM
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Re: Mechanical Whining Sound

I would guess idler pulley. Having replaced them multiple times, I can tell you that it does sound like a mechanical whining sound sometimes when they go bad. It is usually the pulley next to the alternator that is the culprit. I would start the search there.

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post #5 of 14 (permalink) Old 04-06-2018, 07:36 AM Thread Starter
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Re: Mechanical Whining Sound

Thanks for the responses so far!
@mikey - One would assume the shop filled the trans with the proper amount of fluid. But,we all know what happens when you assume...
@FatJohnson - I can try at lunch today. Hopefully my phone can pick it up.
@IRV ingzisman- I came across that in some searching I did- could be. It sounds more toward the back end of the motor/trans area but its hard to pinpoint the sound while driving since, ya know, trying to watch the road and all that.
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post #6 of 14 (permalink) Old 04-06-2018, 07:40 AM
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Re: Mechanical Whining Sound

Quote:
DaDirtWolf previously said: View Post
Thanks for the responses so far!
@mikey - One would assume the shop filled the trans with the proper amount of fluid. But,we all know what happens when you assume...
@FatJohnson - I can try at lunch today. Hopefully my phone can pick it up.
@IRV ingzisman- I came across that in some searching I did- could be. It sounds more toward the back end of the motor/trans area but its hard to pinpoint the sound while driving since, ya know, trying to watch the road and all that.
I had an idler pulley that was making that sound and I though for sure it was either the trans or transfer case. Eventually I narrowed it down to under the hood. With the vehicle in park, rev the engine. If you can still hear it, then its most likely the pulley. The pulleys are only about $17 on rock auto, so hopefully thats all it is.

"Those who cannot remember the past are condemned to repeat it." - George Santayana
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post #7 of 14 (permalink) Old 04-06-2018, 07:43 AM Thread Starter
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Re: Mechanical Whining Sound

Quote:
Irving Zisman previously said: View Post
I had an idler pulley that was making that sound and I though for sure it was either the trans or transfer case. Eventually I narrowed it down to under the hood. With the vehicle in park, rev the engine. If you can still hear it, then its most likely the pulley. The pulleys are only about $17 on rock auto, so hopefully thats all it is.
Ah, good call. I'll try that.
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post #8 of 14 (permalink) Old 04-06-2018, 10:46 AM Thread Starter
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Re: Mechanical Whining Sound

Doesn't make noise until I put it into Drive..
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post #9 of 14 (permalink) Old 04-06-2018, 10:51 AM
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Re: Mechanical Whining Sound

I would take the others suggestions and check the trans fluid level.
Here is a .pdf on how to do it.

https://www.fjcruiserforums.com/forum...-procedure.pdf

And that sucks. I was really hoping it would have been something easy like a pulley

Good luck

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Last edited by Irving Zisman; 04-06-2018 at 10:55 AM.
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post #10 of 14 (permalink) Old 04-06-2018, 11:10 AM Thread Starter
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Re: Mechanical Whining Sound

Quote:
Irving Zisman previously said: View Post
I would take the others suggestions and check the trans fluid level.
Here is a .pdf on how to do it.

https://www.fjcruiserforums.com/forum...-procedure.pdf

And that sucks. I was really hoping it would have been something easy like a pulley

Good luck
You and me both. Guess it's time to check fluid levels. Would be quite disappointing to find low fluid after just getting it back from the shop.
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