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-   -   Driveline squeal: need help to diagnose (http://www.jeepgarage.org/f181/driveline-squeal-need-help-to-diagnose-62744.html)

ahamay115 07-12-2013 12:57 PM

Driveline squeal: need help to diagnose
 
Hey guys I need some help determining what this squeal could be.

I'm hoping to upload a video to this post (this is my first time adding a video and using the mobile app so this could be a total disaster :/ )



Anyways, if the video comes in, I am sitting in the car with my foot on the brake and shifting from drive to reverse. The squeal was picked up pretty well by my phone.

I appreciate everyone's help in advance!!

This noise is driving me crazy!!

Thanks!!

ahamay115 07-12-2013 01:49 PM

Re: Driveline squeal: need help to diagnose
 
I finally figured out how to embed a video!!! LOL!

Again, the vehicle is not moving at all, just changing gears from drive to reverse and back and forth again.

I originally thought it was a power steering pump, but that no longer makes any sense and the noise is definitely coming from below the vehicle.

Thanks again!
-Chris

ahamay115 07-12-2013 05:17 PM

Bump... anyone have any thoughts on this??

dr.lee.baugh 07-12-2013 05:21 PM

Re: Driveline squeal: need help to diagnose
 
It's hard to tell over the internet, but I would start by looking at the condition of the front differential mounts (or try to see if the noise is coming from that far up). Usually they clunk when they fail, but maybe yours is special.

Other than that, I would guess something internal to the transmission, and likely expensive to fix...

ahamay115 07-13-2013 09:42 AM

Re: Driveline squeal: need help to diagnose
 
Thanks for the response.

Today I jacked up the front end and check everything underneath and I cannot find anything that appears to be loose. I removed the front skid plate and had my wife shift the Jeep into drive and reverse. I can observe movement in the front axle, but I am not sure if this is normal or excessive movement.

Please take a look at this video and let me know what you think. Of course the high pitch squeal that I am ultimately trying to track down was not present during this video, but I am going to leave the front skid plate off and drive the Jeep around today and see what I can observe.



Again thank you all for your help in this issue!!

-Chris

ahamay115 07-26-2013 06:47 PM

Small update, I've noticed that the noise heard in my first video, the one I am trying to diagnose, is most often heard when the jeep is not moving. This has me a bit confused, due to the fact that if it were the differential mounts, they wouldn't really be moving/flexing at a standstill, would they?

Also, to this point, when the jeep is not moving, neither should any of the components in the driveline, correct? Only the engine would have moving components at that point, I believe.

Please comment if anyone has any other thoughts or if you can follow my jibber jabber.

Thanks guys!
-Chris

2005JGC 07-26-2013 11:35 PM

Re: Driveline squeal: need help to diagnose
 
Check the condition of your transmission fluid and give it a smell... smell for hot, burnt smell, sometimes it smells very electronic like an overheated electrical component. It should be redish with no contamination.

Does it make the noise sitting in drive or reverse or ONLY when engaging drive or reverse? does it make the noise when your coming up to a stop and the vehicle shifts back into first?

If it is ONLY when shifting into drive and reverse that would make me think something internal to the trans, maybe transfer case or a engine/trans mount. its difficult to say as stated without being there to actually isolate where the noise is coming from. It does sound like something unhappy though!

For the diff movement, its really hard to say with the phone moving around it makes it really hard to gauge how much the diff is actually moving, that said it is not excessive, there may be some bushing wear on those diff isolator bushings.

Boomer914 08-05-2013 09:58 AM

Re: Driveline squeal: need help to diagnose
 
torque convertors like to make that noise when they go bad. usually its a whine but can definitely turn it a grinding noise which is usually constant as well.


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