Making a whining noise when accelerating?

Tiny
CMCCLAMMA
  • MEMBER
  • 1999 JEEP TJ
  • 4.0L
  • 6 CYL
  • 4WD
  • MANUAL
  • 124,000 MILES
Lately my vehicle had been making a whining noise when accelerating. It's noticeable right before I shift from 3rd to 4th, and it continues until I slow down or stop. It also stops when I press the clutch or it's neutral. If I'm parked and I rev up the engine I do not hear it. It doesn't sound like it's coming from the engine but somewhere closer to the middle by the transmission and transfer case.
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Friday, September 2nd, 2022 AT 5:52 AM

3 Replies

Tiny
KEN L
  • ADMIN
It is common for the front input shaft bearing to go out on these cars but to be sure can you please shoot a quick video with your phone so I can hear the noise? That way I can tell for sure what's going on. You can upload it here with your response. Also, I would check the transmission fluid level and change it out if it is dirty. This video will show you how, it is on a different car, but the procedure is the same.

https://youtu.be/WqDixYeqslI

Here is how to remove the transmission and replace the bearing in the images below if after the fluid service the noise is still there. Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.

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Friday, September 2nd, 2022 AT 11:18 AM
Tiny
CMCCLAMMA
  • MEMBER
I thought about the transmission fluid and changed it already. I'm posting 2 videos so you can hear it. It's kind of hard to hear the noise because it is a soft top and also the tires are kind of loud.
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Sunday, September 4th, 2022 AT 7:09 PM
Tiny
KEN L
  • ADMIN
Thanks for the videos. Yep, I hear it, that sounds like a bearing is going out. The transmission must be removed, and the bearings replaced.
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Monday, September 5th, 2022 AT 9:46 AM

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