Whining noise on acceleration?

HASSANMAHMOOD

MEMBER
2019 JEEP GRAND CHEROKEE
3.6L
V6
4WD
AUTOMATIC
47,000 MILES

Hello, glad to come back asking for a help, I am having a whining noise that comes on when pressing the gas pedal, I noticed that it comes when the gear is on the 2nd and third shift, and goes on, with subsequent driving, transmission temperature. Is within normal even if under high load, no delays on shifting automatically, but feels some shocks, when shifting from parking to reverse or driving, they are very minor, I hope I can fix any minor issues if any, to overcome major problems. A video of the sound is also attached, thanks a lot.

Video (Click to make bigger)

9 Replies

KEN L

MASTER CERTIFIED MECHANIC
43,468 POSTS

Thanks for the video, it helps. can I ask if the car makes the noise while in park if you rev the engine? I can hear the noise but can't tell if it is coming from the engine or transmission? If the transmission is making the noise it sounds like the transmission filter is clogged up. I would drop the pan and change the filter and fluid. Here is a generic guide to help you step by step with instructions in the diagrams below to show you how to use on your car.

https://www.2carpros.com/articles/how-to-service-an-automatic-transmission

Use only Mopar ZF 8&9 Speed ATF Automatic Transmission Fluid or equivalent. Failure to use the correct fluid may affect the function or performance of your transmission.

Unfortunately, the filter and transmission pan, and filter need to be replaced together. Check out the images (below). Please let us know what happens. Let's try to make sure the noise is coming from the transmission before we begin the repair.

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Monday, May 20th, 2024 AT 1:18 PM

HASSANMAHMOOD

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Sir, thank you for replying, I went to the local dealer, they told me that the transmission and the transfer case both are the isse, and the advised me against replacing the transmission fluid, . But I am still in doubt of that.

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Monday, May 20th, 2024 AT 1:18 PM

KEN L

MASTER CERTIFIED MECHANIC
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What did they say was wrong with it? Also, do you have any warning lights on?

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Monday, May 20th, 2024 AT 1:22 PM

HASSANMAHMOOD

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11 POSTS

Sir, Ibsaw them jacked the car and listened by a stethoscope,
they told me that there is an abnormal sound coming from the turbine, and said it is and overused or an abnormally used transmssion and transfer case, there are no warning lights on.

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Monday, May 20th, 2024 AT 1:25 PM

KEN L

MASTER CERTIFIED MECHANIC
43,468 POSTS

Okay is sounds like it is one of the planetary gear sets in the transfer or transmission I would try to narrow it down instead of just says both are bad which would be pretty remote.

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Tuesday, May 21st, 2024 AT 8:15 AM