Transmission noise

Tiny
SJPANKO
  • MEMBER
  • 2003 SATURN L100
  • 2WD
  • AUTOMATIC
  • 149,000 MILES
The more I accelerate the louder the noise gets. This is the only problem with transmission. It started after I had the rotors and brake pads replaced. It's not slipping or slow to accelerate. It has never overheated it has no leaks. I had a mechanic look at my car and was told the humming was coming from the transmission. I am not convinced it's a transmission problem.
Wednesday, April 27th, 2022 AT 5:35 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,055 POSTS
Hi,

If it started with the brake work, that is where I would be checking. Is the sound noticeable when the vehicle is stopped? Can you hear it in neutral or park? When applying the brakes or making turns, change the pitch or sound in any way?

Do me a favor. If it is loud enough, record it and upload it for me to hear.

I will watch for your reply.

Joe
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Wednesday, April 27th, 2022 AT 8:44 PM
Tiny
SJPANKO
  • MEMBER
  • 2 POSTS
The only time noise is heard is when the car is in drive and accelerating. The car sounds normal. When I first turn it on and put it in drive the noise becomes louder when I reach 35 MPH and the faster I go the louder the noise. At first, I thought my RPMs were too high by the way it sounded but they are exactly where they should be. The car does not have any normal transmission signs of problems.
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Thursday, April 28th, 2022 AT 11:05 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,055 POSTS
Hi,

Is it loud enough to record and upload for me to hear? Also, since it only is making noise when placed in gear (moving or not), it sounds like it could be related to pressure solenoid, but I really need to hear it.

If that isn't possible, I would suggest scanning the can-bus system. CAN stands for controller area network. Basically, all modules and computers are tied together via a few wires. This type of scan will identify codes regardless of the module it is stored in. Here is a link that shows how it is done.

https://www.2carpros.com/articles/can-scan-controller-area-network-easy

Let me know if this is something you can do or have done for you.

Take care,

Joe
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Thursday, April 28th, 2022 AT 6:14 PM

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