Vibration / wobble at a very slow accelartion

[bobn]

This started after about 8400 miles, car is all stock and is a 2022 Challenger RE.

From about 30 mph though 80 mph. If I do a very slow acceleration, I can feel a wobble / vibration in the floor board / coming from the front of the car. My wife in the passenger seat can feel it to, and she typically doesn't notice anything. Also notice it when reversing; this is when I first noticed something was off, during a reverse.

It's really noticeable from 40 mph on.

Again, it's only on a very, very slight acceleration but the wobble/vibration is very distinct. Cruising at a constant speed car is fine; can't feel any vibration with a slightly harder acceleration.

Dealer said it almost seems the tranny is struggling to find the correct gear. Dealer put the car on a lift, felt the drive line and dealer didn't like what they were feeling. Dealer installed a new drive line (exactly what work order said); it was warrantied. But vibration is still there so car is back at the shop.

Any suggestions? It is not tires / wheels.

 

[Hunter]

This started after about 8400 miles, car is all stock and is a 2022 Challenger RE.

From about 30 mph though 80 mph. If I do a very slow acceleration, I can feel a wobble / vibration in the floor board / coming from the front of the car. My wife in the passenger seat can feel it to, and she typically doesn't notice anything. Also notice it when reversing; this is when I first noticed something was off, during a reverse.

It's really noticeable from 40 mph on.

Again, it's only on a very, very slight acceleration but the wobble/vibration is very distinct. Cruising at a constant speed car is fine; can't feel any vibration with a slightly harder acceleration.

Dealer said it almost seems the tranny is struggling to find the correct gear. Dealer put the car on a lift, felt the drive line and dealer didn't like what they were feeling. Dealer installed a new drive line (exactly what work order said); it was warrantied. But vibration is still there so car is back at the shop.

Any suggestions? It is not tires / wheels.

Wheels stock?

 

[bobn]

Wheels stock?

Yes. Dealer checked balancing before they installed a new drive line.

 

[Unholy707]

What do you mean installed a new driveline? Driveshaft?

 

[Unholy707]

They usually call it a propeller shaft

 

[bobn]

What do you mean installed a new driveline? Driveshaft?

Work order says: installed a new drive line

I'll have to ask what this means specifically.

edit: I just googled: installed new driveline 16300101...I should have put the number on my OG post

And a document came up. I would post the link, but when I click on a link a doc comes up, see attached.

 

[bobn]

They usually call it a propeller shaft

Yep; my bad I didn't put the code from the work order as this is what they did. Put in a new propeller shaft.

Edit: Should work order have said replace propeller shaft instead? As would this be a drive line https://www.dcperformance.com/p-redeye-driveline-kit-77072540ab

I'm no mechanic, but drive line and propeller shaft replacements look to be quite a bit of difference.

 

[1971demon]

Yep; my bad I didn't put the code from the work order as this is what they did. Put in a new propeller shaft.

Edit: Should work order have said replace propeller shaft instead? As would this be a drive line https://www.dcperformance.com/p-redeye-driveline-kit-77072540ab

I'm no mechanic, but drive line and propeller shaft replacements look to be quite a bit of difference.

If they have ruled out those issues...replacing transmission is next...they wont service it...just replace it