Car violently shaking in 6th gear

[yoshibishi]

So my car has had an issue with shaking since I bought it. I've replaced a whole bunch of things to fix it, but it is still there. Here is a list of things replaced in last 10k miles:

Snub Mount
Motor Mounts
Diff Mount
Transmission Mount
Upper Control Arms
Front Axles
Brand new tires, mount, balance, alignment (last 100 miles)

I originally thought it was something to do with my mounts or tires. It really only shaked around 70mph, but now it is getting worse. I noticed that it isn't that bad in 5th gear at 70mph.

When I go WOT in 6th gear at any speed, the entire car shakes. This does not happen in any other gear.

Thoughts? Could it be ignition related and misfiring only in 6th?

[Lucca M]

Do you have hub centering rings?

[1.8t]

Do you have hub centering rings?

+1 what wheels are on it?

[yoshibishi]

+1 what wheels are on it?

I have the stock OEM BBS wheels.

Car shakes at any speed in 6th gear when I give it some gas, like the engine is trying to jump out of the car.

[Lucca M]

When you press the clutch it goes away?

[JimmyBones]

When you press the clutch it goes away?

Good question.

[bmwpower603]

Good question.

Sounds like the flywheel could possibly be coming apart. And damaging your timing cover. OP needs to be careful.

[IslandHydro]

Sounds like the flywheel could possibly be coming apart. And damaging your timing cover. OP needs to be careful.

Why then only 6th?

[bmwpower603]

Why then only 6th?

He said 5th also.



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[yoshibishi]

When you press the clutch it goes away?

It only happens under load, so pressing in the clutch makes it go away.

Sounds like the flywheel could possibly be coming apart. And damaging your timing cover. OP needs to be careful.

Ouch, does that happen on B7s as well? I've taken it to the shop for the past year and they said the vibration is from getting stiffer mounts..

How much should it cost for a flywheel replacement? I think it may be time to cut my losses and move on to another car.

[Lucca M]

Its not from mounts. Def not that. Either flywheel or something with transmission.

[bmwpower603]

It only happens under load, so pressing in the clutch makes it go away.



Ouch, does that happen on B7s as well? I've taken it to the shop for the past year and they said the vibration is from getting stiffer mounts..

How much should it cost for a flywheel replacement? I think it may be time to cut my losses and move on to another car.

$450 rock auto

$1200 JHM

Lol
$500-$1k labor probably

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[yoshibishi]

$450 rock auto

$1200 JHM

Lol
$500-$1k labor probably

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Yea, time for me to move on. Already spent over 10k in repairs this year. Not going to dump anymore into it.

Thanks for the input.

[bmwpower603]

Yea, time for me to move on. Already spent over 10k in repairs this year. Not going to dump anymore into it.

Thanks for the input.

Wow.. 10k..

Was timing done?

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[yoshibishi]

Wow.. 10k..

Was timing done?

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Nope. Everything just keeps breaking on this car.

[jakeoboy67]

Wow.. 10k..

Was timing done?

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doing your own work really pays off

[bmwpower603]

doing your own work really pays off

Well. I have an oil leak maybe from the valley pan. Tightening the t30s to much. Or front main. Can't tell.





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[JimmyBones]

Nope. Everything just keeps breaking on this car.

Do you know the production date of your car? I am willing to bet that your car is likely a 2005.5 S4. That was kind of a transition year from the B6 chassis to the B7 chassis. So it has a lot of B6 S4 parts. The 2007 and 2008 S4s are true B7s with updated parts in a lot of places. After replacing all the stuff that you have listed, I would figure that you are pot committed to the car. You will likely not get any money out of the car at this point.

doing your own work really pays off

Yes it does. Generally all low production German cars get expensive to maintain with higher mileage. S4s, RS4s, S6s, RS6s, S8s, etc are all good examples of that.

[yoshibishi]

doing your own work really pays off

Problem is, I don't have time to work on my car. I drop it off at the shop while at work and Uber back to the office.

Do you know the production date of your car? I am willing to bet that your car is likely a 2005.5 S4. That was kind of a transition year from the B6 chassis to the B7 chassis. So it has a lot of B6 S4 parts. The 2007 and 2008 S4s are true B7s with updated parts in a lot of places. After replacing all the stuff that you have listed, I would figure that you are pot committed to the car. You will likely not get any money out of the car at this point.



Yes it does. Generally all low production German cars get expensive to maintain with higher mileage. S4s, RS4s, S6s, RS6s, S8s, etc are all good examples of that.

WAUGL78E26A264867 is my VIN, looks like 2006 to me. Sure, I won't get money out of it, but I won't be losing more if I keep fixing it. Might trade it in for a truck to haul my Evo with.

[JimmyBones]

The production date should be on the sticker between the driver's door and the body.

I had to get a truck and trailer to haul my S4 and other cars to different tracks. So I know how that goes. Good luck selling your S4 if you follow through with that plan.

[yoshibishi]

Traded it in for another Evo. I got 10k for my trade in, just an FYI in case people are curious. I did fight them tooth and nail to get that rate.

[Krazed]

Damn sucks to hear you had such a bad time. Hopefully the EVO will treat you better.


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[melomandn]

Traded it in for another Evo. I got 10k for my trade in, just an FYI in case people are curious. I did fight them tooth and nail to get that rate.

How many miles were on the car? Seems like a decent trade in considering it needs a clutch/flywheel job.