Vibration problem, didn't fixed after alignment and balancing!

[zanGTA]

I'm noticing since a while a vibration affecting the pedal area and the steering wheel. I was supposing it was a wheel balancing and so I did a front-rear wheel swap, alignment and balancing.

Surprising the vibration is a bit lower but practically already there. There are no vibration on revs but when i reach 90mph even the back mirror vibrates.

Is that normal? Is that a know issue?


I have 9k miles and 4 months driving this car. GT, automatic, premium. I have steeda jaking rails installed, frpp xpipe and strut tower brace.

:hail:

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[jasonstang]

Sounds like a case of drive shaft vibration.

 

[D.Brown]

Sounds like a case of drive shaft vibration.

I would agree. I'd head over to the drivetrain section.

 

[zanGTA]

I read about that, a huge topic. Seems i'm in a shit.

But it isn't strange that the vibration is in front of the car? How the driveshaft can affect the steering wheel?

 

[D.Brown]

I read about that, a huge topic. Seems i'm in a shit.

But it isn't strange that the vibration is in front of the car? How the driveshaft can affect the steering wheel?

Because it's a vibration in your driveline. It affects everything that pilots the car.

 

[jasonstang]

Is the steering wheel shaking or just vibration?
Because it could be a bent wheel or something bent.

 

[zanGTA]

Only vibration, and over 90mph there is a sound like "wrooooooooooooom" very similar to a damaged wheel bushing.

But the wheels are ok, checked deeply in the tire shop and the car is practically new.

 

[FlaGrey]

Could possibly be a bad or damaged tire.

Thoroughly check the sidewalls on each side of the tires for an imperfection such as a bump or a crease.

I only bring this up because I have had such an issue, not on my GT though. Alignments and tire balancing didn't fix it.

I found a bulge on the inside tire wall of one tire. Easy to miss. When I took it back and pointed it out / asked about it, they said the tire was bad and replaced it. in my case it solved the problem.

As far as the vibration. if you can change gears to adjust the RPM but remain the same speed and the same vibration remains than wheels or tires.

If the vibration changes as you adjust rpms but remain at the same speed than driveline.

Hope that helps, Good luck.

 

[zanGTA]

The vibration is the same in any gear. It starts at 10mph very low and gets its maximum in the 55-75 range.

In D or N doesn't change anything. It is a bit stronger during deceleration.

I'll try to align with steeda's alignment kit. Then i'll try subframe braces.

Crossing fingers...

 

[keltymd]

check your front wheel bearings

 

[Mustg3]

I'm convinced that we or the dealer cannot fix this defect that these cars appear to have.

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