Bad Vibrations!

[OLI_EP3]

I have a Toyota Altezza that has been having some bad vibrations that can be felt through the seat at 70+ mph and also when the accelerator pedal is at a certain position (regardless of gear) I’m curious as to what this could be, as (I believe) it happened after I replaced the aftermarket exhaust with it’s original cat back exhaust.

My thoughts are that it maybe geometry, balacning or tracking, or would the exhaust have any effect? As it feels a lot more 'choked' now with the standard exhaust.

What would be the best plan of attack?

I was thinking check wheel balancing, and then 4 wheel alignment if still present? As it's an import and has GAB coilovers would I still be looking to achieve the 'stock' alignment settings?

hate it when your 'baby' doesnt feel right ;)

[apsaauga]

Hi, what a coincidence, I have something like that too, and i am pi.... off. I feel vibrations on the steering wheel when i go 80-100km/h speed and then when i hit brakes, the vibration is quit strong. Warped discs you will say, i would agree, but... week ago i changes my discs to new ones, and pads too, so wtf? i checked my car when it was lifted up, and both front wheels spins not so freely, is it normal? i spin it, and it stops at the moment. Could that warp my new discs already??? besides, at dealership they said, that vibration is caused because of bad front tyres, i saw that it is bumpy when they turnet them on balancing mashine. Can these bumps cause vibration during braking? And can it be, that my tyres are messed up, but ballance is 0.0? Help me please, because my nerves are going down Besides, i already changed 3 pair of discs, because of jamed right side breaking pad mechanism, changed it too, cost ~ 800 euro :tsktsk:

Please, don't let my nerves get jammed:) make me calm

[apsaauga]

Nation of IS, please, don't be so quiet.

[jason_l]

havn't had this problem with mine, could be tracking if its happening at speed!

most tyre places will check your tracking for free, and will only charge you if you have it sorted! and then its only about £15. whats the tyre wear like, is it un-even?

J.

[Lexus Jim]

If its not the wheel balance and the tyres and brake disks are fine then get some 4 wheel alignment action going.

Knowledge is HERE

[jdmparts_guru]

also check if your front balljoints are ok.

[Colin P]

how much are ball joints?

[jdmparts_guru]

I guess approx. GBP130 per set?

[Lexus Jim]

can't remember but I think a bit cheaper then that, maybe £100 ish

[Gord]

i think thay are £45 each

[apsaauga]

Thanks guys, i will check that out. About tyres, I have Dunlop Sport 9000 R17 45mm, and when they showed me how it spins on their balancing machine, it was quite bumpy. I hope that vibration is because of that, because my guarantee just expired a week ago :/ hope it is not ball joints