Car Bumping/shaking

[vrkt33]

Last night i was driving home from my cousins house and all of a sudden when i was not accelerating and my car was slowing down it was shaking and i was feeling a bumping coming from the front right hand side wheel as i go quicker it would go away but soon as i stop accelerating and just cruise and 60k i would feel shaking when slowing down or just a bumping when cruising at 60k.....

Im thinking it may be a crushed wheel bearing but im not 100% sure has anyone else had this problem or has some input to what it may be.

My car is a Nissan Skyline R33 GTR

[rgr34]

mite just need to get a wheel balance ..... does it shake through the steering wheel?

[vrkt33]

yer its shaking the whole car really when im not accelerating

[mad082]

you'd think that if it was a wheel bearing it would get worse with speed, and it would also get worse when turning left (more weight on the right hand side when turning left).

it may possibly be an enginge mount, or the car has a missfire at light load. if you can make it do it on command, next time you are slowing down and it is doing it, push the clutch in. if it goes away then it is engine mount or a missfire. if it is still there then you may be right about the wheel bearing or it may be a uni joint of even a CV joint/shaft

i had a magna once with a shagged main engine mount but my vibration problem was the reverse of yours. at about 90kmh if you put your foot down it would shake the shit out of the car. even cruising at 100kmh was enough load on the engine for a small vibration but if you put your foot down just a fraction, like to go up a hill it would shake like hell. new engine mount fixed it, and the old mount was totally shagged.

[tridentt150v]

If it doesn't happen all the time, but does happen sometimes and especially if you hit a series of bumps that trigger it then its likely to be your power steering. Not sure if the Skylines have one or not [and I CBF looking atm, and I've never needed/had to do it on one] but there is usually an adjuster on the power steering box, a screw and lock nut. Get your wheels straight, undo the lock nut, screw the adjuster in and out until you feel and know how it seats and then adjust it to firm, a bit better than finger tight, but not gorilla'ed. Usually seat it neat and then another 1/8 of a turn will do, lock it off and problem should be solved.

[mad082]

actually that reminded me. a mate of mine had a s13 that had a shagged pump and whenever you turned the wheel the car shook. have also seen it happen in a car with low power steering fluid and went away when topped up, but again, it was only when you turned the steering, not when just driving.