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Steering Vibration @ Highway Speeds

aaronjod
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aaronjod Enthusiast

aaronjod

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Posted

Hey Guys,

Got a 32GTR with a steering vibration. Seems to have had this issue from day i got it but i could barely notice it.

Up around the 90-120 mark i get a bad vibration through the steering wheel. . It almost seems the get worse the longer i drive, but i can't tell 100%, its semi intermittent.

Have an aftermarket Momo which came with the car. Also have HICAS Deleted with lock bar and all removed. It appears i have a R33 Power steer pump. It has a line going to the rack (Pressure) and a line coming from the reseviour connected to it, no other hicas etc.

I have had:

Wheels changed, Wheels balanced. Had a full wheel alignment done. Power steering fluid full, no leaks.

Checked coilovers for loose bolts, suspension arms, adjustable camber arms. Wheel bearings are ok both sides, were done less than 2 yrs ago. I pulled the power steering pump off and inspected it. All the vanes look fine, and bearings/seals are good. All bushes are new in the front end, and steering rack ends don't have any play.

I had the drivers side CV Rebuilt (had a click).

All wheelnuts are the same, all there (New) and wheels studs OK. It almost feels like the wheels are going to fall off, but i've pulled over and checked many times.

Where do i go next? Steering rack? any further tests i can try? If so, do i get it rebuilt, or can i buy a new one?

Thanks

Aaron

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Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

see if there is any free play with your front steering rack and also the hicas lock bar's tie rods, then proceed in checking all the ball joints.. chances are there is some form of free play in them.

aaronjod Enthusiast

aaronjod

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Posted

Changing the wheels has no effect. Have a completely different set on, and tried swapping F to R on the old ones.

Had a look at the rack play, definitly isn't shagged.

Might need to double check the tie rod bushs in the rear, havn't looked at them.

I did have my front right CV rebuilt, is it possible the left is gone too and causing a vibration? I only did the front right because it was clicking under lock.

simpletool Mentor

simpletool

Posted
Posted

Racks ends? Caster bushes?

FYI:

I was surprised the difference from doing all the wheel bolts up to the same torque. When I get new tyres, and the stupid places always rattle run them up, I get home and crack off the nuts and do them back up in the right order with a torque meter, to 100Nm. It's noticeable, but not the the extent you seem to be talking about.

sky017 Proficient

sky017

Posted
Posted

no buckles on the opposite side of the wheels that you cant see? .i had steering vibration in my ssv ute , couldnt work out why until one day i happened to notice the slightest flat spots , mind you they were 20s but as soon as i got new wheels problem sorted .

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