ALMOST have solved my vibration issue - need a bit more help

[speedyspaghetti]

Originally Posted by Seal1968

Yup...spacers have some wiggle room, thus a hub-centric ring would ensure all is properly centred. You can get crap behind the spacer too that will not allow it to seat flush on the hub. A steel hub vs. aluminum spacer = corrosion...the two metals don't get along well.

I was also thinking some sort of steering box/rack/bearing issue too...he said it was in the steering wheel...can't be the tire if he swapped someone's rim and it still does it.

Go over all bolts and re-tighten to spec?

Frustrating I'm sure.

Very frustrating... I'm pretty sure I've removed and re-torqued every bolt on this G-D car... I just want to enjoy my car again!

[Larrymal2]

This may be a stupid reply but I needed to buy a new left front cooling fan for my 99 box. Reading reviews the cheaper ones had complaints of vibration strong enough to feel it through the steering wheel. I went with the OEM which was $100 more to make sure I didn't cause an issue.
Maybe you have a piece missing off a fan blade? Just a thought.

[speedyspaghetti]

Originally Posted by Larrymal2

This may be a stupid reply but I needed to buy a new left front cooling fan for my 99 box. Reading reviews the cheaper ones had complaints of vibration strong enough to feel it through the steering wheel. I went with the OEM which was $100 more to make sure I didn't cause an issue.
Maybe you have a piece missing off a fan blade? Just a thought.

Interesting idea - I haven't cleaned my radiators in a while so I might as well check this. Thanks!

[Larrymal2]

any luck with the fans??

[Ricardo]

Hi! Did you arrive at some sort of conclusion?

I have the exact same problem and like you I've changed every suspension component on the car. Plus, I've changed gearbox and motor mounts also. Every new part seems to do some little benefit but nothing major. Previously the car was very precise and enjoyable.

The only slight different symptom mine does is that the shaking on some days is more severe than others. But even this is totally random.

I have also taken the car to a Porsche dealer. They say it's a wheel/tire balance problem. Can't be as I've used 3 sets of tires on it since and tried different wheels along the way. Also different tire shops didn't find any unbalance problem and always end up saying must be something mechanical. Very frustrating.