RonD.

88 951 non "S" April 2015 Had 4 wheel alignment performed all is good. Hit large pothole steering wheel goes out of center. Car still tracks straight with steering wheel out of center. Have 2nd 4 wheel alignment all is back to normal steering wheel straight, etc. Put several hundred miles with no issues until yesterday. Took drive no potholes rough roads etc. steering wheel is out of center again. Car tracks straight with steering wheel out of center. Any thoughts?

Alan 91 C2

I just when through this with my 87 951.

Check the support bushing on the steering rack. The driver side bushing restrains the rack lateral movement. On mine the bushing had failed, oil leaks destroy the rubber, allowing the rack to move right and left under hard steering loads. The give away is that the car steers normally, but the steering wheel position, when driving straight ahead moves around. Depending on last hard turn.

New bushing and all good.

RonD.

Thanks . I'll check out the rack.

refresh951

I always check the bolt tightness after alignment. My experience is that many shops do not get everything tight enough, especially for track use.

Humboldtgrin

Very true!

RonD.

Rack bushings are in perfect condition. Could it be tie-rod ends? They look fine, boots are good.Proper way to test tie-rods? Did tire test holding tire at 9 and 3 o'clock and have play equal on both sides. No play wheel bearing test at 12 and 6 0'clock.

Tom M'Guinn

You might mark the rack and check to see if it's moved next time the steering changes... Looks can be deceiving.

zermatt944t

I have the same problem and it's worst at the track. I have a cross threaded bolt on the driver side steering rack busching support. I suspect a lateral movement of the rack as a possible cause of this situation.

Droops83

It is likely that you bent something if the steering wheel was off-center right after hitting the pothole. I'd take a good hard look at the tie rods, they bend pretty easily.

If you can't find anything, take it back to the alignment shop, or find another alignment shop that specializes in Porsches, or at least does a lot of track cars. There are diagnostic angles that can be measured to help determine what is tweaked.

Dude, you knowingly run your car at the track with a cross-threaded fastener for the steering system??? Fix that **** before you go out again! Guys like you scare me.

Chris