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I have a knock from the steering when it's turned under load. It won't do it if the cars jacked up or when driving. If you turn the steering when stationary (I know you shouldn't) or parking you get a slight knock when you apply pressure either way.

I'm convinced it's the one or both UJs on the column shaft. Steering wheel is tight and there's no up/down or left/right column movement at the wheel so not the bearing or bush.

My question is, why are the UJs so expensive? £354 for genuine Porsche part and £150 for Retroline - and I'll probably need 2 😭. That seems excessive.

Can these be cross referenced to another vehicle? A very common part fitted to every car on the planet surely there's an alternative. In the same way CIS components from Volvo, Saab can be used.

If there's no alternative so be it but I hate "the Porsche tax".

 

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Worth checking ARB mounts etc before shelling out on these - typically they knock when loaded if they fail.

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3 minutes ago, Roy M said:

Worth checking ARB mounts etc before shelling out on these - typically they knock when loaded if they fail.

Thanks Roy, they knock when turning the steering and can be felt through the wheel?

I'll need to check everything obviously, starting with the cheap stuff first

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Some info here

 

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I did search but didn't find this.

Many thanks Roy

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It could also be the rack or track rod ends as well. 

Get an assistant to move the wheel and you should be able to hold onto the UJs and feel if the play is in them? 

I had a bit of sticking in my rack at dead centre. It’s pretty easy to rebuild and re-grease them and it mad a big difference to my car. 

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I had a similar issue a few years ago. It was just a loose UJ bolt. Free to check they are all tight.....

Chris.

 

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Had a rummage about tonight. Definitely play in the column UJs.....I think it's the top one.

I check tomorrow that everything is tight.

Cheers guys

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I’m not sure this feels like a totally ridiculous price.  They don't  fail very often (how old is tour car) and are probably safety critical in terms of being made of the right material to the right standard etc.  Is it worth looking for a cheaper version......

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If you push the tach out from the back; you can put your arm through the hole to feel the top knuckle as you work the wheel.  You’ll need to strip stuff out to change it, but at least you can confirm the play that way. 

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Posted (edited)

I've isolated the various parts to eliminate them.

It's not the column UJs.

It's not the steering rack rubber coupler although the rubber feels a bit soft.

 

IMG_20200531_090537.jpg

 

So that leaves the rack and track ends but the noise is central so I don't think it's them.

Turning the pinion on top of the rack causes the noise so looks like it's a rack out job after eliminating the track ends. I did feel and listen to them both last night while someone shoogled (good Scottish word 😆) the steering and I'm sure it's not them but will double check.

Edited by craigt

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19 hours ago, Roy M said:

Some info here

 

Thanks Roy.....I think the issue is discussed in that thread. Will have a look later 👍

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I had the same issue as you you and was convinced it was the UJs. It turned out the rack and pinion was dry and worn at dead centre.

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