PHIL928

The seat slides forwards and backwards about 10mm with minimal force. Really annoying when you brake and the seat shifts forward just a bit.

Anyway apparently it's due to plastic guide tubes disintegrating, but as far as I'm aware the part is NLA, without buying whole new seat rails. So what have you guys done to fix it?

This seems to be a common problem, as 4 out of the 4 cars I know that have power seats suffer from this, but I can't find a solution so it left me wondering if it has something to do with our climate and that maybe the rest of the world don't have this problem?

Texbuckeye

I have the same problem on my car.

FredR

Make that 6 out of 6. It is probably more a problem here. For some brain faded reason known only to Porsche they fitted a pack that is a mix of washers and a plastic shroud. They fall apart in our heat over time to differeing degrees. On my S4 [6 years dead] to fix it I pulled out the drivers seat and you have to undo the drive that adjusts the seat- just pull out a split washer I seem to remember. The assembly then comes away and you can remove the offending item[s]. There is one of these packs on each side of the rail and they both need packing. If memory serves me correctly you have to ensure it is not packed too tightly. I used copper washers because I had them- I dare say steel with a bit of grease on them would be fine.

I had some coppoer washers used for indexing the spark plugs that I never used. I just packed the gap with some of these until the sack was taken up. I called it quits when the movement was down to something less than 1mm. When refitting you have to ensure the drives on both sides are synchronised.

My current 928 has this problem but the movement is not so exagerrated [yet]. Perhaps a job for winter time when things cool off.

Regards

Fred

SeanR

It's these things that wear and break.




Not found a factory replacement but one of our members has come up with a solution that I've just not had time to try out.

G8RB8

Looks like something a piece of high pressure hose would fix. I have this problem and will implement that as a fix when is comes up on the growing list.

SeanR

I used two larger tie wraps on Brads car when we discovered it on his. It reduced the slide by 8mm but it's still annoying.

Fogey1

Is the black thing in the middle an O-ring or a steel mounting ring of some sort?

And am I missing something about how special those plastic bits are? My local hardware stores, small and big box both, sell nylon washers and sleeves and offsets. Whether they're the proper size, I don't know. Does anybody have the relevant dimensions?

Jim's idea, above, of a razor blade and a tough hose of a proper ID and OD ought to work also.

Any chance these "plastic" bits are factory failure points for the seat mounts, engineered to fail in a crash and soak up a little impact?

Will

Texbuckeye

When you find a solution let me know. I would like to fix it.

G8RB8

It looks to me like that's where the rail attaches to the seat frame. I envision two short pieces of hose. One on each side of the bracket. Must be for vibration damping.

dr bob

Perfect application for some Belleville washers. Else Delrin spacers to minimise the play. With anything that doesn't include spring tension, there will be play. Hose does not sound like a real solution.