Not engaging gears

lightning · **Posted:** Tue May 25, 2010 7:51 am

What reasons could there be for a 928 S4 automatic not to go into gear? You move the shift lever but nothing happens.
I'm hoping it's just loss of fluid, although I would have thought you would get some warning of failure before it actually stopped working completely.
I have not seen the car as it's the one I sold in April, but the guy said it won't go into gear.

Brett928S2 · **Posted:** Tue May 25, 2010 9:15 am

lightning wrote:

What reasons could there be for a 928 S4 automatic not to go into gear? You move the shift lever but nothing happens.
I'm hoping it's just loss of fluid, although I would have thought you would get some warning of failure before it actually stopped working completely.
I have not seen the car as it's the one I sold last month, but the guy said it won't go into gear.

Hi

Broken T` Shifter ???

Common if hes been rough with it...

All the best Brett

lightning · **Posted:** Tue May 25, 2010 9:24 am

I thought that, but it was a brand new one.

I'm waiting for him to ring me, he's found a place called Autohaus that are going to come out and look at it, but I told him (in a reply to his email) to speak to me first, I may be able to tell him what is wrong with it.

lightning · **Posted:** Tue Jun 08, 2010 7:32 am

He's taken it in somewhere and they say the hydraulic oil pump has failed/broken up, and they are rebuilding the gearbox at a repair cost of £2500.....hells bells.
Is this a rare fault? I don't know if there were any warnings of failure.

I would have thought a second hand gearbox would have been a better bet. There's one on ebay at the moment for £400 BIN.

lightning · **Posted:** Thu Jun 17, 2010 8:16 am

Does anybody have any thoughts on this gearbox failure? Is it possible that the oil pump would break up? Would you get any warning of this failure?

tr7v8 · **Posted:** Thu Jun 17, 2010 8:56 am

Pic of a typical pump here : http://auto.howstuffworks.com/automatic ... sion12.htm

Loss of pressure I'd guess would be a seal blown out. As boxes age the seals harden & this causes bypass leakage which causes all manner of problems. This is why older boxes fade away rather dying suddenly. It is a Mercedes auto at the end of the day so £2.5K for a rebuilt warrantied box isn't too bad.

Porsche Enthusiasts Club Forum

Not engaging gears

Who is online