Cayenne 4.5s - Valve Chest (in gearbox) How much to change?

[A911DOM]

Title says it all really.

Despite having had the prop shaft changed a few months ago, Im still getting an intermittent wobble through the drive train somewhere.

My usual guys think its the valve chest in the gearbox - so whats the financial damage likely to be to change it out?

Thanks

[Stever]

Excuse my mechanical ignorance, this may be completely different to your question but there are a few similar words

My 4.5S used to crunch on kickdown mostly at motorway speeds. It was diagnosed as the gearbox valve bodies by my specialist and they recommended a firm in Luton, fortunately I had a Warranty Direct at the time and they agreed the fix - overall cost was £900! (2 years ago)

It's been great since

[A911DOM]

Stever said:

Excuse my mechanical ignorance, this may be completely different to your question but there are a few similar words

My 4.5S used to crunch on kickdown mostly at motorway speeds. It was diagnosed as the gearbox valve bodies by my specialist and they recommended a firm in Luton, fortunately I had a Warranty Direct at the time and they agreed the fix - overall cost was £900! (2 years ago)

It's been great since

I have been quoted a figure more like £1150 but wanted to see what the general feel was for this type of job!

I don't get a crunchy kickdown, just a 'wobble' when trying to accelerate from low revs!

[Stever]

This was more than a wobble, it felt more like the gearbox and or engine was exiting the car, it was a huge lurch, crunch and engage - not nice but only apparent at higher speed change down.

The figure you have been quoted sounds about right with a little inflation over 2 years?? The firm was recommended by RPM as used for all their gearbox work. I met the main man and he inspired confidence, I'll look it out if you want to know???

[A911DOM]

Stever said:

This was more than a wobble, it felt more like the gearbox and or engine was exiting the car, it was a huge lurch, crunch and engage - not nice but only apparent at higher speed change down.

The figure you have been quoted sounds about right with a little inflation over 2 years?? The firm was recommended by RPM as used for all their gearbox work. I met the main man and he inspired confidence, I'll look it out if you want to know???

Thanks, much appreciated!

[bimjim]

Stever said:

Excuse my mechanical ignorance, this may be completely different to your question but there are a few similar words

My 4.5S used to crunch on kickdown mostly at motorway speeds. It was diagnosed as the gearbox valve bodies by my specialist and they recommended a firm in Luton, fortunately I had a Warranty Direct at the time and they agreed the fix - overall cost was £900! (2 years ago)

It's been great since

Was it these guys - Beds Automatic Transmission

[David W.]

A911DOM said:

Title says it all really.

Despite having had the prop shaft changed a few months ago, Im still getting an intermittent wobble through the drive train somewhere.

My usual guys think its the valve chest in the gearbox - so whats the financial damage likely to be to change it out?

Thanks

It goes without saying that the wheels/tyres are ok?
dw

[Stever]

bimjim said:

Was it these guys - Beds Automatic Transmission

Indeed thanks, Nino's your man, fixed it and took the time to show me round his workshop. I always find this a goodpoint

[A911DOM]

David W. said:

It goes without saying that the wheels/tyres are ok?
dw

Hi David,
I had a couple of emails back and forth with a very helpful chap on here about this when trying to diagnose a while ago.

The wheels are boggo standard 19's and the tyres were brand new, balanced and fitted recently.
(The problem existed prior to these being fitted.

When i bought the car it was on 22" pimp rims with elastic band rubber fitted. I downsized for comfort reasons and have been much more happy with the ride since - but the 'wobble' / 'judder' whatever you want to call it - persists