Hi all can you help im in a bit of a spot. Going on holiday in a few days and all of a sudden the superb will not pull bellow 2500 rpm. I have my foot flat to the floor in 2^nd and 3^rd and nothing until it get up between 2500 and 3000 rpm.

Any ideas please fingers crossed it’s a quick fix

Would help if you say what engine you have m8

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Oh yes that would help sorry bit of a panic at the moment with holiday coming up.

It is the 1.9 pd 130 break. It is on a 53 plate and has done 89000 miles.

Could be one of the boost / intercooler pipes that have come loose, unfortunately I have no idea of the layout of a superb. Where abouts are you maybe another member is close to you that has vcds to check out the codes if there is any?

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That sounds interesting I have just had the radiator changed do the inter cooler pipes have to be disturbed to change the RAD? Would the Dual mass flywheel cause power loss. Its fine past 2500 rpm its just flat as anything below that. I have my foot flat to the floor and it just slowly picks up then after 2500 rpm of she goes????

I live in Cwmbran in south wales.

Edited 19 May, 201313 yr by andy cousins

The intercooler pipes would have been removed to change the radiator. And is what I would look at first.

Hi All just got back from garage. They had a quick look result.

All the pipes are still connected and no splits.

They agree that it is down on power.

No fault codes showing on computer.

They have said it’s an odd one. They think it may have something to do with the boost pressure valve but it’s not reporting a problem on the computer.

When the turbo cuts in its fine.

Can this happen?? Where do they start? They suggested changing the boost pressure valve first????

many many thanks Andrew

Check the pipes to the airbox area, there is one small bore one that if not on properly cuts the turbo out, check along the bulkhead as well, the car will feel totally flat if it's off, can't remember if the turbo does work after a certain rev band but normal pull aways will feel like you are towing a hgv trailer.

Edited 22 May, 201313 yr by Supurbia

It sounds as if the VNT vanes are not closing initially to help spool the turbo up. There are chemicals available to buy in spray form that help free up sticky turbo vanes. I would try that.

you can exercise the VNT mechanism yourself, hurts a bit as its not really designed for fingers to get to it easily. just move it up and down quite a few times. If it moves too easily then a vac pipe is off. If it doesn't move then the VNT is stuck.

has it been on vag com? not just a fault reading.

You will be able to log requested boost vs actual if you go for a drive. If there's a huge difference then it's an airlfow problem (vnt or maf).

Hi all

Sorry I have only just got back. been away on holiday.

Right in the end it was a vacuum valve that holds the boost valve open at low revs. It goes like a train now

Thanks for all the help all.

Glad it is fixed. And thanks for your feedback on the cause.

Hi all

Sorry I have only just got back. been away on holiday.

Right in the end it was a vacuum valve that holds the boost valve open at low revs. It goes like a train now

Thanks for all the help all.

what is this vacuum valve? where is it located? are you talking about the turbo actuator?

I have a similar problem , i'm in Pontypool , where did you get it fixed ?

Where is this vacuum valve 

Edited 3 August, 201312 yr by flabio

the vacuum box is the box of tricks all the vacuum pipes go in to. There's usually six of them from memory.  Often the pipes can leak - the one going to the actuator is the key one to check.

the vacuum box is the box of tricks all the vacuum pipes go in to. There's usually six of them from memory.  Often the pipes can leak - the one going to the actuator is the key one to check.

Thanks i'll check this out

Today , checking out the vacuum pipes , there was a plastic pipe at the rear of the engine had completely come out of a rubber pipe .

Fixed now , engine back to normal.

               Thanks all