Overboost

[NagaBurns]

So I took my car to a VW specialist garage today to have the gearbox oil and brake fluid done and while I was there I thought it'd be a good idea to have a diagnostic done because of what I thought to be an EGR issue recently.....
Well according to the diagnostic it's not the EGR. I have an overboosting turbo and the outlook isn't rosy if I don't do something about it soon. It was recommended that I get a new turbo at a cost of over £800 fitted

Now I might be Welsh but I'm not stupid, I know he's got a living to earn and he'll probably do quite well off a new turbo but before I consider going to grease his palm with silver are there other less costly options open to me?

All the best
Lee

 

[James_R]

So I took my car to a VW specialist garage today to have the gearbox oil and brake fluid done and while I was there I thought it'd be a good idea to have a diagnostic done because of what I thought to be an EGR issue recently.....
Well according to the diagnostic it's not the EGR. I have an overboosting turbo and the outlook isn't rosy if I don't do something about it soon. It was recommended that I get a new turbo at a cost of over £800 fitted

Now I might be Welsh but I'm not stupid, I know he's got a living to earn and he'll probably do quite well off a new turbo but before I consider going to grease his palm with silver are there other less costly options open to me?

All the best
Lee

If you came to 'my garage' and i told you it needed an engine because there was an engine fault stored would you want an engine fitting?

That fault occurs frequently and the best thing to do is erase it and see what happens, rule of thumb is that if it hasnt put the light on its not a major problem. it sounds to me like you've been scare-mongered into having work done.

With modern vehicles just because a fault is stored does not mean that a component is nessesarily faulty

If i were you i'd get a second opinion from the likes of a dealer because the likleyhood of your turbo just going without any prior warning is unlikely and if it does they rarely cause damage to any other component.

 

[NagaBurns]

Thanks for that MJ. I'll see if I can get it into the stealers tomorrow and get them to run a diagnostic on it, although if he's erased the fault code are they likely to find anything?
I have had no warning lights, apart from when I had it go into limp mode about a month ago and since then nothing.

All the best
Lee

 

[James_R]

if the fault has been erased a dealer will not pick up on it unless it returns, to be honest if your car has dropped into limp mode then you might be best to excersise the vanes in the turbo by taking it on a "spirited" run making use of full throttle for prolonged periods to try and clean out any carbon or if the fault becomes more frequent then the turbo will need to be stripped and cleaned out - the over boost fault will be because the vanes are not opening fully but it is easily repaired without the need for a new turbo.

 

[sssstew]

yep agreed with MJ here. good exersize, or a clean up if youve got time, all been covered in detail before in the TDI section. Will save you 800 notes!

 

[NagaBurns]

Thanks guys, I have done a bit of further reading on the subject both on here and TDI Club and it seems that there are a number of things that can contribute to it.
I'll be fitting my EGR blanking kit from Allards this weekend, which will remove that from the equation.
Both boost and vacuum hoses get a mention too but I don't get any more smoke than you'd expect from a diesel engine so is it worth replacing them?

All the best
Lee

 

[James_R]

Replacing them with the allards kit is a worthy investment but they can be a pain in the arse to fit.

 

[sssstew]

yeah can be a pain to fit and you end up risking breaking some of the plastic connections they connect onto, unless specifically needed i wouldnt risk it.