Head Scratching

[richt]

Apologies if this has already been covered but my MKII Tdi has developed the following symptoms over the last few weeks -

 

Performance dropped off

 

Fuel consumption increased - gone from 40 ish without trying to 34.5 on last tank (full to full)

 

Its got noiser throughout the rev range but not noisy enough to make me think its the exhaust blowing

 

Keeps go into limp mode if you rev it above about 2500rpm - has only ever done this rarely / ocaasionally before

 

To me they all seeem linked - car is due 120k service in April - has done about 116k -

 

Dont know whether to wait for it to go in for service or tackle it before

 

Any thoughts / ideas welcomed

[chrispb123456]

You probably have overboost causing the limp mode, do you do a lot of town driving? if you do it's most likely sticking turbo vanes

[richt]

Thankyou - I am aware of the, many, reasons why this engine goes into limp mode but I do think all the symptoms are linked

 

Still scratching my head on this one!