Hi all have a 10 plate Octavia 1.9tdi 250k

when driving around town going up big hills car is fine flys up but when on motorway or bypass and put my foot down car goes to 2500-3000 revs car goes into limp mode 

no engine management light on but when I plug in comes up turbo overboost limit exceed any help would be great thanks 

could be clogged up turbo vanes, you could try some a turbo cleaner that you add to the fuel such as Achoil

 

https://www.powerenhancer.co.uk/shop-by-category/fuel-treatment-cleaners/turbo-cleaners/archoil-ar6400-d-pro-diesel-cleaner-pea-concentrate-639.html

Needs a Mr Muscle enema.

 

Actually no, it sounds more like degraded vacuum pipes collapsing under heat conditions.

Edited 4 August, 20196 yr by J.R.