Sorry if its a constantly repeated one,but here goes :2001 a3 tdi keeps giving limp mode, moreso from cold,usually as boosting to around 2800 rpm i've fitted new maf, and n75 valve,cant find any damaged vac pipes, any advice would be great.
If so, it may need cleaning out. They can get real dirty with soot. This gunges up the boost control and you can overboost very easily, causing limp mode.
not really sure (excuse the ignorance)its a 2001 A3 tdi se 110 bhp and the turbo boosts perfectly sometimes for hours on end then from nowhere, limp mode!
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