sudden loss of power with 1.9 TDI engine

[VAGMAN1]

This has happened twice to me today - going along at around 70mph and suddenly the turbo cuts out and the car goes in to limp mode. No warning lights appear on the dash and and all turbo hoses are connected ok. The engine is a TDI 110bhp (not PD).

Any ideas please?!

 

[Rev-head]

Sounds like a sensor problem...............

 

[imported_kris_tdi]

stick it on vagcom

 

[MikeA3]

I've heard of this problem happening but usually a warning light appears on the dash.

I'd agree with Kris - VAG.com will be your best bet

 

[moschino]

I have had the same problem on my 1998 TDi 110. I believe it was down to a connection problem on the MAF sensor. Used contact cleaner on the plug and all ok for some time now.

Regards,
Jim.

 

[VAGMAN1]

Had a diagnostic done today and it is almost ceratinly a faulty boost pressure solenoid valve (also known as an N75 valve?). The valve is becoming stuck open hence allowing a too much gas through which can over pressure the turbo hence the ECU shuts it down. I'm going to buy another although I have read that they can, perhaps, be cleaned......

 

[it52mykn33]

hi did u have any luck cleaning it or did u get a new 1.
Mark