Turbo trouble

[Ollymw]

Hi I own a 140 tdi and in starting to have trouble with the turbo... The problem is its boosting late and on occasion throwing itself into limp mode, but with a turn of the key it's fine again? I've had it plugged in and it said boost pressure sensor with is the n75 sensor which I have changed but still no change. Can anyone help?

[Ollymw]

Also could anyone with a 140 tdi tell me when there boost kicks in because I've had the problem so long now ive forgotten

[AlanH]

I'd get it plugged in and checked on VCDS.
Are you getting a flashing amber EML?

Could be a sensor, could be that the turbo is fubar'd. Until you plug it in you won't know properly, and it's pointless spending money on bits if they're not the right ones.

[Ollymw]

Yeah I've had it plugged in twice already both times have said n75 boost pressure sensor which I have changed, but yeah when it goes into limp mode the glow plug (Spring shaped) light flashes not the engine management

[supermoto552]

Sticking turbo vanes or dirty egr maybe, my old 140 golf had the same issue...cleaned it out with mr muscle and it was fine after.


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