no power in tdi, very annoying HELP

[sunderwood]

Basically, yesterday i started my car after the preheat light had gone off, it revved up to 2k automatically, then when i pulled away the preheat light flashed repeadedly. i could live with this briefly, except it has no power at all. its like there is no turbo, and an anti turbo instead.



please help.

 

[sunderwood]

new development:

this only happens when the engine is already warm.

started a bit slowly this morning which may be a glow plug problem? and had full power. only when i came back to the car, what i have mentioned inmy first post happened, and no power.

 

[scott161]

i had something similar on my golf tdi and turned out to be the sensor going to the air box. also had problems with a pressure regulator sensor that controls the egr valve