Lack Of Power

[jack009]

When driving my A3 2005 2.0 TDI everything is ok until i get to motorway or when overtaking. Then my engine power dies making it impossible to accelerate unless i stop car and turn off engine and restart car,then all is ok till the next time it happens. Any Ideas what problem is?

 

[devonmikeyboy]

You need to get somebody to scan your car with VAG COM as your car is going into limp mode for some reason.

 

[leach76]

Normal causes are normally : maf sensor,boost reg or selenoid,turbo vanes sticking,but wouldnt think turbo vanes if it is curing once the igntion is turned on and off

 

[Zeppelin]

When driving my A3 2005 2.0 TDI everything is ok until i get to motorway or when overtaking. Then my engine power dies making it impossible to accelerate unless i stop car and turn off engine and restart car,then all is ok till the next time it happens. Any Ideas what problem is?

Yesterday I noticed the same issue Have you figured out why your engine losses power yet?
I'm going to get a VAG COM asap...

 

[Zeppelin]

ok,
there is my log below:

16618 - Boost Pressure Regulation: Limit Exceeded (Overboost Condition)
P0234 - 000 - -
Freeze Frame:
RPM: 2520 /min
Torque: 138.0 Nm
Speed: 132.0 km/h
Load: 32.2 %
Voltage: 14.52 V
Bin. Bits: 00101000
Absolute Pres.: 1499.4 mbar
Absolute Pres.: 2182.8 mbar

Readiness: 0 0 0 0 0

any ideas what I have to do now?

 

[devonmikeyboy]

The turbo is over boosting for some reason. Usual suspects are the VNT turbo vains sticking,actuator rod sticking or a faulty N75.

 

[Zeppelin]

ok. in my case it was one of vacuum hoses. just fell off.