[heky]

Good day Everyone, I have a Jetta 99.5 with 150K on it. Recently I had this car go into limp mode and i had replaced the MAF, N75, all the hosing, and the VNT actuator as part of my attempt to fix this. Now at low rpms i can feel the boost from the turbo, however when I hit around 3500 rpm the car goes crazy and revs up to 5000+ rpm and looses power. When this happens i usually just turn the car off and start it again and it comes back inlimp mode. Any ideas what could be wrong?

Thanks for any pointers

 

[ajnabi]

Have you checked for engine oil in the intake pipes/intercooler?

IQ

 

[chittychittybangbang]

2nd, you could be experiencing an engine runaway if the engine is consuming engine oil. See here for more details: http://www.myturbodiesel.com/1000q/stop-runaway-diesel-engine-how-to.htm

 

[heky]

Good tip

I just saw the videos you sugested and they sound exactly to what i am experiencing. I will also check the intercooler for excess oil. The bad news is that I will have to replace the turbo very soon and chech the rest of the engine. I will let you all know how it goes. Thanks a lot