Volkswagen Repair: RE: VW GTI 1.8T power loss, vw gti, engine harness

Question
In response to your question regarding how high the engine was revving when the turbo let go:

When the turbo let go, I was in traffic doing maybe 45/50mph @ 3000rpm (approx.). I was not being rough on it in any way, just cruising with the flow. All at the same time I see: Check Engine/EPC/Flashing & Beeping Oil Light. I promptly pulled over and shut the car off. It was not run again until the dealership serviced it. The dealership only looked at what they had codes for (Check Engine/EPC/Oil Light) and consider the job done! Do you think there is a possibility that some of the turbo shrapnel didn't exit out the exhaust and got sucked back into the engine somewhere(all blades of the impeller were torn up and missing chunks and the shaft was broken in at least two or three pieces). I am really at a loss. I can produce a check engine light consistently on command. All I have to do is wind it out through the gears and when it gets above 5000rpm's in third it seems to just flat line as it tries to reach redline (6500) and shift. It doesn't accelerate further once it reaches that certain rpm range (above 5K) and that is when the check engine light comes on. I hope this additional info is helpful in some way! Thanks again!!!


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Followup To
Question -
2002 VW GTI 1.8T Tiptronic Automatic, 36000mi, Climate = New England (currently in the 50's).
History: (all warranty) Have had Engine harness replaced, coil packs, plugs, MAF, N-75 valve, and last but not least... the Turbo.

The problem that I am now having is a general lack of power compared to how it performed before the turbo was replaced and relentless misfire codes (typically above 5000rpm). A bit of history: When the turbo (bearing) let go, it blew ALL of my engine oil out the exhaust and every other which way (all the way up to but not into my air box). The dealership replaced the turbo and all related seals, high pressure oil line and so on. I have been back and fourth to the dealership about this problem around four times. The first time they replaced my MAF (didn't help). The next time they replaced my plugs (again didn't help). Time after that they replaced my N-75 boost control valve (you guessed it.... didn't help). Now they are trying to just blow me off all together. For one thing, I cannot believe that the cat and 02 sensors are still working and haven't been replaced (the cat made a great bottle neck in the system before all of my oil went through it). They refuse to replace it without (or look at it) without a code on it. Why would I be getting misfire codes after having the turbo replaced? Before this the car ran flawlessly! It is my opinion that there is much more damage to the engine than replacing the turbo by itself can fix. Any insight anyone might have would be excellent!!
         Thank You!!!

Answer -
Paul,

How high did the engine rev when the turbo let loose?

I wonder if the combination of oil in the intake and the high rpm's may have damaged the valves or the keyway on the crank gear.  You should contact headoffice and let them direct the repairs.  Get this fixed before the warranty runs out, and keep the pressure on.

Good luck,

Paul

Answer
Paul,

They need to remove the head and check for damage. You can't have that much metal sucked into the intake without causing internal damage.  I suspect you'll find bits of steel trapped between the valves and the valve seats, as well as the top of the pistons.

Good luck,

Paul