LewTurboB5A4

Started a few weeks ago. I went away on vacation and the problem appears to have gotten worse not better since I left. I can get it to happen almost at will. Happens mostly on the highway. Im cruising with the revs pretty low, maybe around 2000-3000. If i punch it the revs start to climb to maybe 4000, but the car doesnt feel real strong, then the revs will drop a bit and it feels stronger from then on. Almost feels like the clutch isnt fully engaged, then it grags fully and continues on. But still doesnt seem like the boost is getting to the engine. I checked all the charge hoses and all the boost lines i can see from above and under the car, and every one looks ok. The boost gauge reads full boost when i step on it but i dont feel a big kick, only a little push. Also, it might be the colder weather, but I feel like I hear the engine working alot more. Before it seemed to be more of a mix of boost and engine. Now it sounds like the engine is working harder and I can hear the turbo spooling but it doesnt feel like they are connected. My guesses at this point are bad MAF, bad injectors, or maybe some other sensor sending wierd signals causing the fuel or timing or something to be cut when its WOT. Maybe blown diverter or N75? Anyone heard of this or have anything I can try to rule out one thing or another. No CELs. Drives pretty much normal off boost other than the louder than normal engine noise. Thanks in advance.

Joao

If your RPM's are jumping and the car isn't moving it might just be your clutch slipping.

JPRobertsons

Re: R&R your PCV system (replace all of the non-return valves).

LewTurboB5A4

What is this crap? Its like light brown puke colored liquid. Looks kinda foamy and has little clear bubbles in it. smells like oil. What the hell is going on with my car?

<img src="http://pictureposter.audiworld.com/126505/img_0573.jpg">

Mr. Mom

the oil is recirculated and burned off in combustion.


Take off you intercooler and you'll see a lot more.

Clean it and you may be god to go. Otherwise swap it for the stock n75

LewTurboB5A4

i just swapped the stock N75 back in too. going for a ride now. also, where that black UFO looking peice connects, its a metal pipe on that runs back to front on the passenger side of the engine, that metal pipe, i stuck my finger up in it to see if that was where the funny colored liquid was coming from and i got a bunch of black sediment that was stuck to the inside of the pipe? Like a pretty good amount. felt like little paint chips, but im guessing its oil build up? could this crap have clogged the N75 or some other valve? I just did an oil/filter change maybe 2 or 3 weeks ago.

LewTurboB5A4

im guessing the funny colored gas/oil whatever messed up the signal and the wastegate was open all the time. hence no power and weird revs. why is this liquid forming instead of the regular oil i used to see in this valve. the induction hose had a bunch inside too that the black UFO looking peice dumped into it. Is my whole intake system getting clogged with this crap? How can I stop this? How can I clean/get rid of whats there?

Mr. Mom

this is something that builds up over time as the oil vapors created in the cylinder head are routed back to the intake and burned. Many here (myself soon) have removed the PCV and are using catch cans.

I hope this works out.

LewTurboB5A4

signals. Also there was alot of carbon flakes, almost like little black paint chips, inside that metal pipe the PCV UFO looking thing connects too. Do you just plug the turbo inlet pipe and get a little collector to connect where the PCV UFO was? Whats that thing really called so I can stop calling it the UFO? Oil recuirculater valve?