I have been all over these forums trying to solve my issues on my new, (used) 04 Cayenne Turbo. It started with my car not accelerating normally, to then lurching and not shifting properly. That was mostly due to my Bank 1 MAF sensor failing. (By the way, bank one is on the passenger side) I replaced the DS with no difference, and took a guess and swapped the Rt. MAF to the left and acceleration is great as well as much improved shifting. I did still have a check engine light though. After searching for solutions I was able to find a vac hose leak by spraying throttle cleaner all over and waiting to hear a stumble...BINGO! The T-hose under the intake had rubbed the underlying pulley somehow and caused the leak....Increased idle in park...threw the above codes. Hose replaced. All is fine now! Even my Durametric lowering malfunction was finally cleared after 4 days of it not permitting my values. It saved now, and all my dash lights are off. Looks empty now. haha. Thanks for this forum and everyone who offered suggestions.

 

Now I just need to figure out what oil pump to buy so I can replace my tranny filter and change fluids. I have been told it will have to pump quickly. Any suggestions on a reasonably priced pump? Thanks again.

 

Glad you finally got it all sorted out! Was it the diverter valve vacuum hose? I'm hoping next weekend I can spend all weekend changing power steering pump and changing out the vacuum lines I couldn't get before.

So did you have to go all the way back through the lowering again to get it to save and clear? It was a bit frustrating but glad I did it. It looks so much better lowered.

As for pump I assume you mean for filling the trans? Motive Powerfill is probably the most recommended one although the Schwaben one ECS has looks pretty useful too. Whichever you choose definitely make sure it's one with a valve inline. Makes things a little less messy. Not much less, but a little bit.

http://www.ecstuning.com/Porsche-200...Search/Motive/