What is happening over 4000rpm?

[wawa]

That is where I'm heading now. Fuel pump is my next target cause last night the boxster was missing in all gear and at idle. Had a hard time getting back home. Stall a couple time. Start and die seconds later. Sound more and more like fuel pump.

Now, the fuel tank is full and I'm scared to go for a ride to brun fuel. Will have to fine à big container.

Later all
Chris

[Homeboy981]

KennyBoxster had the same problem due to MAF being a "newer" model than what our ECM expected. There is an upgrade to the software, or you can run an older MAF unit.

It took KB 3 MAFs and hours to figure out. There is a report out on it…Kenny transcribed it from German! Now that's devotion to fixing a problem!

Another problem was 2nd gear shifting, slight pause or engine cutout right after shifting. All due to the wrong MAF, or too new for the car to read correctly ALL the time.

We drove around for hours, and it was only intermittent at best. We even unplugged the MAF (do NOT personally recommend that) and it RAN BETTER!

Good luck!

[Jager]

Originally Posted by wawa

That is where I'm heading now. Fuel pump is my next target cause last night the boxster was missing in all gear and at idle. Had a hard time getting back home. Stall a couple time. Start and die seconds later. Sound more and more like fuel pump.

Now, the fuel tank is full and I'm scared to go for a ride to brun fuel. Will have to fine à big container.

Later all
Chris

Bad fuel pump will not necessarily throw a CEL. You now have the same symptoms that I had a few years ago... Bad fuel pump.