Hello from Denmark.

i have a problem with my 991.1 C2S.

The engine pulls unevenly at medium throttle, below 4000 rpm.

There is no error code. Fuel pressure seems ok. And engine works and pulls normaly above 4000 rpm.

mileage is 60.000.

anyone experienced anything like this? Been at Porsche specialist workshop for several weeks.

 

Was the throttle body cleaned? I know Porsche says it’s not necessary but they can get junk built up in them. The one in my 997.2 had developed residue in the barrel of the TB right where the TB plate was.

 

sometimes just a recalibration of the throttle body is all you need as well.

 

Yes, I’d add some fuel cleaner for a few tank fills. I’d also run it hard. I think they call that an Italian tune up. Then I’d take it in to an Indy.