Ag955S

While driving 04 Cayenne S solid CEL came on the panel. Check for codes and pulled up P2177 and P2179 codes from D. Tool. Pulled out MAF's and cleaned with CRC Mass Air Flow cleaner and let dry. Reinstalled MAF into car. Cleared codes and everything was fine. 200 miles later the CEL comes on again, but Cayenne sputtered as I slowed down on freeway exit. Drove another 1/4 mile to house. Checked for codes and P2177 and P2179 came up again. Tried to drive Cayenne up driveway,but would loss idle and stall with increase acceleration. Also, car would stall after starting engine and allowing to idle. There is also a periodic clank sound coming from driver's side wheel well/engine compartment after car stalled a couple of times. Trying to do research on codes by not much information. Any suggestions and directions to troubleshoot problem?

mudman2

Sounds like a fuel pump, check the fuel pump fuses