Mystery Problem, Limited RPMs

[virgosunleomoon]

Hey Peeps,
This is my first post on here. Let's see if I can make it count.

2000 Boxster, 54k miles. It's had the rough idle thing since I bought the car. once it gets warm, the idle floats up and down from 500-800 rpms or so but only at an idle. Everything else runs great. BUT...

Today I got it home, turned off the car, ran inside, came out, and the car wouldn't start. crank like crazy but it was like there was no spark or fuel (crank sensor....) I put the gas to the floor and it starts. I take it to the gas station. fill up on 93 octane. turn the car off, wont start again. several minutes later, she starts. (crank sensor....) I drive it home, park it where I am ready to put it up on jack stands. Shut it off, same thing, hard to get restarted BUT, this time... omg.. this time, the idle is at about 1k, and i can put the gas pedal to the floor and the revs slowly come up to 1400-1500 rpm and then fall back down to 1100 rpm. the revs come on and go off slow.

No codes being thrown...

I am thinking fuel pump. My mechanic thinks maybe its related to the air oil seperator and its some kind of vapor lock.

Internet Porsche gods! Heed my call! What the hell is going on here!?

- Patrick
Syracuse, NY


*** Problem solved 2 weeks later ***
Spoiler Alert

Car threw Code P1502 which is "Throttle Jacking Unit Spring Test" so I took the throttle body apart and cleaned it real good and reassembled. Reset the EGAS pedal "Thing" by turning the key to on for 1 minute, back to off for 10 seconds then starting the car, problem persisted, so I then used the code reader to clear the code, car fired right up. I spent a lot of money on parts and tools I didn't need but I learned a lot. Worth every penny. Enjoy this thread.