Boxster won't start...sometimes

[uabchris]

First things first, thanks ALL for the tips on my last post (coil pack on #6). Now new week, new issue. Had this problem about 3 years ago, then recently about once a monthly, now every time I gas up and go to start the car it spins but will not start unless I hold the gas pedal to the floor. It also runs like s*** for a minute or so then clears up (like the computer resets itself). Then I am fine until the next fill up. I initially thought fuel pump but that would not explain the fix from pressing the gas pedal. I replace the fuel filter with every oil change and run Techron religiously. New MAF recentyl. Full tune up recently. No CEL's. Fuel pressure reg?

Any ideas guys? :o

2000 Boxster

2.7 E-gas

157000

60K on new engine

Edited May 20, 2008 by uabchris

[Loren]

Get your fault codes read you could have pending codes.

Have you checked your ignition switch?

[uabchris]

Get your fault codes read you could have pending codes.

Have you checked your ignition switch?

Loren,

No pending fault codes and replaced the ignition about a year ago. I read on a past post where the dealer advised to hold the pedal while starting as I described, and it resolved the problem. Does this reset something? Being e-gas, do I have some type of electrical problem that is related to the pedal operation? It is funny this only occurs at fill up after removing and repacing the gas cap.

Thanks in advance!

Chris

[Baconaire]

Idle valve maybe? I would take a look at the throttle body, check for oil and carbon, clean it out, and take the opportinity to check the idle valve (if e-gas cars have one). Be careful with the paper gasket. Clean the idle valve with MAF or throttle body clearer and accuate the valve when cleaning. Just be care becuase its a pricey little thing. Could just be bad gas, or water in the tank. Also check oil fill cap, and consider replacing gas cap. Just brainstorming.

[Loren]

No Idle Control Valve on egas cars.

It would not hurt to clean the throttle body but that is not likely the starting problem.

What did you use to check the fault codes?

[uabchris]

No Idle Control Valve on egas cars.

It would not hurt to clean the throttle body but that is not likely the starting problem.

What did you use to check the fault codes?

Just cleaned the entire throttle body with MAF cleaner during tune up. I used a standard OBD-II scanner to pull the codes. Still driving daily and no problems except at fill up. I wonder if anyone else has experienced this problem?

Any other info is greatly appreciated!

Thanks again,

Chris