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This has been happening for years. I have a 01 996 C2 Tip. It use to just happen on the track with less then 1/2 tank of gas. Car would stall for 1-2 seconds then start running again. It's just like the ignition was turned off and back on. I now always track the car with at least 1/2 tank of gas. I replaced the fuel filter last month and everything has been fine. I was at the track last weekend, no stalling, then on the way home with over 1/2 tank of gas, I was stalling every 30 seconds for 2-3 seconds then the car would start running again. It's just like the ignition was turned off, wait 2-3 seconds and then turn it back on. I filled up the tank and no problems.

Could there be any problems with fuel pump lines. I know there are all type of lines coming and going from the fuel pump and maybe some have broken free and with less then a full tank of gas they are getting some type of vapor lock. Thanks for your help.

Edited by Ken7258
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This has been happening for years. I have a 01 996 C2 Tip. It use to just happen on the track with less then 1/2 tank of gas. Car would stall for 1-2 seconds then start running again. It's just like the ignition was turned off and back on. I now always track the car with at least 1/2 tank of gas. I replaced the fuel filter last month and everything has been fine. I was at the track last weekend, no stalling, then on the way home with over 1/2 tank of gas, I was stalling every 30 seconds for 2-3 seconds then the car would start running again. It's just like the ignition was turned off, wait 2-3 seconds and then turn it back on. I filled up the tank and no problems.

Could there be any problems with fuel pump lines. I know there are all type of lines coming and going from the fuel pump and maybe some have broken free and with less then a full tank of gas they are getting some type of vapor lock. Thanks for your help.

Ken, these symptoms ca npoint to a faulty ignition switch. has it ever been replaced?? Do you get any codes when the engines "stops" unexplicably?? CEL flashing or whatever?? One thing you can do is "wiggle" the ignition key when you are idling and see if you replacate the stall condition. If so you'll know it is the electrical portion of the switch. DO a search for ignition switch here on the site and you'll see lots of dialogue and DYI instructions. Good Luck!! Demosan

:cheers:

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in the older Porsches there was a problem with the oil sump pump cutting out on corners on hot days after fast track runs... problem was solved when a screen was put on the sump pump intake. I wonder if this relates to an oil pressure issue rather than a gas issue? good luck on this one. kindly keep us posted...

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