1985 928 Porsche Starts and Runs but....

Asked by Jun 07, 2013 at 10:44 AM about the 1985 Porsche 928 S Hatchback

Question type: Maintenance & Repair

My 1985 Porsche starts and runs great sitting at idle.  However, when I get in and drive it
dies as soon as I take my foot off the gas.  It has an air slide valve but no air idle control
valve that I can see.  I'm wondering what possible causes might be and am looking for the
top few items that fail commonly on this car.  I've only owned it a few months and love it
and it only has 50k miles on the clock....want to keep her running.

1 Answer


Check the fuel pressure regulator on top of the engine before the fuel rail(s).

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