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Anonymous Posted on Sep 29, 2012
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1997 993 cranks but won't start. Can't hear the buzz of the fuel pump with starting ignition.

Worked fine the last few days, then last time after it started it died about 5 sec later. Suspect fuel issue or immobilizer.

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5 Related Answers

Anonymous

  • 4 Answers
  • Posted on Apr 22, 2009

SOURCE: car wont start .

You will not be able to hear the fuel pump on that model. First you have to determine if you get fuel and have spark. If it is a fuel problem, replace the DME relay first. Very common. They act up and fail without warning. Part is cheap and located in the fuse box. Next would be the fuel pump.
If it is spark related it may be the Flywheel Reference Sensors. There are two and the cost about $100 each.

Good Luck.

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Anonymous

  • 4669 Answers
  • Posted on Jul 05, 2009

SOURCE: The battery will charge and start the car but when

How old is the battery?

Molson02536

Harvey N Tawatao

  • 3854 Answers
  • Posted on Jan 11, 2010

SOURCE: After fuel fill and cap removal 2003 996 won't

Your fuel pump is on it's way out. it's common to happen in the winter time when your gas tank is low on fuel and gets refilled. What happens is the piston in the electric fuel pump wears after a few years of service, as the amount of fuel in the gas tank will moderate the temperature of the fuel pump. When gas is added in the winter, the gas is much colder and makes the piston and cylinder sleeve contract since it's made of plastic will contract much faster and when the fuel pump is reactivated. The clearance between the piston and cylinder have a lower tolerance, causing the fuel pressure to drop. This is why you may have to energize the fuel system twice by turning the ignition keys on "engine not running" for 5 seconds and then turning it off again and turning it on again for 5 seconds and then start the engine. You can have the garage check the fuel pressure and check the pressure bleed down time, which would help indicate for you to replace the fuel pump. But start with the simple and replace the fuel filter, this may get you more life out of the fuel pump. Good luck and hope this helps, keep me posted nad please rate.

Anonymous

  • 396 Answers
  • Posted on Jan 22, 2010

SOURCE: my 1977 924 is having a hot start problem ? at the

Check the timing and timing belt on this. Too much advance can make it overheat and hard for the starter to work.

gtyner

  • 280 Answers
  • Posted on Mar 11, 2010

SOURCE: 1991 Porsche 944. starts fine, runs, then stalls...repeats..

fuel pump and or filter is my first guess

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