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Join Date: May 2002
Location: Santa Barbara, CA
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Quote:
Originally Posted by cabmando View Post
Put a fuel pressure gauge back at the fuel rail test port. Get a noid light and test for injector pulse. Get and I can't stress this enough a KNOWN new good DME relay. Is the engine original to the car or was it put in by the P.O. could have crossed the Speed and Reference sensors when installed which will keep it from firing.
If he has spark it clears the sensors (he has confirmed that). If the fuel pump runs during cranking it clears the DME relay (check with DVM on fuse).

what's left is: No fuel

- no fuel pressure (clogged filter, etc.)
- injectors stuck (very likely after long sitting)
- bad DME with fuel output stage (due to short or random)
- bad DME (P&H driver due to mis-wired tachometer)

Ingo
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1974 Targa 3.6, 2001 C4 (sold), 2019 GT3RS, 2000 ML430

I repair/rebuild Bosch CDI Boxes and Porsche Motronic DMEs
Porsche "Hammer" or Porsche PST2, PIWIS III - I can help!!
How about a NoBadDays DualChip for 964 or '95 993
Old 04-23-2014, 06:57 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #11 (permalink)