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Join Date: May 2002
Location: Santa Barbara, CA
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You can measure the WOT switch (Use Ohm meter on the 35-pin DME plug) just to make sure the signal is seen at the DME and there isn't anything wrong with the harness.

Next, there is a remote chance that the DME doesn't recognize the WOT switch and the only way to check that is putting the DME on a bench tester. I would call this a long-shot, not impossible but not one of the more comon failure modes I came across in my time repairing many of these boxes.
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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 11-13-2013, 03:12 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #18 (permalink)