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Registered
Join Date: May 2002
Location: Santa Barbara, CA
Posts: 4,821
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The failure mode of the DME relay is a "cold" solder connection of the relay contact on the PCB. Some say it was a batch from Hungary where they used improper solder. Vibration finally leads to microscopic cracks in the solder connection.
First it is highly intermittant and might be the cause for your issues. If you are handy with a soldering iron or soldering gun you can fix it in no time yourself.
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
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