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Re: D-Jetronic

Couldn't he just look at the VW part number on the ECU, paying particular
attention to the final letter in the part number.  Muir does have a good
writeup of what ECUs are interchangeable given this final letter...

69 auto FI square
73 FI fasty


To:   type3@vwtype3.org
cc:    (bcc: Douglas Brashear/AMS/AMSINC)
Subject:  D-Jetronic

> I think Muir has a section on this, and all D-Jet ECUs are not the
> same...some have provisions for the head temp sensor,

All ECU yesrs had circuitry for the head temp sensor

 others have
> provisions for the 5th injector, etc.

Even for the cars that had the 5th injector (aka cold start valve),
the circuitry never went through the ECU

  The components that all the FIU
> engines had were not necessarily the same through the years, either, so
> ECUs changes to make up for the differences.


  Check Muir for a complete
> description (because I think a few were interchangeable).

Muir is probably one of the worst sources of good info on the FI.  It
IS fun to read however.  Very few ECUs are good interchanges, but
most people won't know the difference.

Jim Adney, jadney@vwtype3.org
Madison, Wisconsin, USA

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