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Date:         Thu, 7 Jun 2001 21:59:06 -0800
Reply-To:     Mark Keller <kelphoto@ISLANDNET.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Mark Keller <kelphoto@ISLANDNET.COM>
Subject:      ECU or Harness or AFM  plug Malfuction Question
Content-Type: text/plain; charset=us-ascii

The causes of intermittent shorts or malfunctions could be linked to many causes. The official fix was posted, but essentially is a list of must do items which I can't seem to find.

Anyway, one or two come to mind. A ground strap is added from the AFM to the block. $4 at napa.

The connectors on the harness point to the ecu, on some models didn't have strong clamping, subsequent harness connector had addition compression rings to increase clamp force. Clean with electronic cleaner, I use Tarn x, the coat with Electric grease compound I use OX GUARD.

The third thing is the wire from the O2 sensor can be suspect, it is a coaxial wire to the ECU. The list has suggested a microphone type wire from radio shack et al is suitable.

And I would add to ensure the fuel pressure regulator and vacuum supply is accurate since the ECU bases it calculations blindly on these two values being right.

Sincerely,

Mark Keller


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