Date:         Fri, 23 Apr 2010 20:24:34 -0400
Reply-To:     Michael Vickey <vickrail@VELOCITY.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Michael Vickey <vickrail@VELOCITY.NET>
Subject:      Re: Replacement engine running rich, FILTHY RICH!

TJ,

The green wire you mention is likely the connection in the harness for the
O2 sensor.

Once you resolve the issue with the green wire in the harness, and if you
still have the same symptoms, read the following:

The same symptoms can also occur due to a poor ground wire that goes to
terminal 19 in the ECU.

The ground wire (brown) to that terminal connects to the engine case. This
wire enters the engine compartment in the same sheath that carries the Hall
sender wires (distributor base) but it actually exits the sheath before
getting to the Hall sender. On your 87, it should terminate either on the
left top of the engine case (if you have a/c, look below the compressor) or
it may terminate at one of the 4 oil breather mounting bolts.

If it terminates on the engine case, clean it up and reattach using a new
bolt. If it terminates on one of the oil breather mounting bolts, suggest
you clean that up, but also make an additional ground wire that jumps from
the mounting bolt to another convenient location on the engine case.

Michael Vickey

88 DoKa 2wd 6-seater
89 Syncro DoKa Jagdwagen
90 Syncro Camper
99 Eurovan GL
06 Sprinter/Winnebago View

http://www.velocity.net/~vickrail/moshevw.htm