Tom,

Most likely there is corrosion on the spade terminal or connector for the
temp sensor wire. Location is just forward of the thermostat housing and is
a single-wire on the Syncro. The wire could also be broken.

Check that wire and connection first.

Michael J

87 Syncro parts van (for sale)
88 DoKa 2wd 6-seater
89 Syncro DoKa Jagdwagen
90 Syncro Camper
99 Eurovan GLS
06 Sprinter/Winnebago View

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