[fleetwood96]

OK all you V864 "experts" out there, I'm still uncertain why the computer will not kick down to 6 and 4 cylinder modes. I checked out the transmission connector on the driver's side and see a two wire connector (round) where the leads are perpendicular to each other - it is the only wiring in the area so I presume this is the switch which tells the computerto go into 4 or 6 cylinder operation. The wires look OK physically at the connector, and then run to a big wiring loom and become hard to trace where they go.

I even unhooked the connector and probed the wires with a test light looking to see if either wire was a GROUND lead or was +12v hot. Neither wire was ground or hot, so I'm not sure if this is good or bad - maybe bad as another post indicated that this switch allowed ground to go to the PCM when the transmission is in high (3rd) gear.

So.... while I'm waiting for my '81 service manual to arrive in the mail (courtesy of Ebay) does anyone have any other thoughts as to where the disconnect might be (either under the hood or at the computer box itself)?

Thanks!
Doug