Hey Doc,
I was wondering about the CPS so I searched and found this. Not sure what its function would be if there is indeed a regular distributor. Maybe just to provide input for OBDII misfire detection? If that's all it does it I guess it couldn't be Vince's problem anyway, even if it were defective.
http://cgi.ebay.com/ebaymotors/91-92...spagenameZWD1V