Newish to this forum (used to have an account about 7 years ago lol)
I have a EUDM DX (d13b2 Carb) that I have converted to a d16z6, obd1
Dash loom is a jdm obd1 auto loom with the auto section looped etc
p28 ecu with RP17/18 re-soldered etc
walbro external pump
Vss cel code popped up, had NO power on the yel/white wire, swapped the vss, checked the fuel tank wiring, noticed the clutch plug was not plugged in, plugged it, had power..
Drove it.. got to the realm of vtec.. speedo sh*t itself, then no speedo, and a nice code 21.
My guess is a bad earth, but I would like to know what else that could be?
So to summarize;