So now on my third O2... (This one a brand new one) and still have Low V.

Flowchart says either PCM or wiring next, so I guess my next bet is to get the resistance of the signal/return wires... They've been spliced to crap by the previous owner, so this could be my issue, yes? O2 not able to overcome the resistance of the line?

If this fails, I'll be looking for a new known good p2p-c12, unless someone else has a suggestion for a d16y8 manual ECU I should go after. Need to pass OBD2 emissions test.

Thoughts?

 

Did you measure the fuel pressure?

Did you use a multimeter to do the electrical tests indicated in the service manual?

 

Fuel pressure, not yet. Electrical per FSM , is what I was asking about - on the right track to that. My harness is a rats nest of splices so going to check resistance.

 

Measure the fuel pressure and fix the rat's nest.

 

Will do, thanks!