projectteg wrote:
I don’t normally get many of the 1980 boards into my shop for socket/vtec conversion work and I have never ran across this issue before. I have a p75 that I’ve converted to vtec and it’s throwing a code 21 once vtec is approached on the engine sim. I have chipped all these the same with success, I’ve never had one like this act up before. I have swapped 4 5151 hi sides and a few of the q26 units out to rule out them for being the issue.
It occasionally throws a code 22 when extensively testing on the sim.
If you guys might have any advice or possibly a p75 schematic that I can trace back and make sure all is there.
thread resurrection lol
Did you make sure to jump J10 ? I found if leaving J10 unjumped triggers a vtec solenoid or pressure code (forgot which one exactly).