The car developed a missfire problem a while back, the 60-2 trigger seemed suspicious as it had some marks on it. The box and connections was checked but showed no signs of a problem and the trigger wheel was replaced by a 12-1 triggerwheel built for a 1GT101 Hall sensor.
This 12-1 triggerhweel did however not solve the problem. The car now sometimes starts but start to missfire after a while, in some cases it start to missfire at once.
The trigger signal was scoped and found to be good, inside the box at the JP2 jumper the signal was a bit weak (2.6v square) because of the VR chip loading it but as expected the behavior didn't change after removing the R56 resistor.
A long time ago the P259 chip was damaged and it was removed for good. The P259 chip is usually damaged by bad ground but none was found at the time, one suspicious ground connection was reported by Simon when I was there yesterday. I fear that other damage could result if the ground is still bad after the P259 chip is removed.
I currently have the box here in the lab and I will try to stimulate it to see if I can recreate the behavior.
The car is running on 1.0.36 firmware and the config and msq is posterd here:
http://www.vems.hu/files/MembersPage/SimonMarmander/12-1/config.txt
http://www.vems.hu/files/MembersPage/SimonMarmander/12-1/table.txt
http://www.vems.hu/files/MembersPage/SimonMarmander/12-1/12-1.msq
-Jörgen
picture of the engine bay:
