My 'A' bank coil and circuit back to the ICU is fine but the 'B' bank circuit causes the output of the coil to quit after ~1second.
When it does fire initially, it seems timed correctly wrt to bank 'A'.
I've swapped signal leads to the coils and the problem follows the 'B' bank circuit. I've swapped power amps and again, the problem follows the 'B' circuit.
It seems to be a problem with the Ignition ECU behind the kick board on the right side but I don't know what would cause it to work fine for a brief period and then stop.
I've checked and compared the signals are pin 10 and 14 of the Ignition ECU, 'A' bank and 'B' bank respectively and the 'A' signal is consistent in its waverings while the 'B' signal looks the same while spark is present but then seems to go away at the same time spark stops.
The engine won't start as there are other problems so I can't tell if this is only at idle or not but I would like to solve the spark issue first in any event.
I've never heard of an Ignition ECU failing in that way so I am thinking it might be an electrical connection issue of some sort but I'm not sure what connection issue would cause the signals at the Ignition ECU to be similar initially and then not.
Friday, October 7th, 2011 AT 10:26 PM