BigIslandSevens

iTrader: (4)

Hello everyone, here is what i have going on. I get spark on all four leads for the first few revolutions of the engine during cranking. Then i lose spark on all leads. Turn the key to crank again, same results. Spark , then none. I have repaired a cracked wire i found on one of the CAS sensors and checked the wires back to the ECU(PFC). Everything checks good here. I feel that i am losing a ground signal somewhere.

If i were to give the igniter and coil packs a dedicated ground( essenstially what the ECU does) will it cause any issues? Will it be a work around for the ECU providing ground as it is supposed to?

I have been trying to figure this out for a couple weeks on and off as time allows. It started as a sputter while driving, then progressed to cutting out while driving. I could grab wires at the coil harness connector, TPS harness and it would fire back up and run as usual. Recently it finally just cut off and will not come back.

Set-up as everyone always seems to ask during diag threads are as follows: single turbo, B&M ignition box, PFC, 1300 secondaries. I have not removed the B&M yet. That is my next thing to try tomorrow night after work. Thanks in advance for any help, i am burned out of diag. And feel i am chasing my tail so to speak.

Dave