Ok well. I put a thread out not to long ago. No one has posted anything back. My car his been misfiring for some time and stumbling a lot, can not figure it out. Anyways, as the car was idling today, I took off the spark plugs on the left bank and with a glove and flat head, held to 1 coil at a time, checked the firing/zap. It seems that the whole left bank is firing erratically. I then took off the main connector to all the coild for the left bank and it did not make a difference. Could it be the connector or am I going to have to follow the wiring all the way back to check for any breaks? I want to do this a simply as possible. Wondering if anyone else has experienced this problem. Any help would be nice. Thanks.

 

I think you would get better results posting this in the "LS1 Based Engine Tech" forum... a lot more traffic there.