Spark advance excessive for unknown reason?
Hi guys,
I keep receiving knock sensor errors and when I review my log some seem to be occurring at idle.....I'm reviewing one segment which shows idle 611rpm, map 47, speed & tps 0 but spark is 25.
At 0 speed & tps it should be the idle spark advance table referenced....which shows 4 degrees.....not 25.
Does anyone have some ideas on where any additional spark is coming from? The underspeed figures are no where near that large & the IAT table only subtracts as does the ECT table.
I'm just mystified why it shows that much advance - unless maybe a faulty sensor somewhere?
I also have knock sensors going off driving at 100k/h that I haven't been able to solve either.....but that I suspect is maybe knock sensors faulty.....but I don't know why spark would be so advanced at idle.
Add to that I also have large inconsistencies with the 02 sensors....at 50kh at 959rpm bank 1 is 117mv & bank 2 is 838! Does anyone know what on earth could be causing that? I swapped them recently too for new Repco ones. It's not only bank 1 that drops though...in other segments its the opposite. Ahhhhhhhh!
Any help is greatly appreciated. Cheers