My car is getting false knock in the top end, usually in the mid to top of 3rd and on.... I had a full tank of 99 octane in with a 93 octane setup and still getting the knock....
Wierd thing is that it goes up and down while I'm still in WOT. It will accelerate fine, then get knock, go up higher, back to 0 kr then back up again... you can feel it retarding and then adding back in timing all during the same WOT pedal press.
Could this be the knock sensor? ECM? Chip? I've also had some backfiring after startup on acceleration, it runs really rich for a while, and eventually starts running correctly. it will stay in the 700+ O2 level at idle, and then just kinda click back to normal outta nowhere.....
Are these signs of something specific. Could the IAC have anything to do with my problems? I haven't set it since I put the new one in.....
Wierd thing is that it goes up and down while I'm still in WOT. It will accelerate fine, then get knock, go up higher, back to 0 kr then back up again... you can feel it retarding and then adding back in timing all during the same WOT pedal press.
Could this be the knock sensor? ECM? Chip? I've also had some backfiring after startup on acceleration, it runs really rich for a while, and eventually starts running correctly. it will stay in the 700+ O2 level at idle, and then just kinda click back to normal outta nowhere.....
Are these signs of something specific. Could the IAC have anything to do with my problems? I haven't set it since I put the new one in.....