have setting problems with knock retard?
Posted: Sat Oct 11, 2008 2:21 am
I have knock settings problems. I have MS2 with code 2.88. Boris knock sensor wired through IAC2B (no idle control) strait to JS4, noting that Boris sensor is 5v so it can be handled directly. With the default megatune settings (threshhold(V) 0v, knock threshold 2v) I get a slow knock retard 1 degree at a time. Knock disabled, the problem is not there. When setting the Threshold(V) to 1.5v I get a constant 3 degrees of retard and no more (see end of datalog). When I set it to 3v I get none at all. Megatune seems to act independintly of the knock sensing unit. When I adjust the pot on the sensing unit to make the light turn on I get no corresponding reaction in megatunes regardless of the settings.
When the knock light is on I get 0 volts at JS4 and no light 5 volts so it must be a setting problem. I have rebooted the code with no change. could someone please take a look at my MSQ and direct me on what to do as I'm sure it's a settings problem but what. Also attached is a datalog where you can see what's going on.
Thanks, Vincent
When the knock light is on I get 0 volts at JS4 and no light 5 volts so it must be a setting problem. I have rebooted the code with no change. could someone please take a look at my MSQ and direct me on what to do as I'm sure it's a settings problem but what. Also attached is a datalog where you can see what's going on.
Thanks, Vincent