omvl millenium

Dunno about yours but my Bigas system picks up the engine revs off the negative side of the coil. A brown wire in my case , which recently fell off and gave the same symptoms as you now have.

Lee D

Brown wire should be connected to the coil -v to give it an rpm signal, also make sure you have told it the correct rpm signal type, number of coils, lambda probe type etc. If all that is ok, run engine at 3000rpm, change over to gas and watch computer screen on display mode and see what the actuator and lambda probe is doing. If it is running lean on the probe and also reducing the stepper position, then you need to tell it the probe is inverted, i.e. 1-0v instead of 0-1v. If memory serves me correctly, the lambda probe ought to be 0-1vstd, not square-wave. Tell it also to switch over during decel at 2000rpm initially until you get it setup. Should cal itself at 3000rpm, then you adjust idle bleed to get it in correct band at idle. Badger.

Thanks for the replies have now got unit running ok.Looks like it was a bad earth connection on the black wire, seems to be running pretty good on this unit only fault is it sometimes stalls when decelerating .It could be the air bypass playing up again I think as disply shows nothing strange

make sure overrun cut-off isn't set to too low an rpm, try and bias the system to be rich at idle naturally without the lambda correction, that helps. Badger.