MSefi.com read only forum (Jan.15,2018)

I sent the ECU back to Phil at ExtraEFI who found a bad solder connection, all sorted and returned within 4 days - thanks Phil

Thanks for your thoughts, it seems to be an ecu fault so I have sent it back to the builders to check and rectify. I should get it back in a few days and will post report

Right, I shall try the 1.5v while it is idling to see if TS is stable. Won't be until Monday though.

Thanks again

What would happen if I connected the + of a 1.5v battery to the lambda wire to the MS? Would help indicate if the problem was techedge or MS?

Thanks for this Phil. I am away from the car until Sunday evening. I will try and confirm all you have suggested then.

I don't have a stimulator as I bought MS ready built, is there an easy way of supplying a steady voltage between 0 - 5 as a trial?

That's the thing, there seems to be nothing else wrong. When on tick over every trace on a data log seems to be pretty stable except for the AFR - puzzling!

I have calibrated the AFR table and all the grounds are as described by Dave. The ground link is removed from Wlin-

The WBlin- is groundedto the engine block along with its heater and the MS grounds, TPS and temp sensors.

Megasquirt AFR gauge swinging wildly

Hi All

I just got my Zetec SE 1.6 running on Megasquirt 2 with Techedge 2J2 wideband O2 sensor. I have it ticking over nicely by adjusting the fuel and spark to achieve the lowest MAP. The problem I have is that the AFR gauge on the Tunerstudio screen swings ...