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

I guess you change this to "solved" It was the power connections. The main relay terminals, and the ground lug were a little corroded. After I cleaned them up, the power is stable, and the MS work like it always did.

Thanks Everyone!

I did get inconsistent voltage on the power pin to the MegaSquirt.
A bit vague..... What constitutes "inconsistent"?...
The first time I checked, it was a good solid 12.5 volts. An hour or so later, it was varying from 9-10 volts. I am now thinking we knocked something loose on the ignition ...

It got up over freezing today, so I spent a couple of hours troubleshooting. I checked every wire in the cable to the MegaSquirt. Each pin is connected to what sensor it is supposed to go to. I also checked for shorts, but didn't find any. I still can't get it to talk to my laptop in the car, but it ...

I pulled the MS out of the car, and brought it inside. I can communicate with it fine in the house. It leads me to believe there is something I did to the wiring harness that is keeping it from working in the car. Whatever it is causes the injectors to constantly click (and the LEDs flash at the ...

I'd say the high ripple from a battery charger is more likely to mess with the code.
I'd first do a proper port check if you can't get Megatune or TS to recognise it.
"port check"?

EDIT: Nevermind, I see what you mean now. I did communications, settings, click to test, and it reported "no ...

Some new information. I can't communicate with the MS with Megatune, or Tuner Studio. The MS still sends pulses to the injectors, but appears to be dead otherwise.

Can above normal voltage kill part of a board? The battery was dead, so I put on a charger/booster, and I see that it is putting out ...

Does it connect to Tuner Studio ok - no error messages? The lack of pump pre-run and injector priming pulse makes me suspect a code problem. I'd be inclined to simply re-load it. All those should work normally with nothing connected other than power. Which makes a broken wire or whatever less ...

I don't suppose you have a stim, huh? That would quickly tell you if the issue is with the car or the MS.

Ken

EDIT: the left LED is the injection... the middle is WUE..... the right one is ACCEL....
Nope, I used pots, signal generators, etc to do the original testing. What I am hoping is I ...

I have a V2.2 board (green), that had been working since 2005. Today I was doing maintenance, like changing fuel filters, etc. When I tried to start it, I got strange symptoms. In the past when I turned the key to ignition position, I could hear the fuel pump, and the injectors clicked for a couple ...