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

I had my system working on my car. It started and ran quite well. I tried to make a change to get the VE and afr maps to read correctly by changing from a NB to WB O2 setting in the cfg files. This would match the real configuration that is on the car. Now the motor will start and quickly dies right away. It will do this repeatedly. If I pump the accelerator pedal when trying to start it, it will sputter for a longer time, then die. I can watch the afr on the MT and it leans out and then dies.

In MT when I try to start the car I get the afr and rpm readings. When I try the Jimstim, I cannot get either. I tried tracking the voltage from the Jimstim pots for O2 and rpm and get the proper readings all the way back to the db37 on the MS board.

This last time trying to start the car, the motor would continue to run as long as I kept pumping the gas pedal and kept the rpm up. The afr was reasonable as long as I kept pumping. If I stopped pumping, the afr leaned out and the motor would die.

I have a MS 2.2 V3 board, MT 2.25 P3, Embedded code V2.89

'56 Desoto Hemi motor 335 cu. in. displacement.
GM TBI from a 350 Chevy, 55 lb injectors
GM idle air controler
GM water and air temp sensors
Mopar electronic distributor to the relay board
relay board to the MSD 6 ignition box
Innovate wide band O2 and controler

I feel that it is very possible that I did something in the config file or some other thing that has caused this problem. I am getting some computer savy help tomorrow and I think we will try to start from scratch to reinstall everything. It worked before I messed with it. It should again.

Is there anything that I should know about starting over that is not likely to be obvious to me?

Thanks to all who have helped me before and may do so again. Bill

You'll want to fix the short issue mentioned in the other post first...

Is this a V2.2 or V3.0?

This is a V3 board. I will try tracking the short back to find it. I need to check the schematic but I think the 12 volts comes into the MS on pin 28 of the db37. I'll work back from there.

We were able to get the rpm and O2 to work on the JS by adjusting the board pots. I guess this matched the MS to the output of the JS. Then the short thing happeden and spoiled all the fun.

Thanks, Bill

this thread was kind of moved over to the troubleshooting forum and I had a shorted D19. This repair fixed the problem and I am up and running again. Thanks to all. Especially Matt. Bill Klein