Morning. Have tried tuning rebuilt MS6 for months. Have constant issues with stumbling idle and stumbling/stalling performance when running - similar to Joseph Conley's situation. I have reflashed the ECU, it runs fine for 12 -15 minutes then starts stumbling again. I stop, reflash, same thing...
Joseph,
Were you able to correct your problem?
I have had similar problems from a full rebuild and have not been able to identify the issue.
Thanks,
Mike
Howdy,
Working on MS6 rebuild. Cannot properly. Dealer installed a 370 CA lawn and garden tractor battery. Constantly recharging; probably playing havoc with PCM line voltage. Installed new "full size" battery. Need to reflash ECU/load new map?
Thanks,
Mike