I've got this machine that came in that had just died on customer,and after several codes for 0/2 sensors and cam sensor codes have traced back no cam signal to no ground at the cam sensor. Cleaned out connection to ecm, and machine starts and runs for about 1 minute or so then dies suddenly. It will start back up but about a minute it will die again. Could It be something in the ecm getting hot and shutting machine down? The serial number is G813V01837F ,It has the GM 4.3 on LP
I have noticed the just before it dies my voltage to the coil jumps up around 65-70 volts on my meter, don't know how that's happening, maybe the alternator is going out. Just replaced the alternator. I'll does The same thing.