But why it say 4.0 Volts? bad ground or something? We try add new ground strap from body to alternator that seem improve little.

We been on that truck more than we drive. We put almost 200 miles after that now it all issues.


forgot to add

when it say 4.00 volt when we turn throttle to wide open and 4.00 went to 4.96 or 5.00 for wide open. Sudden it went back to 1.03 volt when we wide open it go 1.98.

Why it jump from 1.03 to 4.00 random? It run fine then sudden it happened again then it disappear then it come back again.