Originally Posted by
EuropeanAM
Starter shouldn't have caused engine to shut down... as starter shouldn't be functioning once the engine is running!
Beyond that- the above description is a bit confusing, suggest going through things methodically, starting at the SOURCE: The Battery. Load test. Check connections. Printouts from Computer Diagnostic System so you know what that fault was. Be happy to review those if needed.
What is the voltage to the starter cable when the problem occurs (the one that goes from the starter mounted solonoid into the starter) if it is about the same as battery voltage you have high resistance in the starter. If no voltage or low voltage, you have high resistance in the circuit between that point and the battery, such as bad connections, master solonoid or slave solonoid.
While starter is actually cranking the voltage would be about 10 to 11.5 volts depending on many variables.
Voltage drop test from B+ battery post to the power point on the motor with key on and attempting to crank
Voltage drop test from B+ battery post (not the connector attached to it) to the starter motor cable (the one that goes from the starter mounted solonoid into the starter) While it is in failure mode while attempting to crank. Should be less than 1 volt in these tests
Do the same thing on the negative side to the starter case (ground to ground) again less than 1 volt
Total drop from both test above should be below 1.5 volts
Compression test at this point After it cranks normally