Vehicle: 2014 Dodge Ram 1500, 4WD, V6-3.0L Turbo DSL, Automatic Transmission
Problem: The owner brought his truck to the shop because the engine would intermittently stall while driving at any speed. It would also sometimes crank over but not start. The malfunction indicator light was not on.
Details: The technician connected a fuel gauge to check the low-side fuel pressure (from the in-tank pump) when the engine stalled or didn’t start. Luckily, the engine died after driving about two miles. The fuel pressure should have been between 65 and 101 PSI when cranking. When the engine died, the low-side fuel pressure was 0 PSI while cranking.
The tech inspected the power and ground at the in-tank pump connector. There was battery voltage and a good ground at the connector, so he removed the in-tank fuel pump for inspection. He found the pump cover had cracked and the inside connector was melted.
Confirmed Repair: The technician replaced the in-tank pump assembly. Problem solved!