Replace Water-Damaged Powertrain Control Module (PCM)
At 8:01 in
JH Diesel Flipped His MegaTruck Into Cleetus' Pond...Now We See If It Runs! (6.0 Powerstroke)
What happens here
Despite restoring fuel pressure and confirming the starter works, the truck still won't start via the ignition. The team suspects a deeper electrical issue caused by the submersion, likely affecting the Powertrain Control Module (PCM). The mechanic removes the old PCM, which is visibly water-damaged, and replaces it with a working spare. He explains that diesel engines like this 6.0L Power Stroke require significant fuel pressure (around 60 PSI) to run optimally, although they can sometimes run poorly with as little as 20 PSI. The white smoke observed during previous crank attempts is attributed to raw fuel being dumped into the engine, not oil, indicating an issue with fuel combustion or timing, likely controlled by the PCM.
Goal: Resolve electrical and engine control issues by replacing the water-damaged PCM.
Tools and materials
- Screwdriver — Removing and installing the PCM
- Wrench — Removing and installing the PCM
- Spare Powertrain Control Module — Replacing the water-damaged PCM
What they say
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What they say
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