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Old 08-22-2019, 09:08 PM   #1
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Join Date: Aug 2019
Location: Michigan
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Ford E450 Chassis Powertrain Control Module Failure

We bought a 2019 Leprechaun 319mb which is on the Ford E450 chassis this past February. We have made 4 trips in it so far. It still has less than 5,000 miles on it. Unfortunately when returning from our last trip the engine shut down at a traffic light when we got of the expressway to get dinner. Had to have it towed to a local Ford dealer in (Brighton Ford). They diagnosed it as a Powertrain Control Module (PCM) failure, and replaced the module. Just picked it up Monday and it started up and ran the hour home with no problems. The issue I have is that the tech at the dealership couldn't really give me a reason as to why the PCM failed, and now in the back of my mind I can't help but wonder what is wrong with the coach that caused it. Has anyone had a issue with the PCM or any other control modules in their newer coach? Or does anyone have an idea of what could have caused the PCM to fail?

Thanks, Mike in MI

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Old 08-22-2019, 10:15 PM   #2
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Location: SE Arizona's Gila Vally
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Worked as a mechanic for 40+ years and through training and experience found that major component failure early in a vehicles life is usually caused by a cold solder joint somewhere on a board.
Next up was pin pushed back in a terminal socket followed by corrosion in a plug or socket.

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Old 08-27-2019, 10:36 AM   #3
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Some parts out of thousands are not going to perform well. It the nature of the beast. I bought a brand new Patriot, the dealer had to replaced the front disk brakes during the first 2,000 miles. No problems after that. It happens.
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Old 08-29-2019, 06:52 PM   #4
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Location: Sprung Leak, NC
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I would say it just occasionally happens. A bad part slipped through. I asked my Ford dealer how many they have replaced and said they average 2-3 a year across all the vehicle lines. So not a super common issue.

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