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EC200 Control bugs

DIESEL engine, transmission and generator repair and maintenance discussion forum.
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Champ3555
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EC200 Control bugs

Postby Champ3555 » June 13th, 2022, 8:04 pm

Good afternoon all. I have been posting about my Cummins QSM11 engines not reaching full RPM. Specifically on the starboard side. I have had Cummins techs replace the starboard ECM and verified the engines are in good shape. This weekend I had a very strange incident. While starting the engines, after pressing the button on the throttle control, I tried to start the port engine first. When I turned the port key, the starboard engine started then the port started when I turned the starboard key. The port engine has not been wanting to start and I have been holding the button down while I turn the key to get it started.

Just two new symptoms to add to the lack of RPM on starboard side. Any ideas? I will be looking into switching the connections

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Re: EC200 Control bugs

Postby km1125 » June 14th, 2022, 8:32 am

Not sure about those specific engines or the ECUs, but when weird things happen like that it frequently points to a poor ground somewhere.

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