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Old 10-15-2016, 11:09 AM   #1
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Join Date: Oct 2016
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Cummins fuel open/shutoff solenoid failures

I have a Cummings 300 hp 8cyl that failed to start due to the solenoid that opens the fuel line overheating and failing. I replaced the solenoid but the new one failed after a few starts , the top swelling up and black melted plastic pushing out of it. When I open the fuel line by hand the engine fires up straight away and runs fine. The electric wires into this solenoid are red,black, and white, 14 gauge . What would be causing this overheating? Is there another relay failing to shutdown the amperage? This is in a 1996 Holiday Rambler Imperial 39ft. I would include a picture of this solenoid if I knew now to add one.

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Old 10-15-2016, 11:34 AM   #2
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Join Date: Jul 2014
Posts: 5,498
Don't know your solenoid but some have 2 coils in them.

First coil is strong to pull it in and second is a hold on coil.

I believe one should be powered while cranking and the other only in run mode.

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Old 10-15-2016, 12:02 PM   #3
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Location: Columbus, MS
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Hi Jerry! Welcome to IRV2! We're sure glad you joined the gang!

Sorry I can't help with your problem! Keep her between the ditches!

Good luck, happy trails, and God bless!
Joe & Annette

2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
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Old 10-15-2016, 12:53 PM   #4
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Ah so, Cummins

Welcome to RV'ing!

'97 Country Coach Intrigue
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solenoid, cummins, fuel

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