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Old 10-28-2017, 04:58 PM   #1
Junior Member
Join Date: Aug 2017
Location: Issaquah, wa
Posts: 19
Help identifying solenoids (fuel)

Hi All,

I am still a newbie.

I have a two terminal solenoid sitting on top of the back of the cummins 8.3L trubo engine. From what I can tell it manages the flow of low pressure diesel fuel. There is a line from the injector filter block before the injector pump and up to solenoid-1.jpg(see attached) then to two other solenoids/injectors(solenoid-inj.jpg) that are mounted on the intake manifold where the turbo pipe connects.

The first solenoid has two terminals neither were connected, I found what I believe is the positive wire laying next to it and cleaned/reattached. The second terminal is bent over and is I think soldered to the solenoid case/grounded.

Any thoughts as to what this does or ID would be greatly appreciated.
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Old 10-28-2017, 05:06 PM   #2
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Monaco Owners Club
Join Date: Nov 2002
Location: Columbus, MS
Posts: 33,681
Hi ! Welcome to IRV2! We're sure glad you joined the gang!

Sorry I can't help, that's waaay above my head! 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 10-28-2017, 05:25 PM   #3
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Might be a normally fuel open solenoid, maybe safety switch of some type.
2002 Monaco Executive 500 ISM
2004 GMC 2500HD 4X4
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Old 11-03-2017, 12:16 AM   #4
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Location: Issaquah, wa
Posts: 19
Hi all, I pulled the air intake off and the two what I thought were solenoids are actually electrical connectors to the grid heater and the fuel solenoid provides low pressure fuel when the starter motor is engaged below 50 degrees for cold starting.
Thank you for taking interest.
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Old 11-03-2017, 01:20 PM   #5
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It would help if you said what year and model of your motor home is. It looks like the
same system I have on my 98 Dynasty and mine doesn't work until around freezing.
There are two large glow plugs in the intake manifold and they heat up and when the engine is turned over that solenoid directs fuel onto the glow plugs and heats up the intake air to help the engine start.
36 ft 98 Dynasty
98 Suzuki Sidekick Sport 4 door
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Old 11-04-2017, 12:36 AM   #6
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Sorry, 1994 Dynasty with a 8.3 litre diesel. Sounds like the same system, however, mine uses a grid heater instead of glow plugs.

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fuel, solenoid

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