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Fuel cutoff solenoid question #807200 04/22/07 12:57 AM
Joined: Jan 2005
Posts: 71
L
lamby Offline OP
Getting the Wheeling Fever
Howdy all,

I am down to just the fuel cutoff/shutoff solenoid left on the original wiring harness. Everything else has been absorbed back into the jeep wiring harness. My question is, does the solenoid take a straight 12 volts? I threw a voltemeter on mine, and it reads 11.11 volts, but what I'm concerned about is the amps. I don't know if there's a current limiting resister built into the engine control module or not. Can I just wire in a switch with battery 12v on one side and the solenoid on the other?

Related question--has anybody ever switched their cutoff solenoid over to a manual (non-electrical) shutoff? Sort of like a manual choke.....

Thanks all!


lamby
-----
1979 DJ-5G Postal Jeep with 1981 Isuzu Pup engine/tranny
Re: Fuel cutoff solenoid question [Re: lamby] #807201 04/22/07 06:02 AM
Joined: Dec 2003
Posts: 121
Paul223 Offline
Wheeler
Lamby--

The fuel cutoff solenoid is designed to work on 12 volts m/l and will actually be OK from around 8 volts to 15 volts. The solenoid draws about 1.5 amps at 12 volts.

There are versions of the VE pump which do have a manual fuel cut lever mounted in the side of the top cover.This is usually in addition to the electric cutoff. For safety I think. The older Dodge Cummins, tractors, and marine pumps tend to have the mechanical shutoff. It could be added to a C223 pump but it would be a bit hard to do.

Paul

Re: Fuel cutoff solenoid question [Re: Paul223] #807202 04/22/07 04:39 PM
Joined: Dec 2003
Posts: 354
A
acy76 Offline
Mudrunner
Lamby - I found that an easy solution which provides stock operation is to use the (former) ignition coil +12V as the cutoff solenoid's power source. That way it operates with the key just as it would from the factory.


1988 Isuzu Trooper LS
2.8l Isuzu 4JB1-TC intercooled turbo diesel
www.dieseltrooper.blogspot.com
Re: Fuel cutoff solenoid question [Re: acy76] #807203 04/23/07 02:49 AM
Joined: Jan 2005
Posts: 71
L
lamby Offline OP
Getting the Wheeling Fever
Perfect. Thanks Paul223 and acy76. Just what I needed to know--didn't want to burn my solenoid up by feeding it too much juice. But if it can handle the 12v that feeds the coil, I should be good to go.

Maybe someday in the glorious future, I'll get around to putting a mechanical shutoff on there

Gracias,
<img src="/forums/images/graemlins/smile.gif" alt="" /> <img src="/forums/images/graemlins/smile.gif" alt="" />


lamby
-----
1979 DJ-5G Postal Jeep with 1981 Isuzu Pup engine/tranny
Re: Fuel cutoff solenoid question [Re: lamby] #807204 04/24/07 03:29 AM
Joined: Dec 2003
Posts: 354
A
acy76 Offline
Mudrunner
It should work just fine. That's what I've done on my conversion and no issues at all.

I forget, what did you end up doing after the Jeep was damaged? I guess I could just search for old posts... feeling lazy.


1988 Isuzu Trooper LS
2.8l Isuzu 4JB1-TC intercooled turbo diesel
www.dieseltrooper.blogspot.com
Re: Fuel cutoff solenoid question [Re: acy76] #807205 04/24/07 06:14 AM
Joined: Jan 2005
Posts: 71
L
lamby Offline OP
Getting the Wheeling Fever
I did what any c223 fan would do--I tore the whole jeep apart, moved it over to a new frame, and put it all back together. Upgraded the fuel lines along the way so I could confidently run bio-diesel. Fixed a couple other things while I was in there..... Just now getting time to focus my attentions on the engine again--which has just kept on working for me the whole time.


lamby
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1979 DJ-5G Postal Jeep with 1981 Isuzu Pup engine/tranny
Re: Fuel cutoff solenoid question [Re: lamby] #807206 04/24/07 05:07 PM
Joined: Dec 2003
Posts: 354
A
acy76 Offline
Mudrunner
Lots of work. Glad you saved it, though - it's definitely a unique vehicle.

Last edited by acy76; 04/24/07 05:08 PM.

1988 Isuzu Trooper LS
2.8l Isuzu 4JB1-TC intercooled turbo diesel
www.dieseltrooper.blogspot.com







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