Dodge Cummins Diesel Forum - View Single Post - Fuel Shut Down Solenoid

argve · 02-23-2006, 06:00 AM

Alrighty... then...

So let me get this straight... You apply voltage and the solenoid should pull UP on the lever allowing fuel to be pumped through by the injection pump then when you remove power it should shut down the system by allowing the lever system to snap back into position...

Or is it like this...

You apply power and the solenoid pulls the lever up (again allowing fuel to be fed) then when you REVERSE the voltage through the coil it will SHOVE the lever back into OFF position.

Reason I ask is today I could not get my truck started at work and I popped off the electrical connector on the FSS and I had 12v between the two outside wires (red and black) So I plugged the connection back in and lifted on the lever assembly - I felt it sort of lock/pop into the up position then turned the key the rest of the way to start the truck (the key was already in the RUN position) then when I pulled into the garage I shut the key OFF - engine stopped - tried to restart and again no start.

Now from reading on Larry B's website ( POKE HERE ) he was selling a diode to put on the FSS so that the starter contacts can't back feed current to the solenoid and burn it up. I get the feeling that my 2nd thought pattern (reverse polarity) fits what he is saying... Am I all wet on this or not...

I'm thinking that my problem may be that my solenoid rod has become gummed up with 200k miles of road grime and just needs to be cleaned along with a new rubber boot installed to protect it.

So this leads me to another question...

Can a guy just toss the FSS over his shoulder on the bench and keep driving the truck by just manually getting under the hood to either start or shut off the engine... Reason being is I don't have time right now to correct this problem (busy schedule) and we are taking a trip this weekend in the truck and I won't have time to fix it until possibly next weekend or so... Basically I don't want to get stranded in the truck somewhere because I don't have time to fix it correctly.

__________________
Travis

1995 Dodge 2500 Ext Cab, 2wd, Bolt Action. Remember she's just a little ole six banger
#10 Fuel Plate, 3K GSK, AFC Kit, 60lb exhaust springs, Pac-Brake, Star wheel adjusted a wee bit - 3.5 rear gear with Lock-Right locker - Prime-Loc fuel filter relocation system, ATS 3 Piecer.

02-23-2006, 06:00 AM	#5 (permalink)
argve Cummins Fan Join Date: Dec 2005 Location: Fort Wayne - Indiana Posts: 55 argve's Truck Pics	Alrighty... then... So let me get this straight... You apply voltage and the solenoid should pull UP on the lever allowing fuel to be pumped through by the injection pump then when you remove power it should shut down the system by allowing the lever system to snap back into position... Or is it like this... You apply power and the solenoid pulls the lever up (again allowing fuel to be fed) then when you REVERSE the voltage through the coil it will SHOVE the lever back into OFF position. Reason I ask is today I could not get my truck started at work and I popped off the electrical connector on the FSS and I had 12v between the two outside wires (red and black) So I plugged the connection back in and lifted on the lever assembly - I felt it sort of lock/pop into the up position then turned the key the rest of the way to start the truck (the key was already in the RUN position) then when I pulled into the garage I shut the key OFF - engine stopped - tried to restart and again no start. Now from reading on Larry B's website ( POKE HERE ) he was selling a diode to put on the FSS so that the starter contacts can't back feed current to the solenoid and burn it up. I get the feeling that my 2nd thought pattern (reverse polarity) fits what he is saying... Am I all wet on this or not... I'm thinking that my problem may be that my solenoid rod has become gummed up with 200k miles of road grime and just needs to be cleaned along with a new rubber boot installed to protect it. So this leads me to another question... Can a guy just toss the FSS over his shoulder on the bench and keep driving the truck by just manually getting under the hood to either start or shut off the engine... Reason being is I don't have time right now to correct this problem (busy schedule) and we are taking a trip this weekend in the truck and I won't have time to fix it until possibly next weekend or so... Basically I don't want to get stranded in the truck somewhere because I don't have time to fix it correctly. __________________ Travis 1995 Dodge 2500 Ext Cab, 2wd, Bolt Action. Remember she's just a little ole six banger #10 Fuel Plate, 3K GSK, AFC Kit, 60lb exhaust springs, Pac-Brake, Star wheel adjusted a wee bit - 3.5 rear gear with Lock-Right locker - Prime-Loc fuel filter relocation system, ATS 3 Piecer.