fuel shutoff solenoid PROBLEMS - Dodge Cummins Diesel Forum
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post #1 of 17 (permalink) Old 12-11-2009, 05:56 PM Thread Starter
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fuel shutoff solenoid PROBLEMS

I am still having problems with this thing.
I have replaced the:
fuel shutoff relay
fusible link
fuel shutoff solenoid
I re-adjusted the crank position sensor, was at .070 now is at .050 and all gauges are now working properly.

The problem is the FSS will not pull up to start fuel flow. It will stay up with the key on and manually pushed up so that one person can start the vehicle.
Starter functions fine.
Alternater is brand new.

What can be left to check?

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post #2 of 17 (permalink) Old 12-11-2009, 06:09 PM
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Instead of throwing parts at it, why not do some diagnosis?

Do you have supply power from the battery at the relay?

Are you getting power from the starter when its engaged?

Is the ground to the relay good?

2015 3500 laramie dually. 6.7, aisin, 4.10s, bone stock... (for now )
2014 forest river XLR 395amp, 42.5ft of truck killing, wind catching, toy and booze hauling, fun...
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post #3 of 17 (permalink) Old 12-11-2009, 08:30 PM Thread Starter
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Thanks, ykdave
I have been following the advice of the other cummins experts and am running out of things to check. This is a partial list of the stuff I've done.
The scantool does not show any codes, everything appears to be functioning properly, except the FSS at start up.
Thanks again
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post #4 of 17 (permalink) Old 12-11-2009, 08:57 PM
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Check that the small brown wire at the starter isn't corroded or disconnected.

Bill
'95 2500 4wd auto
'95 3500 5 speed heavy hauler
Stock for one day
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post #5 of 17 (permalink) Old 12-11-2009, 09:01 PM
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dang i was told that the solenoid was 600$ from dodge, haha my cousin just uses a clutch cable to kill the fuel on his 12 valve

1994 dodge, 4x4, nv4500, single cab long bed, autometer guages, #100 plate slid, exhaust, and cold air intake.
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post #6 of 17 (permalink) Old 12-11-2009, 09:02 PM
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scan tool wont tell you anything, the PCM really doesnt do anything on these trucks!

2015 3500 laramie dually. 6.7, aisin, 4.10s, bone stock... (for now )
2014 forest river XLR 395amp, 42.5ft of truck killing, wind catching, toy and booze hauling, fun...
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post #7 of 17 (permalink) Old 12-12-2009, 08:36 AM Thread Starter
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My mechanic dropped off the scan tool, so I tried it.
The solenoid was 129.00. It works just like the old one did. I have a spare now that may never be used.
I'll check the wires at the starter again, they looked pretty good the other day.
Thanks.
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post #8 of 17 (permalink) Old 12-12-2009, 10:44 AM
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As stated previously, have you checked to see if you are getting current to the fuel shutdown relay? What about at the connector to the fuel shutdown solenoid? Definitely sounds like you are not getting current to the pullup windings on the fuel shutoff solenoid. Also, would be a good idea to update your sig, so we know what year truck you have. On the 98 Ram there is fuse(fuse# 9) on the dashboard, which is for the fuel shutdown relay, but I do not know if this is the same for the 94-97 year trucks.

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post #9 of 17 (permalink) Old 12-12-2009, 04:25 PM Thread Starter
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FINALLY ! ! ! Resolved.
The dilholes at the parts shop sold us the wrong relay. Yes, I told them that I need the one for FSS.
We took apart the larger HI-RAM relay and there was a little corrosion in there so we shook it and picked at it and it started to function properly. The new one shows up tomorrow, it's a $70 relay, getting it for 40.
Thanks for all the advice and information, I've learned alot, and no thanks to the parts store. I won't mention their name but it's O'reilly's. Oh yeah they also sold my son the wrong fusible link.???????
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post #10 of 17 (permalink) Old 12-12-2009, 05:45 PM
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Good job. I have found that most of auto parts people know nothing about diesels. If at all possible, I always order my parts from a reputable on-line parts distributor like Genos Garage, Wicked Diesel, GDP, and so on. They are very familiar with our trucks and typically have a lot of diesel experience.

Glad you got it fixed!

98 Ram 3500(SRW Convert) 4x4 Quadcab,HP215 IP(15.5*,4K GSK,60lb springs),DAP 5x.016 SAC injectors,AFE Filter, BD Twin Turbos, 4" exhaust, gauges,47re stage 5 billit in/out shafts,dunrite VB,727DD pan,ATS 5-star TC,Borgeson gear box/shaft,3.54 gears.
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post #11 of 17 (permalink) Old 12-13-2009, 07:54 AM
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Quote:
Originally Posted by fishernut View Post
My mechanic dropped off the scan tool, so I tried it.
The solenoid was 129.00. It works just like the old one did. I have a spare now that may never be used.
I'll check the wires at the starter again, they looked pretty good the other day.
Thanks.
Where did you get a solenoid for $129?
Last time I checked they were in the $350 range.
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post #12 of 17 (permalink) Old 12-13-2009, 03:11 PM Thread Starter
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That solenoid came from Pensacola Deisel, a deisel shop in FL. I purchased it off of ebay. It came with two new brackets and all bolts etc. You cannot use the old bracket, the new FSS bolt spacing is tighter.

I will sell the new one if anyone is interested, and put the old one back in.
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