Water in fuel - Dodge Cummins Diesel Forum

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post #1 of 14 (permalink) Old 09-06-2009, 01:10 PM Thread Starter
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Water in fuel

Ok so i noticed my Water in Fuel light was on today. Not sure when it came on, but i know it at least didn't happen untill i accidently grounded out the battery.

well i drained about a pint of fuel out through the separater, all looked clear, the truck runs fine, no hesitation, no sputtering, no idling issues, but the water in fuel light is still on. do i need to reset it or something?


1995 Dodge Ram 2500 4x4
1997 Dode Ram 3500 4x4. Has to be mostly slow and free because all the money went into the 2500
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post #2 of 14 (permalink) Old 09-06-2009, 03:13 PM
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the sensors on the bottom of the fuel filter can go bad. probably just need to replace it

FLEETGUARD - REPLACEMENT WATER-IN-FUEL SENSOR (89-96 DODGE)-Dodge Cummins Diesel Truck Accessories – Geno’s Garage

1996 2500 ECLB, NV4500, 4X4
Engine: Hamilton 182/214/106, P&P+O-Ringed Head, HD pushrods/retainers, 110# springs, Adj. Timing Gear at 23*, ARP 625+, 20 Over Big Bowl Pistons, 5" Turbo Back Exhaust, ATS 3 Piece Manifold, Fluidamper, Southbend DD3250
Air: Crazy Carl's Twins - S362/65/.70 over S475/83/1.10
Fuel: DAP 5x14s, AirDog, Dual Feed, AFC Live, 4K GSK

Still
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post #3 of 14 (permalink) Old 09-06-2009, 03:42 PM
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sometimes the wires coming out of the sensor get striped or they get pulled a little bit out of the sensor which allows them to touch and thus turn on your WATER IN FUEL light. you might check to make sure thats not what happened before you buy a new sensor

'97 RAM 2500 Laramie club cab 4x4, new Stock Auto Tranny, straight exhaust with 5" chrome stack, Star Wheel Turned Up, boost trans temp and pyro gauges.
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post #4 of 14 (permalink) Old 09-06-2009, 04:03 PM
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I'd try disconnecting your batteries for a couple minutes, then reconnecting and see if that gets rid of it. My Water in Fuel light came on when my Trans Temp Sensor went out, fixed it and it went away.

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post #5 of 14 (permalink) Old 09-06-2009, 04:17 PM
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How much have you drove it since draining it? When my light came on after draining it took 5 miles for it to go off.

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post #6 of 14 (permalink) Old 09-06-2009, 04:17 PM Thread Starter
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alright. thanks. i'll be back if what you guys suggest doesn't work haha

1995 Dodge Ram 2500 4x4
1997 Dode Ram 3500 4x4. Has to be mostly slow and free because all the money went into the 2500
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post #7 of 14 (permalink) Old 09-06-2009, 04:18 PM Thread Starter
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i'd say i drove a good 15 miles.

on a side note i figured out what happens when you drain most of the fuel out of the filter and cause air pockets to develope in your fuel system haha

1995 Dodge Ram 2500 4x4
1997 Dode Ram 3500 4x4. Has to be mostly slow and free because all the money went into the 2500
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post #8 of 14 (permalink) Old 09-06-2009, 05:17 PM Thread Starter
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i'm confused as to where the sensor is. I can neither FEEL nor SEE any wires that are attached to the fuel drain. can't even see any loose wires around the separator.

1995 Dodge Ram 2500 4x4
1997 Dode Ram 3500 4x4. Has to be mostly slow and free because all the money went into the 2500
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post #9 of 14 (permalink) Old 09-06-2009, 07:39 PM
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The connector is probably hanging down in the area below the filter and has water or gunk in it shorting making the light come on.

Bill
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post #10 of 14 (permalink) Old 09-06-2009, 11:04 PM Thread Starter
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well i felt all around the drain plug thing, no wires attached. no wires anywhere on the filter, even climbed under the truck, and looked up, and saw no wires attached to it anywhere.

1995 Dodge Ram 2500 4x4
1997 Dode Ram 3500 4x4. Has to be mostly slow and free because all the money went into the 2500
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post #11 of 14 (permalink) Old 09-07-2009, 03:53 PM
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If you can't find a loose connector in the filter area someone must have got frustrated trying to disconnect the sensor connector and just cut the wires.
I'd look for two wire stubs and make sure they aren't shorted together.

Bill
'95 2500 4wd auto
'95 3500 5 speed heavy hauler
Stock for one day
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post #12 of 14 (permalink) Old 09-08-2009, 02:23 AM
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find the connector and unplug it then your WIF light will go off forever
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