- 139
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- Location
- Los Angeles, CA
Did you figure out the wiring for the WIF sensor?
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My CUCV spin on fuel filter mod
- Thread starter Pawnshop
- Start date
- 139
- 31
- 28
- Location
- Los Angeles, CA
Keep me away from the matches!!!!
I've had 2 different filter heads like this in the truck over the past few months. I can't get them to not leak...and I'm being nice with the term leak. They are pounding out diesel. Way worse than the stock one I removed. I even tried a rebuild kit on one but it only progressively got worse.
I'm need to find another alternative. I was hoping to keep a fuel heater but I might get something that wraps around the filter itself and is separate.
Whitfield
Member
- 116
- 3
- 18
- Location
- Richmond Virginia
Where did you source these from? If they are defective from the manufacturer is there no resolution? Mine is still going strong but I have heard of a few duramax guys finding a bad batch of filter heads. I tried to source a GM part to avoid this issue - but with most everything made in the far east now sometimes even OE can be a roll if the dice.
- 139
- 31
- 28
- Location
- Los Angeles, CA
A mix of sources. I bought one from ebay and another off Amazon. I bought the rebuild kit off Amazon. It was ok after the rebuild but now it is so bad I won't start it. I'm surprised it has enough fuel pressure to run.
I might try the Napa style next. I'd like a Racor but I'm not having good luck finding those. I would like a fuel heater but I don't need a water in fuel sensor.
- 353
- 527
- 93
- Location
- Roanoke/Alabama
Doing this conversion with the Napa 4770 base this weekend. Thanks to the OP and everyone else who has contributed to this thread. I'm fitting out my M1009 for trail riding and the spin ons are a much easier filter to find locally if something goes wrong in the woods.
- 139
- 31
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- Location
- Los Angeles, CA
UPDATE - I went with a Racor 445R with fuel heater. It cost more than the Duramax filter set up (but not by much when I ordered 2 sets of filters and bases) but it has been in the truck for a few months.
I think the Duramax filters might have worked for me if I re-routed fuel filter before the lift pump but I didn't want to mess with that. I didn't order the WIF light but I have a clear bowl to see the fuel. Also I've never had a WIF light come on in over 25 yrs of owning and driving diesel trucks.
- 1,845
- 49
- 48
- Location
- Berkeley CA
I suspect that the WIF stuff was put in there because the military has this tendency to cross rivers without using a bridge....
Tyler benkowski
New member
- 4
- 5
- 3
- Location
- Brooklyn CT
great writup with pics and information. I too am going to be doing the Duramax spin on conversation. I ordered some diy weather pack connectors.for the fuel heaters, Would you be able to tell me what color wires on the filter coincide with the original wires from the box style filter setup? Thankyou!
Rennat_2006
New member
- 20
- 16
- 3
- Location
- Idaho
Just did the dmax filter conversion myself and was hoping someone had updated this thread with the electrical hookups. Whitfield and others have you guys got these hooked up? Im gonna go look in the manuals for wiring diagrams
- 139
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- Location
- Los Angeles, CA
I just clipped the and spliced the wires from the original filter to the new one. That way the truck side was the same.
vanaisa
Well-known member
- 199
- 277
- 63
- Location
- Tallinn, Estonia
Look here - post nr.5
6.2 fuel filter assembly how does it work?
I have a thirst to know how everything works but dont want to take mine apart until I have to. Cant find much info on it in the manuals, I know the top 2 wires are fuel heater. The schematics show a vaccum switch and water in fuel solenoid but doesnt show how it all works together. What makes...
www.steelsoldiers.com
BenderIsGreat
New member
- 4
- 1
- 3
- Location
- USA
It's good to see people still working on this mod!
The truck has 3 wires to the original water in fuel sensor. The duramax filter bottom has 2 wires. I haven't found the actual harness wiring for the WIF in the TM's yet... Trying to keep the WIF light working if I can.
Or at least know which of the two wires I need to connect to. Maybe the factory wiring has +V, GND, sensor return?
The truck has 3 wires to the original water in fuel sensor. The duramax filter bottom has 2 wires. I haven't found the actual harness wiring for the WIF in the TM's yet... Trying to keep the WIF light working if I can.
Or at least know which of the two wires I need to connect to. Maybe the factory wiring has +V, GND, sensor return?