'76 D100 - Fuel Sending Unit Replacement
#2260243
02/27/17 01:11 AM
02/27/17 01:11 AM
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Joined: Nov 2004
Posts: 25,050 Texas
GoodysGotaCuda
OP
5.7L Hemi, 6spd
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OP
5.7L Hemi, 6spd
Joined: Nov 2004
Posts: 25,050
Texas
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My fuel gauge is eternally reading low on my Warlock and I need to get that fixed as I will be daily driving it. I've changed out the cluster voltage regulator to a solid-state 5v, I am getting 5v to the sending unit and I made a new ground for the sending unit...no improvement. 1) What is the best way to access the unit? Pull the bed wood, or drop the tank? 2) What can I do for a sending unit? It seems like these are hard to come by, is this it? ***Link*** I am not sure what size my tank should be [short wheelbase, 360, 2wd]. Thanks!
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Re: '76 D100 - Fuel Sending Unit Replacement
[Re: LilRed7879]
#2260552
02/27/17 04:00 PM
02/27/17 04:00 PM
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Joined: Nov 2004
Posts: 25,050 Texas
GoodysGotaCuda
OP
5.7L Hemi, 6spd
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OP
5.7L Hemi, 6spd
Joined: Nov 2004
Posts: 25,050
Texas
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I say drop the tank - they almost always need cleaning anyway.
And yes that unit is pretty much the only out there right now Mother Mopar has not made them in a while. Thanks, I'll start spraying down the hardware to remove the tank. The linked sending unit calls for a 18gal tank, for some reason I thought it was a 20.
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Re: '76 D100 - Fuel Sending Unit Replacement
[Re: GoodysGotaCuda]
#2260584
02/27/17 05:11 PM
02/27/17 05:11 PM
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Joined: Jan 2003
Posts: 21,083 Niles , Ohio
therocks
oh wait.but hey.lets see.oh yeah.
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oh wait.but hey.lets see.oh yeah.
Joined: Jan 2003
Posts: 21,083
Niles , Ohio
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If the float is the problem go to Ford.They had ones for Vans sday like 98 or so.I had a bunch and they were some plastic that never went bad.I pulled at least 10 when I changed senders etc on them.used some and have no idea where I put the rest.Rocky
Chrysler Firepower
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Re: '76 D100 - Fuel Sending Unit Replacement
[Re: GoodysGotaCuda]
#2260857
02/28/17 01:37 AM
02/28/17 01:37 AM
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Joined: Jan 2003
Posts: 10,634 Freeport IL USA
poorboy
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,634
Freeport IL USA
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If the gauge is always reading low, it may not be a bad sending unit, the float could be bad, or the float arm could be out of adjustment. You need to pull the sending unit either way, but I think once its out, I would check to see if moving the arm results in the gauge reading properly.
Years ago, when I dealt with this stuff often, about 50% of the time, the float or float arm adjustment was the cause of a consistent high or consistent low reading. It the reading was all over the place, or would not function at all some times, the sending unit was often the issue. Gene
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Re: '76 D100 - Fuel Sending Unit Replacement
[Re: GoodysGotaCuda]
#2261189
02/28/17 07:02 PM
02/28/17 07:02 PM
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Joined: Sep 2003
Posts: 7,833 east side of Ohio
basketcase
master
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master
Joined: Sep 2003
Posts: 7,833
east side of Ohio
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and while you have the tank off replace the front to rear brake line, and check the frame, the tank holds in a lot of crap in that area.
Dave
1981 Dodge D150 360 auto
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