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1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

troubleshootin fuel cell

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Old Aug 13, 2006 | 01:39 AM
  #1  
hurricane72's Avatar
hurricane72
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troubleshootin fuel cell

I just put a fuel cell in my '72 and now the gas gauge isnt working. I re-did the connections with the wiring and put a test light to it and when the key is on accessory the light blinks and when the truck's running the light flickers real fast and spastic..anybody know whats goin on? I got some of the rust off of the screw and washers that the power wire runs to but nothing changes..i know its got enough gas to register, too.
 
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Old Aug 13, 2006 | 07:28 AM
  #2  
Dave Severson's Avatar
Dave Severson
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From: Madison, SD
Maybe either a bad ground or a faulty sender... Also, is it an adjustable sender?
 
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Old Aug 14, 2006 | 08:14 AM
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Pro-Street/StateTK's Avatar
Pro-Street/StateTK
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From: East Flat Rock NC
Did your fuel cell come with a gm sending unit or did you order it with a ford
sending unit, is the cell used and maybe already had the wrong sending unit, even
a new fuel cell could get shipped with the wrong sending unit? Maybe some
history on the fuel cell would be helpful?





Wally Wo


P.S. one more ? did you adapt your old sending unit ? Also like dave said check your grounds.
 

Last edited by Pro-Street/StateTK; Aug 14, 2006 at 08:18 AM.
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Old Aug 14, 2006 | 10:24 AM
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I don't think the fuel cell's sending unit will work with the stock gas gauge - it didn't in my '68. Get out an ohm meter and see what the gauge puts out for resistance when empty and when full.
 
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Old Aug 14, 2006 | 09:01 PM
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hurricane72
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i finally got it to work...we had to take the sending unit out of the stock gas tank and put it in the cell but it works...the float wire was corroded to the switch under the cap.
 
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