I wasted money on a repro sending unit that I couldn't calibrate with my fuel gauge on the bench. I found a NOS unit at Carlisle last year that was spot on. I suggest you try to find a NOS unit or send yours out for rebuilding. Send it out where?
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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