MF 230 -- new fuel sending unit pegs fuel gauge to full with 1/3 tank.

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asked Aug 29, 2018 in Tractors by pwaitzman (120 points)
edited Aug 29, 2018 by pwaitzman
Fuel gauge wasn't working on my MF 230 (1978). Ohmed out the fuel sending unit and it was open. Ohmed out the gauge and it read 120 ohms. Purchased fuel sending unit p/n 1079384M91; that is the fuel sending unit listed for my tractor.   Installed new unit and fuel gauge now pegs showing tank full when tank is actually approximately 1/4  to 1/3 full. What's wrong?

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