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Old 06-28-2018, 11:35 AM
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It's funny - I have this exact same problem. Have for years. Fill up and gauge is stuck at 3/4. Probably about 6 years ago I just assumed it was the sender and replaced it. Same problem. An ohm meter on the old gauge and the new shows it reading correctly if you move the float up and down.

I'll admit I've been too distracted with other things to think about it much, but there are a couple possibilities:

1. The gauge itself it hosed.
2. The wiring is messed up. More likely a problem on my car with it's 1950s style wiring loom than yours, Richard.
3. For some reason the float gets "stuck" in the car. Doesn't really make sense given that it happens multiple senders.

I'll break out the ohm meter this evening and see if I can make any discoveries.
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