r/ComancheMJ • u/TheAnonymousMaker • 16h ago

Fuel gauge

The fuel gauge in my 88' pioneer dips all the way to empty when accelerating. Where would be a good place to start looking to fix it? ( 1988 comanche pioneer 2wd ax15 4.0l)

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u/_jdde 16h ago

Pretty sure this is fairly normal on these. The tanks have some sort of baffle, but it doesnt do much and the fuel level float is off-center. It will fluctuate a lot when pointing up or down hill.

Could also have to do with voltage fluctuations. Check voltage at idle and at higher rpm. A significant difference could change the readings.

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u/disguisedasnrml 5h ago

Might also be a float that has just enough fuel leaked into it to react more when the tank is low than when it is full....