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Why does your 1999 jeep wrangler Sahara fuel gauge show empty and low fuel light come on when it has a full tank?
Wiki User
∙ 11y ago
Most likely a bad sending unit, but first perform this test to see whether it is the gauge.
Turn you r key from off to run 3 times stopping on run ( not start ) while holding the odometer reset button in.
This will put the dash module in test mode, all of the gauges will go into a test run, going from one extreme to another, if your fuel gauge fails to do this then that is probably the problem.
( during this time trouble codes will also be displayed, you can either count the flashes from the odometer or copy down the numbers as they come up )
If all this is ok then trace the electrical connections all the way to the tank to be sure none are grounding, last is to drop the tank and replace that sending unit.
Wiki User
∙ 11y ago
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