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Questions and Answers

Ford Ranger Fuel Gauge Not Working

Q. Hi Vince! Love your site. Help! Just bought a 1990 Ford Ranger XLT 2WD. Gas gauge shows ¼ tank when off. Turn the key on, it goes to empty. Sending unit??? Is it easier to pull the tank or pull the bed to work on? How do you do that? Also, rainwater pouring in from both top corners of the windshield onto the floors, soaked. Any help you could give me would be great!

Bill from NY

Ford Ranger Fuel Gauge Not Working

A. The fuel gauge and fuel sending unit are very easy to test and in about 15 minutes you will know exactly what's wrong.

First thing you need to do is check all the fuses and make sure you are getting power to the gauge. If the other gauges are working, then you can safely assume power is coming into the cluster (red/yellow wire).Then check the black/yellow wire at the fuel tank connector and make sure you have a good ground.

If power and ground are good, then ground the yellow/white wire at the fuel tank connector. If the fuel gauge goes all the way to FULL, you have a bad sending unit. If it stays at Empty, you have a bad gauge or an open in the yellow/white wire.

Ford has a special tester for the Anti-Slosh module. But if you replace the fuel level sending unit and fuel gauge, and assuming the wiring is indeed good, then it's a pretty good bet the Anti-Slosh module is bad.

Ford Ranger Fuel Gauge Not Working

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