We put 3/4 tank fuel into jeep. Driving, the tank went from 3/4 to empty in 5 miles. Fuel is still in the tank. What might the problem be.
Sending unit which now comes with a fuel pump
SOURCE: fuel gauge
you either have a bad sending unit, which iit is in the fuel pump assembly in the tank or a hole in the float and it fills with gas and sinks, which it's also on the fuel pump assembly in the tank or a bad fuel gauge in the instrument cluster. it's more than likely a sending unit problem, jeeps are bad about the sending unit to quit working
SOURCE: 96 grand cherokee fuel gauge shows empty but scanner shows 49%
sounds like a bad sending unit in the gas tank. While there you may as well replace the fuel pump too.
SOURCE: 1993 Jeep Grand Cherokee gas gauge reads empty but tank is full.
Fuel level sending units are known to go bad on these.
SOURCE: 1993 Jeep Grand Cherokee Fuel Gauge not working
There could be two problems here:
1. That buoy floating tank is not working properly
2. That the electrical system that fails to submit the dashboard.
Review this information:
- ZJ-Secc-8E-Instrument-Cluster-and-Gauges
Page 2 - Fuel Gauges description
Page 4 - Voltimeter/Tachometer/Fuel Gauge/Low Fuel Inoperative
Page 10 - Specifications
- ZJ-Secc-14-Fuel-System
About Fuel Tank components
- ZJ-Secc-8W-Wiring-Diagrams
Fuel Tank and Gauge & Sensor Units Sending (Page 93 and next)
Good luck... and remember rated this help.
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