We just bought the omni from a older couple. His grandson replaced the fuel pump and now the fuel gauge doesn't work. He says that the gauge worked before the pump replacement. I'm thinking that the grandson did something to the sending unit while he was changing out the fuel pump. My question is what can I do to troubleshoot it to make sure its the sending unit and not something else wrong with the fuel gauge system. I don't want to go and buy a sending unit and that not be the problem
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Thanks YellowFury, it might be, will check the fuel pressure and since the fuel pump may not have ever been replaced, may need a new one. Checking the computer tonight, finally bought the truck and had it brought it home on a trailer, didn't want to risk it breaking down. Sometimes computers will cause the vehicle to stop, however, computers don't usually allow the vehicle to start up again. Didn't find any vacuum leaks and it doesn't overheat at all, will keep checking. Thanks again for your suggestion.
You just have a ground problem between the frame and tank ground. It has to be connected to a clean tab on the tank at the fuel sending unit. Check and clean them, both tanks. It gets confused and don't know what to do without a complete circuit.
on the older jeeps the gauge cluster with the fuel gauge, clock and temp cauge is controled ny a riboin cable on the back. when i got mine theis didnt work either, the cable was dirty. its real easy to take them out all you will need is a phillips screw driver and a q tip and some rubbing alchole. clean it up and see if that does it.
If the car has current in the plugs and gas coming to the cylinders then it damn well start. Is the car being cranked? if yes, the battery is fine. Check the current in the plugs. The spark should be blue. The fuel pump working?
Check to see that you have good(bright orange) spark to the spark plugs the next time it dies... if not odds are its the coil. If spark is good check fuel pressure, since the pump was replaced if pressure is bad the fuel pressure regulator would be in question.