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My temperature & fuel gauge doesn't work how to troubleshoot

To troubleshoot, I need year--make--model, vehicle sold in the US.
I'd check the coolant temp sensor and wiring circuits. The same thing for fuel gage sending unit. Sometimes for the fuel gage sending unit, I get a couple of resistors one represents empty, the other represents full. If the gage reacts properly then the problem should be the sending unit in the gas tank.

Jan 26, 2018 | Cars & Trucks

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Fuel gage not working

Check the work. The fuel level wiring might not have gotten plugged in. Also, if the fuel pump was a pain to get out for whatever reason, the wiring on the inside might have gotten broken off or the arm that holds the float got bent. Lastly, it doesn't happen a lot anymore but sometimes the float just sinks and stays there. The newer floats are made of foam so they tend to last.

Jan 26, 2017 | Cars & Trucks

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My fuel gage works sometimes and sometimes its all over the place and now my tempature gage is doing the same

I am no expert, But:

The sending units could be dirty, both wires could be touching where insulation has failed if both are in same wiring harness, or both sending units have went bad.

Mar 24, 2015 | 2005 Buick LeSabre

1 Answer

When I go to crank 2000 jeep Cherokee limited the fuel gage works sometimes and it will only run for about three seconds what's wrong?

The computer grounds the fuel pump relay for 3 seconds to boost fuel pressure on start-up. If the computer does not see oil pressure or RPM it will not continue to ground the relay.
You would need to bypass the relay and see if the pump continues to run, then check the relay and the ground signal from the computer.
The gas gauge problem may be connected or something different.
The connector at the gas tank may be faulty which would affect both the power for the pump and the fuel gauge sending unit.

Sep 21, 2012 | 2000 Jeep Cherokee

1 Answer

What will cause your speed odometer gages go nuts and your brake lights to stop working?

sounds Like You HAve Ground Problem Clean the CABLE Goin to Your Battery And then Look On YouTube to See How They Do It Ok

Jun 23, 2012 | 2003 Ford Windstar

1 Answer

Fuel gage fuse

The fuel gage shares the same fuse as all the gages, so if the fuel gage is inop and all other gages are working then you have another problem. The most common cause is that the sending unit for the fuel gage inside the fuel tank is defective, that is true 99% of the time in my 35 years of repair work.

Jan 20, 2012 | Ford F-250 Cars & Trucks

1 Answer

Fuel gage is not working properly sometimes it read low fuel and sometimes full

Probably fuel pump about to go out. This happened to me and about 2 mo.s later, fuel pump had to be replaced. Bad thing is, it is in the the fuel tank.

Jun 30, 2010 | 2000 GMC Safari

1 Answer

Fuel level gauge

some of this vehicles have a computer system, that will allow you to diagnose the fuel gage with an aftermarket sacan tool,
than most of auto repairs have, but i will recomend you to check also the conector by the fuel pump and make sure there is not any corosion or melting circuit inside the conector,

what the scan tool does is triger your gage and that way you will know if you have a bad gage.

May 17, 2008 | 2002 Ford Windstar Cargo

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