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Which sending unit are you looking for? Oil Pressure? Water Temperature? Fuel Level?Which sending unit are you looking for? Oil Pressure? Water Temperature? Fuel Level?
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TROUBLESHOOTINGPROBLEM: The fuel gauge does not work at all...no needle movement.
With the ignition switch on, remove the wire from the fuel tank sending unit and ground it to the unit housing. This removes the resistance supplied by the sending unit, and should cause the gauge to swing over to the 'Full' position. Does this happen?
Yes No
The gauge and wiring are good. The problem is most likely with the sending unit. The sending unit must be removed for further testing. (1)
Ground the sending unit wiring to a good chassis ground (instead of the sending unit housing) and watch the gauge. Does it now peg out to the 'Full' side?
Yes No
The problem is with the sending unit ground. Either the unit itself is bad or the float/arm is binding/missing. The sending unit must be removed for further testing.
The power supply to the gauge has been interrupted, (check fuses), the gauge is defective, or the wire from the gauge to the sending unit is open or has a break in it.
Testing the Sending Unit
After the sending unit has been removed from the tank, check to make sure the float is present, intact and still floats and that there is no binding with the float arm. Reconnect the gauge wiring to the unit and ground the unit. Move the float arm up and down. If the gauge reads full in the full up position and empty in the full down position, then the sending unit is good. Verify by hooking up an ohmmeter to it and making sure it reads 8-12 ohms full and 70-73 ohms empty. If not, the sending unit needs repaired or replaced. You can easily disassemble the head of the sending unit to clean and/or repair.
Was this the original problem with the gauge? If so you have problem with a wire shorting to ground from your sending unit to the gauge. If the problem arose as a result of the sending unit replacement, the new sending unit is defective.
One of two things: either the gage itself is malfuntioning or the float/sending unit in the gas tank is failing. Disconnect the plug at the tank for the sending unit, pick up a new sending unit and attach it to the plug without taking the old unit out of the tank. Then operate the float up and down on the new sending unit. If the gas gage reads correctly when the float is all the way up (full) and all the way down (empty) the old sending unit is probably bad and should be replaced. If there is no difference when you connect the new sending unit, the gage is probably bad. Then you can return the new sending unit (as long as the auto parts store allows returns of electrical parts) and buy a new gage. Install the new gage and...happy motoring.
first need to buy oil pressure sending unit 3/8 deep socket remove oil pressure sending unit you need teflon tap sealer for oil sending unit threads.okay to replace oil pressure sending unit.you need safe raise support vechicle locate oil pressure sending unit next to the oil filter.disconnect oil pressure sending unit wire connector then use oil pressure sending unit 3/8 socket remove the sending unit.then take new oil pressure sending unit use teflon tape white plumbers tape or use thread sealer apply to the oil pressure sending unit threads then install new oil pressure sending unit and reconnect electrical connector to sending unit.then crank engine check for oil leak if all is good lower vechicle back to ground wait several minutes check engine oil level.you good to roll.
What is the fuel gauge doing? The sender is easily ID as the problem by symptom analysis. Needle stays in one place or reads incorrectly, sending unit, needle jumps around while driving sending unit.
IF OIL SENDING UNIT LEAKING OIL NEED REPLACING.WHEN INSTALLING NEW OIL SENDING UNIT.YOU CAN USE TEFLON PLUMBERS TAPE ON OIL SENDING UNIT THREADS BESURE WHEN INSTALLING NEW OIL SENDING UNIT.PUT TEFLON TAPE JUST A LITTLE ABOVE THE BOTTOM THREADS. SO YOUR OIL SENDING UNIT THREADS GET A GOOD GROUND FROM ENGINE BLOCK.SO IT WILL WORK CORRECTLY.
Look up overhead above the sending unit for any oil that maybe dripping from above,makeing you think it's the sending unit leaking. If not then you may use a little thread sealer to seal the leak. Also check to see if the sending unit is loose and the threads may not be the same as the old unit you removed (metric/standard/pipe) Hope this will help you.
1. Relieve the fuel pressure and disconnect the negative battery cable.
2. If not already removed, depress the clips on each end of the rear seat cushion and remove the cushion.
3. If not already done, detach the electrical connector from the fuel pump/sending unit.
4. Remove the attaching screws from the fuel pump/sending unit access cover and remove the cover.
5. Disconnect the fuel supply and return hoses from the fuel pump/sending unit.
6. Remove the attaching screws and the fuel pump/sending unit from the fuel tank.
7. Detach the sending unit electrical connector, remove the sending unit attaching nuts and remove the sending unit from the fuel pump assembly.
To install:
1. Attach the sending unit to the fuel pump assembly and install the nuts. attach the sending unit electrical connector.
2. Install the fuel pump/sending unit into the fuel tank with a new gasket and install the mounting screws.
3. Connect the fuel supply and return lines.
4. Install the access cover and the mounting screws.
5. Attach the sending unit electrical connector.
6. Position the rear seat cushion over the floor, making sure to align the retaining pins with the clips. Push down firmly until the two retaining pins are locked into the rear seat retaining clips.
7. Connect the negative battery cable, start the engine and check for proper system operation and for fuel leaks.
Which sending unit are you looking for? Oil Pressure? Water Temperature? Fuel Level?
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