3 replies to this topic

[sambarnes]

Anybody know what i need to do to get a fuel sender unit out and put a new one in.

All i know is theres a screw somewhere, and it needs to be near on empty?

[dklawson]

I assume your car is "newer" than 1964. Is that correct?

Drive until the tank is well below 1/2 full. (Use a flashlight through the filler neck to look inside to be sure).
In the boot you'll find two wires on the sending unit. The black one will go directly to the metal flange of the sending unit.
The green/black wire will go to the insulated spade terminal on the sending unit.

After removing the wires from the sending unit, look at the locking ring that holds the sender in place.
Use a flat bladed screwdriver and small hammer to drive the locking bayonet ring around counterclockwise. (The ring has some ears you place the screwdriver against).
Tap each ear as best you can, driving the ring counterclockwise until you can remove it.
With the bayonet ring removed, pull the sending unit out and also remove the old gasket.

Reverse these steps when putting the sending unit back in.
When possible, use a new rubber sealing gasket.
You can use sealant on the seal if you want but it must be fuel compatible and non-hardening (absolutely no silicone rubber sealant!)
Don't forget to hook the wires up when you're done.

Opening another discussion, I assume you have a reason you want to remove the sender. Sometimes fuel gauge problems are not with the sending unit but the voltage stabilizer. It's best to test the system before buying expensive components.

[sambarnes]

Thanks.

Is there a certain position it need to be in when its in to read the right levels.

Yeah i know that it is the fuel sender unit as the guage works if you earth it out with the wires on the sender itself.

I have also got the parts ready, just need to fit them, and yeah i do have another rubber gasket.

thanks for the help.

sam

[dklawson]

Hi Sam,

The back side of the sending unit (the side in the tank) has some keying features that make it pretty hard to put the unit in any way but the correct way. You'll see what I mean when you remove the old sender and go to put the new one in.