5 replies to this topic

[Island Mini]

My fuel gauge doesn't appear to be working. I have the spi electric pump. It was working but now just reads nothing. I put a volt meter to the side of the tank (where the little spade connectors attach and they are reading about 5v. I also looked behind the dash and its all good. Any ideas. I've checked all the fuses I can find but I don't know if there is one specifically for it I can only see the fuel pump one.

Any suggestions greatly appreciated.

Cheers Toby

[Badboytunes]

Does your fuel gauge work? Take the lead off the fuel tank and earth it. If the gauge goes to the top then I suspect a sender unit issue.

[dklawson]

As Badboy said, the quick test is to earth the sending unit wire.

 

Turn the ignition switch to the run position.  Disconnect the green/black wire from the sending unit and hold it to earth (hold it to either a bare metal spot or to the sending unit terminal with the black wire).  With the green/black wire earthed and the ignition on the gauge should go to full.  The gauge going to full with the green/black wire earthed suggests a problem with the sending unit. 

 

Sending unit replair is by replacement.

[Island Mini]

Yep sorry forgot to mention the fuel gauge works when it is shorted. I put a ohmeter on it this morning. Reading about 500 ohms intermently with a just less than half full tank. So I suppose next stage is removal. It will take me about 3 weeks to get a replacement sender in so I'm hoping I may be able to get something out of it so I can at least use the car for now.

How do you remove this thing, do you pry it out?

Thanks
Toby

[Island Mini]

Well there's your problem. Yayy I get to use my new soldering iron

[cal844]

Personally id just replace the unit, you can repair this unit to do you in the short term