Dodgy Fuel Gauge

[Matt B]

Yet another post by me, sorry. The NP has got to the point where things are starting to fail and it's not worth paying someone to fix it all.

The fuel gauge on the Paj has not been working for a while. Sometimes not registering, and other times giving a reading about 1/4 over what I would expect, with an apparent mind of its own.

I've already pulled out the PCB and resoldered the guilty R10 resistor - as well as the other R10 for good measure - and although that fixed the temperature gauge, the fuel gauge is still all over the place.

I've pulled the sender unit and tested it with a multimeter over a range of levels and it all seems to be okay.

Is there anything else I could look at to fix it, besides replacing the PCB?

Thanks

[MOPaj]

No solution, but same problem. Hopefully someone has a suggestion!

[Nxnmmnmk]

Try pulling the sender unit apart and cleaning the contact surfaces, and bend the contact arm a little so it makes better contact with the variable contacts. It might be that it tests ok on the bench but not so good in place.

[Matt B]

Try pulling the sender unit apart and cleaning the contact surfaces, and bend the contact arm a little so it makes better contact with the variable contacts. It might be that it tests ok on the bench but not so good in place.

Thanks, I'm thinking that's what I'll have to do. I'll also identify what pin connects it to the dash and see if the signal is getting through.

[Moci]

I have now similar problem.

When I start car, fuel gauge not working for 5-15 minutes. After I drive car for a while, fuel gauge start working.
This is happening every time when I turn off and start car.

Car is now at mechanic and we will see what could be problem.