924Board.org

[Mike924]

I think Kahl and a few others were having the same problem with their fuel gauges as I was. The needle would never settle down to a constant reading for any length of time. Sometimes reading too low other times reading too high.

Low readings are easy to explain, but how can it read too high?

I found out when I removed mine and had a play. If you remove the earth connection to the gauge the needle pegs all the way to the right, no matter what the sender's doing!

Solution: clean up the ring of 12 pins at the back of the meter unit, clean the round plastic connector sockets (not easy, but I poked a needle file around in them one at a time) and for good measure, clean the earth 'crown' connector next to the fuse/relay panel.

Result: steady reading, gradually moving down as the fuel gets used up!
_________________
1985 Porsche 924 'Lux', Kalahari Beige (my ex)
1993 Porsche 968 Coupe, Midnight Blue, 6 spd

'There is no substitute for a little grease under your fingernails.' - Chrenan, 924board.org

[Khal]

Thanks Mike924, I will try your suggestions.

Haven't played with mine yet... work, work, work... party, party, party
_________________
'80 924 Turbo

[leadfoot]

A good indication its the sender wires is having a problem with just the one gauge. If you fix it and the problem mysteriously crops up on another as it did with my gauges, look at fixing the earth connections.
Leadfoot
_________________
1981 ROW 924 Turbo -
carbon fiber GT mish mash
LS1 conversion in progress...

[Joes924Racer]

I got mine working steady by getting a good ground to the guage.
used to be erratic now its steady and on.
_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.