I filled up recently and my gauge didn't show full after filling,
having done 52 miles it's now showing half full and my Mk2 low fuel light is coming on briefly when going round left hand bends.
That's too annoying to live with.
So I've fitted my Mk3 prototype with a 470uF delay capacitor and will see how that goes.
I'm thinking either something's upsetting the gauge reading or my Golf fuel gauge is not reading the same as my original T25 one.
Golf Mk1 sender is quoted on the net as being 39 ohms full and 287 ohms empty which ties in close enough with your posted T25 resistances.
And the light came on fully at just touching reserve (same as it did with my T25 one.)
so the volts are right for the gauge but it's reading low.
Note to self, must check sender earth.
CJH wrote:
34 Ohms = Post-85 Full
37 Ohms = Pre-85 Full
168 Ohms = Post-85 Start of Reserve
288 Ohms = Pre-85 End of Reserve
E D I T- just been to the co-op for my lunch,
Mk3 fitted, LED still coming on very briefly on left hand junctions so 1000uF capacitor fitted, that should give a 10 second trigger delay.
we might need more yet for fast left hand bends.
'86 1.9 DG, 4 spd, tintop, camper conversion.
Split case club member.