25-12-2013, 09:05 AM
Sounds to me like the float arm is sticking when you start to run low on fuel. The sender/pump unit has to be fitted with two arrows lining up otherwise the float will hit part of the tank and not drop all the way down.
I suggest take it out, check it moves freely throughout its travel (there should be some resistance. It shouldn't just drop instantly. This is what stops the needle going up and down when you go round corners like my old 106 used to lol), maybe clean up the contacts and fit it back in making sure the two arrows align. Just be careful when you remove it as it will be full of fuel so you need to lift it out level then empty it into a bucket otherwise you'll have petrol everywhere. Oh and the supply hose will try and syphon its self back so block that up lol.
I suggest take it out, check it moves freely throughout its travel (there should be some resistance. It shouldn't just drop instantly. This is what stops the needle going up and down when you go round corners like my old 106 used to lol), maybe clean up the contacts and fit it back in making sure the two arrows align. Just be careful when you remove it as it will be full of fuel so you need to lift it out level then empty it into a bucket otherwise you'll have petrol everywhere. Oh and the supply hose will try and syphon its self back so block that up lol.
Team Eaton
1999 China Blue 306 GTi6 - Eaton Supercharged - 214.5bhp 181lbft
1999 China Blue 306 GTi6 - Eaton Supercharged - 214.5bhp 181lbft