Isn't that just so annoying when you get on the bottom half of your tank and the needle keeps jumping around? How about when the fluid level takes forever to change or moves instantly in turns, while some of these are more annoying than other problems but the root problem is all the same, the fuel level sending unit. You will find how to clean or replace that pesky unit here. The only things to really point out about the task is that if the tank isn't near empty it will probably be a bit messy to take it out as the fuel slowly enters and leaves the unit, also a 42mm socket is needed to make the task incredibly simple. I made due with some huge channel locks I have, but I also had the trunk divider out at the same time.



This DIY can be found in the DIY Wiki HERE.

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Jeff M.
Mercedes W123 DIY pages are now located here.
1983 / 1984 300D Sold
2000 CLK430 Cabriolet ~58k Sold
2005 Avalanche 4x4 ~66k