Quote:
Originally Posted by Zoni
Mr Bill, thanks for your reply. WHy would it only happen when the fuel level is low if the sending unit is the culprit?
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The fuel gauge works on the principle of a rheostat except the wires ( 2 wires ) are straight inside the unit. The float varies the resistance and it is read by the gauge. You have a weak/dirty spot on the wire whereas the contact with the float is not made, hence bounce or show 0. This is a very common mode of failure. I do not know how to remove the sender on a w124. Do a search here and there is a wealth of info on how to replace, refurbish, repair etc.