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E36 - fuel gauge problem
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<blockquote data-quote="Fireblade" data-source="post: 345502" data-attributes="member: 221"><p>Guess what..... yesterday my fuel gauge went dead and the reserve light came on. At first i suspected that I might have a leaking tank but the floor was clean. So next I suspected it could be one of the float sensors. First checked the left one and it was showing 150 ohms (had slightly more than 3/4 petrol in tank) - seems OK. Then checked the right one - open circiut (no reading). Damn, I just changed this fuel pump (c/w float sensor) a few months ago. My mech opened it up and found one sensor wire detached (broke off from terminal). Seems that the manufacturer over crimped the pin and caused the wire to be partially broken - finally broke away this time. Could not solder the wire to the pin as solder does not stick to the pin. So took a metal tube connector, soldered the wire to this and inserted the tube into the pin. Viola - got connection and tested resistance. At full height (i.e. full tank condition) the resistance was 250 ohms- as per specs. Cant imagine having to spend another RM400 on a new unit if I did not discover this simple fault.</p></blockquote><p></p>
[QUOTE="Fireblade, post: 345502, member: 221"] Guess what..... yesterday my fuel gauge went dead and the reserve light came on. At first i suspected that I might have a leaking tank but the floor was clean. So next I suspected it could be one of the float sensors. First checked the left one and it was showing 150 ohms (had slightly more than 3/4 petrol in tank) - seems OK. Then checked the right one - open circiut (no reading). Damn, I just changed this fuel pump (c/w float sensor) a few months ago. My mech opened it up and found one sensor wire detached (broke off from terminal). Seems that the manufacturer over crimped the pin and caused the wire to be partially broken - finally broke away this time. Could not solder the wire to the pin as solder does not stick to the pin. So took a metal tube connector, soldered the wire to this and inserted the tube into the pin. Viola - got connection and tested resistance. At full height (i.e. full tank condition) the resistance was 250 ohms- as per specs. Cant imagine having to spend another RM400 on a new unit if I did not discover this simple fault. [/QUOTE]
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