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Car Forum / MINI / July 2003Fuel guage / sending unit?
Hello from the colonies Thanks to the group and specially Oli for the help with the vac situation. All is well now with that bit. New question: Fuel tank full, gauge reads full. Tank bone dry gauge reads full(happened once, 50 meters form gas station! Whew lucky!).Always keep a dipping stick with me now! Any tips on which end to start checking first would be greatly appreciated. I am not adverse to tearing into it, just wondering about others experiences in this area. Thanks again Les > Hello from the colonies > [quoted text clipped - 10 lines] > > Les Firstly get an instrument that will put a resistance across the wires to the gauge and check that the gauge is reading correctly.. with this you pull the wires off at the tank unit and connect there. ... There are set values which apply to the settings empty mid and full -- don't know off hand which these are. But finding out and buying some 5c resisters of the values from an electronics shop will do. If your gauge is accurate then have a look at the tank unit by placing a ohm (multi metre ) across the gauge when removed from the tank checking the resistance to the values of the given values of the gauge. My guess is that its a broken wire/stuck (stuffed) tank unit. rm I had this problem with the pickup two years ago. The sender unit had rusted in one position. The ball cock couldn't go up or down :( The Muffin Man > Hello from the colonies > [quoted text clipped - 10 lines] > > Les > Hello from the colonies Hello from around the corner in sunny Melbourne. > Fuel tank full, gauge reads full. Tank bone dry gauge reads > full(happened once, 50 meters form gas station! Whew lucky!).Always > keep a dipping stick with me now! Did this start suddenly, and the guage has been stuck on full ever since, or does it just *sometimes* stick on full? > Any tips on which end to start checking first would be greatly > appreciated. If the problem is intermittent, then it might be a corroded or sticky send unit, but my money says that either the wire has fallen off the sender unit (inside the boot) or the guage (behind the instruments, unlikely on a Clubman) or the instrument voltage regulator has died, particularly if the problem started suddenly and stayed. > I am not adverse to tearing into it, just wondering about others > experiences in this area. Look for loose wires first. graham not picking but if the voltage reg was stuffed the temp gauge would read wrong makka sunny melbourne ....... pffffffffffffft cold arrid place it is ;) > > Hello from the colonies > [quoted text clipped - 20 lines] > > Look for loose wires first. Reading FULL all the time would suggest a short somewhere. Normally, when you connect the wires together at the sender you'll get a full reading. What happens when you disconnect a wire(s) at the sender? If the reading goes down to EMPTY, then there is a short in the sender (or as others have indicated it is sticky). "Impala" < > Hello from the colonies > [quoted text clipped - 10 lines] > > Les > Reading FULL all the time would suggest a short somewhere. Normally, > when you connect the wires together at the sender you'll get a full > reading. That depends on the guage and sender design. Some show full with a high resistance to earth, some show full with a low resistance to earth. Minis have had both types over the years. Thanks to the group for the information. It's nice to know one can always count on this group for help and information!Will be putting that help to work this week. Les > Hello from the colonies > [quoted text clipped - 10 lines] > > Les |
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