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Date: Mon, 18 Aug 2003 22:02:03 +0200
From: "Huibuh" <no.spamnopsamline.de>
Subject: Re: fuel gauge inaccuracy / 9-3 diesel


> Making the assumption that the system is a simple float producing an > analog voltage which then goes to electronics to run the gauge (or has > a regulated supply to the float and thence to the gauge). Basically does the system work like that. > 1) this is possible, but I don't know where it comes from... Can be > measured easily. The problem is that I have no specific resistance and voltage values due to the lack of a schematic. > A) the gauge can be turned on and off in night mode... possible that > there's a hangup there. Don't know what they replaced when the SID > was changed out. I have to find out about that and will check the dealer. > C) possibly the wiring and connectors.. those can go to a higher > resistance, and can really mess things up... Note that you should > check the connections anywhere the system ties in to the fuel sensor, > gauge, and computer.... Checked that one today. Nothing wrong with the connections. (probably DICE, if I guess right.... Did they > change that? something to think of...., or clean the connections...) If DICE means the shape of the plugs: Affirmative. They did not change them. > Hope that this is of some help. Thanks so far. The dealer tried today to adjust the gauge electronically - again. He wouldnĄt believe me about the specifics. He wants to exchange the fuel level sensor unit again. He is guessing that it is stuck inside the tank (possible but seems unlikely to me). He even thinks about replacing the fuel tank. If nothing helps he is going to measure the electric system (in his opinion one day of labour). But what I cannot understand is why any adjustment / repair what so ever comes back to the same indication: reserve lamp = 4 ltr; shift of gauge indication over the full range (should mean wrong voltage, should it?). Dieter

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