The Fuel Gage on my '98 A4 V6 has started to work only intermittantly. Any one else have a similar problem. Is the problem likely to be the "sender" in the tank? or possibly a wiring problem? It works briefly on and off when the car is started and then only works very infrequently. Thanks
Ted and David, Although it may be a shot in the dark, I once had a conversation about wiring with a tech who works at a nameless VW dealer - he said that there were a number of Passats (?) that were brought in with problems with the fuel gauge - when the top of the sender was accessed, there was COOLANT on the top of the sender! Turns out, a leak in the coolant level sensor, combined with well-sealed connectors, provided a rubber-encased conduit for the pressurized coolant escaping the reservoir - right through the dash and a number of harnesses. As you can imagine, the whole harness has to be replaced (done under warranty in the case of the VW's). You can check the output of the tank sender using a multimeter - resistance value should correspond with a tank level (in the Bentley) - if it is a flaky sender then you might see the resistance drop off if the car is rocked. Although I am unfamiliar with the inside of an A4 tank, with a
5ktq, it is important to make sure that the sender float arm goes back in exactly as it came out, otherwise it will hang up on the wires and fuel line coming from the in-tank fuel pump. Cheers! Steve Sears
1987 Audi 5kTQ - after numerous attempts, the gas gauge still stops at 1/4 tank......argh.
1980 Audi 5k
1962 and '64 Auto Union DKW Junior deLuxes (SPAM Blocker NOTE: Remove SHOES to reply)
There's a release tab you'll have to depress to get the sender out. You pretty much have to do it by feel since you can't see anything once you stick your hand/arm into the tank. It might pay to pick up a manual or try to find a picture of the setup before attempting replacement. You might check on AudiWorld
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for help with this.
Oh, and more thing ... do this on a nearly empty tank unless you enjoy soaking your arm in gasoline.
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