Question about 2002 Audi A4
Sometimes the gauge doesn't work at all, at other times the reading is false (shows full when half empty).
That link shows you how to replace the sender. However, 99% of the time the sender can be fixed easily. When you have it out, you'll see that there's a wire that is broken (plainly visible). Use a barrel crimp connector to fix it, or use two of them to install a jumper wire between the two broken ends, and then reinstall it. You don't have to route the wire under the boom of the sender float arm - I'm not sure why Audi did that but it doesn't have to be done. Just make sure that wherever you position the wire, it doesn't interfere with anything on the sender. This is a fix about 99% of the time - this failure is common on the A4 and this is almost always the fix.
Posted on Feb 10, 2009
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Posted on Jan 02, 2017
SOURCE: Gas gauge reading is erratic.
Your sending unit is getting flaky - it's a known issue. You can repair it though, rather than buy a new sender.
Do not do this job with any more than a 1/4 tank of gas or you'll get a fuel bath in the trunk.
Here's a DIY procedure on how to do it - 99% of the time on these cars, when there's a gas gauge issue, it's the broken wire they show in the procedure. I was out of solder at the time I fixed mine, so I used barrel clamp connectors to crimp a jumper wire into place on the broken ends of the wire, and that fixed it permanently.
Here's the link:)
Instead of replacing the sender, fix the visibly broken wire and it'll fix the failure.
Posted on Feb 10, 2009
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