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#11
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Faulty sending unit(s)?
Use the hidden OBC menu to watch your live tank levels. You can learn quite a lot from that. Eg if the filtered value isn't close to the instant value, usually something wrong with the sending unit.
There was a service bulletin that describes how to add pressure to the spring/wiper that's what inspired me to do the repair rather than replace. I've been able to reliably drive down to single digits miles to empty and also when I fill the tank it's instantly full. AWR-fix: Fuel Gauge Sender Repair (fix errant fuel gauge) https://r.tapatalk.com/shareLink?sha...7&share_type=t
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E53 / M54 2001 3.0i gas LHD (pair of them: his & her) Last edited by andrewwynn; 10-12-2019 at 03:36 PM. |
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#12
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#13
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On a side note - I knew someone who inspects gas station fuel storage tanks for a living...he will only fill up at Chevron.
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2004 X5 3.0i Born 02/04 Delivered 03/04 |
#14
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Just providing an update. I have added Techron Fuel System cleaner and filled up with Chevron 91 twice. Ran a couple more tanks after that. Everything seems normal after the 1st treatment - fingers cross.
cn90, Thanks again for the reminder on using the Techron cleaner! Oh...live level on Test6 seems normal too.
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2004 X5 3.0i Born 02/04 Delivered 03/04 |
#15
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It's a known issue that the wiper pressure can be too low. Cleaning agent can definitely fix that. Run test 21 reset then if, after you fill a tank you don't get:
1) 1/1 full gauge and 2) 60 miles of driving before gauge moves, Then be suspicious and follow up.
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E53 / M54 2001 3.0i gas LHD (pair of them: his & her) |
#16
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Thanks for all the info you've provided...very helpful in understanding all the tests and how our tanks behave ![]()
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2004 X5 3.0i Born 02/04 Delivered 03/04 |
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