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X5 E53 (1999 - 2006)
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Old 06-21-2012, 01:26 PM
williamX5 williamX5 is offline
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Location: South Carolina
Join Date: May 2012
Posts: 70
Mein Auto: 01 540i/6 & 04 X5 4.4L
Faulty gas gauge...

Good day all!!

I am getting close to getting back home to my X5... I bought it cheap with more than a few things wrong with it... They were all fairly easy to fix, but the gas gauge issue has me stumped!!

I drove it to Florida for our cruise and that is when I noticed the gauge acting funny... It worked just fine during the trip expect after getting gas... If I filled it with 1/4 left on the gauge, it remained at that 1/4 level and continued to operate normally (as gas was used, it dropped)... Until it hit 0 miles left... I knew I had about 3/4 or so gas left so I just kept going... Sure enough, the next fill up (guessing) I only needed about 2/3 a tank... This time I cycled the ignition a few times... It reset on the fourth... The next fill up, it did it again, but I was closer to empty... I just drove for a while, then threw it in N, turned it off, then back on and restarted the truck... It cleared it... And on we drove...

So, what would keep the gauge from registering the new level, but still drop as normal? It's almost like the sending units in the tanks only give an initial reading, then the computer adjusts the gauge as the injectors fire... Seems like an odd way of displaying fuel...

Thanks all!!

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