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  #1  
Old 10-16-2010, 07:54 PM
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Quote:
Originally Posted by Thunder22 View Post
The fact that you don't see a problem, IS the problem.
I agree. I can't believe the jerks that fill their tanks with their cars running! It's like the idiots that smoke at the pumps.

To the OP (autoque), I have a 2008 X5 4.8i and I never have any problems filling it all the way to the top whether I'm using automatic mode or fast or slow pumps. I can't say why yours wouldn't be filling all the way. It would bother me but I don't know if it means that there is a problem or not...
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Old 10-12-2010, 11:15 AM
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1 take the car in. Could be a faulty fuel level sensor which I believe means new fuel pump. 2 Never fill a BMW with it running. You will get error message
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  #3  
Old 10-12-2010, 09:40 PM
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Originally Posted by MRV99 View Post
1 take the car in. Could be a faulty fuel level sensor which I believe means new fuel pump.
If a fuel level sensor is faulty then why would I need a new fuel pump? Shouldn't the fuel level sensor be replaced if it's faulty? I'm just using common sense.
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  #4  
Old 10-13-2010, 09:08 PM
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Faulty Sensor

The fuel sensor needs to be replaced. I had the same issue and the sensor was replaced and issue resolved. I only had a 1/4 of a tank when it was taken in and they filled it up to the top to ensure the problem had been resolved! Schedule an appointment.
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  #5  
Old 10-14-2010, 11:55 PM
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Originally Posted by bimmerxtc View Post
The fuel sensor needs to be replaced. I had the same issue and the sensor was replaced and issue resolved. I only had a 1/4 of a tank when it was taken in and they filled it up to the top to ensure the problem had been resolved! Schedule an appointment.
Ok thanks. I'll ask them about it.

It won't harm the vehicle though even if it's not fixed right?
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Old 10-15-2010, 12:22 AM
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Quote:
Originally Posted by autoque View Post
Ok thanks. I'll ask them about it.

It won't harm the vehicle though even if it's not fixed right?
It seems to me that there are two separate and distinct problems being described here.

Your initial post said (as I read it) that the gas station pump switched off before the tank was full. The tank wasn't full, and the gauge didn't read full. If you topped it off manually, the tank was then full, and the gauge read full. That isn't a sender problem, it is a problem of air being trapped, too fast a pump, etc. It isn't a vent problem, since the on-board system doesn't vent while filling. It is an annoyance, but nothing serious. It could be a pinched filler pipe, but that is unlikely.

Other posters are describing problems whereby the sender is malfunctioning, and the gauge is reading incorrectly. That is a different situation than you describe. If you fill the tank manually, all the way to full, and it still reads less than full on the gauge, then I would agree it could be the fuel sender. Also, if you don't top off the tank, but instead just turn the key off and on, and get a different gauge reading, then it could be the sender.
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Old 10-12-2010, 01:23 PM
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Agreed, never fill ANY car while running... the lack of a closed fuel tank vent system CAN trip a CEL light that will annoy you until it clears. Folks don't realize this, freak out, and was everyone's time with a dealer visit.

Second- OP- how much fuel do you get into your tank when you run it to empty? Could be a calibration issue.

(Oh, why do you stop at the first click, get in the car and start it, then get back out???? If this is the ritual, just give it half a gallon after it clicks the first time and be done with it!)
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Old 10-12-2010, 08:25 PM
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Quote:
Originally Posted by ard View Post
Second- OP- how much fuel do you get into your tank when you run it to empty? Could be a calibration issue.

(Oh, why do you stop at the first click, get in the car and start it, then get back out???? If this is the ritual, just give it half a gallon after it clicks the first time and be done with it!)
I don't remember 'cause it was some time ago I ran it empty and filled it up. I knew at the time but now the memory is sort of fuzzy.

I check after the first click because I don't want to run the risk of fuel flowing out of the fuel tank. Because when I try to pump it down after the first click, I have to sort of force it down click after click.

Quote:
Originally Posted by JDav
I have a similar issue:
When I fill up (and the pump "shuts off") and then get in and turn on the X, it only appears that I am halfway full. After driving for a bit, the fuel level gauge slowly goes up. Get home and turn the car off. Next morning, it still doesn't look full, but as I drive more, it goes slowly up again. Finally reaches about 7/8ths full before acting like normal and decreasing as I drive.
Actually this happens, somtimes, if I just drive away without filling up the last bar. I think it has something to do with the fuel getting hot and expanding so the gauge registers slowly as a bigger volume of fuel.

Yeah, like I said, it's not a big deal. Just wanted to make sure it's not going to haunt me back when the warranty's over.

Thanks all! Appreciate it.
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  #9  
Old 10-12-2010, 01:50 PM
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I have this problem only when the pump is set to automatic (meaning someone is not holding the pump)
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  #10  
Old 10-12-2010, 08:26 PM
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Quote:
Originally Posted by stockguru View Post
I have this problem only when the pump is set to automatic (meaning someone is not holding the pump)
I DO use automatic!
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