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  #1  
Old 08-24-2003, 06:57 PM
woohoo's Avatar
woohoo woohoo is offline
What to do...?
Location: SF Bay Area
 
Join Date: May 2003
Posts: 648
Mein Auto: 128i
Broken Fuel Gauge?

Strange thing happened today when I first started my car:

The fuel gauge went from the "empty" all the way to the "full" position (starting on level ground). Odd thing is, I had already driven 140 miles since my last fill up and the night before, the tank read 2/3 full! Usually it goes from "empty" to where the fuel level is. I drove a few blocks and it went down an 1/8 of a tank. The range on the OBC read 340 miles (wow, could I actually get 500 miles on a tank of gas?!).

I drove about 10 more miles and it went down 1/4. I ran some errands and started the car again and the gauge read almost full (about 7/8 full again). Unless someone put gas in my car while I was buying groceries, the gauge seems really screwed up. I got home and the thing went down a little, but no where near where it should be for having driven 160 miles.

Anyone else encounter this? It seems that the gauge is reading 1/4 more gas than I have. I've read the posts about corroded/defective fuel sensors but my 330i is 3 months old and has 2500 miles on it...?

I'm going to take it into the dealer tomorrow anyways.

Thanks in advance for the help!
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  #2  
Old 08-24-2003, 10:09 PM
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woohoo woohoo is offline
What to do...?
Location: SF Bay Area
 
Join Date: May 2003
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OK, I just came back from dinner (I drove) and now I have a full tank of gas. I didn't even fill it up!
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  #3  
Old 08-24-2003, 10:25 PM
marcelgood marcelgood is offline
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Location: Bay Area
 
Join Date: Jan 2003
Posts: 169
Mein Auto: 2004 330Ci
Mine is doing a similar thing. Not quite as crazy as you're describing it, though. I have 2800 miles on the car. It seems like the gauge needs some time to average out the actually fuel level in the tank. I don't know if it was doing that from the very beginning. I only noticed it after about 3 month, when it kinda danced around while I was looking at it, then it bumped up to full and over time it came back down to the correct level. I decided to keep an eye on it. It's not really a problem for me, but if you find out if this indicates a problem with the fuel gauge, please let me know.
  #4  
Old 08-25-2003, 06:35 AM
e46shift e46shift is offline
;p
Location: nj
 
Join Date: Oct 2002
Posts: 326
Mein Auto: bike w/ ET mod
its quite common
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  #5  
Old 08-25-2003, 09:48 PM
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woohoo woohoo is offline
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Location: SF Bay Area
 
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Posts: 648
Mein Auto: 128i
I see... I actually talked to my friend and this has happened to him too. His gauge seemed to fix itself after a couple days. Mine is behaving a little better now--it probably only overstates the amount of fuel by < 1/8.
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  #6  
Old 09-01-2003, 11:06 PM
Dan325ci Dan325ci is offline
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Location: N.A.
 
Join Date: Mar 2002
Posts: 34
Mein Auto: 325ci
Wow, looks like they still havent fixed this problem after all these years

Ive had about 5 or 6 sensors put in already. They seem to fail every few months.


Quote:
Originally Posted by woohoo
I see... I actually talked to my friend and this has happened to him too. His gauge seemed to fix itself after a couple days. Mine is behaving a little better now--it probably only overstates the amount of fuel by < 1/8.
  #7  
Old 09-02-2003, 01:50 AM
fuz fuz is offline
non sequitur
Location: Bay Area, Cali
 
Join Date: Feb 2002
Posts: 888
Mein Auto: 325i | 2002
I had this not too long ago. Both of my gas tank sensors failed on a 2002 325i and read about 1/4 of a tank when I ran out of gas...
  #8  
Old 09-03-2003, 09:39 PM
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woohoo woohoo is offline
What to do...?
Location: SF Bay Area
 
Join Date: May 2003
Posts: 648
Mein Auto: 128i
Yeah, mine still acts a little strange at times. I guess I better get it fixed before I go to Buttonwillow. I wouldn't want to run out of gas on the track!
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  #9  
Old 09-09-2003, 01:20 AM
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Bimmer ese Bimmer ese is offline
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Location: Moore, OK
 
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Mein Auto: 04 X5, 01 330i
Quote:
Originally Posted by woohoo
I see... I actually talked to my friend and this has happened to him too. His gauge seemed to fix itself after a couple days. Mine is behaving a little better now--it probably only overstates the amount of fuel by < 1/8.
Just did a search on the topic of "fuel gauge", and was quite relieved at the fact I was not alone in the abnormal fuel gauge category. Last Thursday before I left the states to come back here, filled up the car when the tank was half full, and noticed the gauge did not go to full. Tried restarting the car several times to see if it would reset itself. No luck. So I asked my pops to check it out and take it to the dealer to have them look at it. On the way to the dealer, my father told me it corrected itself. Hopefully, it will never happen again.

Dan
  #10  
Old 10-11-2003, 04:08 PM
Argo Argo is offline
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Location: CT
 
Join Date: Sep 2003
Posts: 19
Mein Auto: 04 325CI
I have a similar problem with my fuel gauge.
Today, the fuel gauge needle waved back and forth about 10 seconds and settled down to be steady after a few minutes of driving. However, the fuel estimate is way higher. I reset the trip-meter when I filled up and have driven 250miles since. The needle is now right at the middle . I usually get about 350~400 miles from a full tank.
I am going to bring in the car for a service soon.
Does anyone know if there is a TSB for this so that I don't have to deal with "could not reproduce the problem BS".
  #11  
Old 10-12-2003, 10:13 AM
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Raffi Raffi is offline
Hi
Location: L.A.
 
Join Date: May 2002
Posts: 4,483
Mein Auto: Frankenstein monster
Quote:
Originally Posted by Argo
Does anyone know if there is a TSB for this so that I don't have to deal with "could not reproduce the problem BS".
Do a search for previous posts of mine with the words "fuel" and "sending units" and you should find a couple of threads discussing this problem. Many others here have had the same problem, it is a known issue which your dealer should be able to duplicate and fix.
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  #12  
Old 10-12-2003, 04:28 PM
Argo Argo is offline
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Location: CT
 
Join Date: Sep 2003
Posts: 19
Mein Auto: 04 325CI
Quote:
Originally Posted by Raffi
Do a search for previous posts of mine with the words "fuel" and "sending units" and you should find a couple of threads discussing this problem. Many others here have had the same problem, it is a known issue which your dealer should be able to duplicate and fix.
Thanks for the info. Raffi. It seems like I have the same problem as you and Dan325CI, which means possibly multiple trips to dealer for this problem. Is it just me or this whole thing with the faulty fuel sending unit not being fixed for years so retarted?
  #13  
Old 10-12-2003, 07:52 PM
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Raffi Raffi is offline
Hi
Location: L.A.
 
Join Date: May 2002
Posts: 4,483
Mein Auto: Frankenstein monster
Quote:
Originally Posted by Argo
Is it just me or this whole thing with the faulty fuel sending unit not being fixed for years so retarted?
It's just a matter of BMW using faulty/low quality parts from their supplier.
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