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Old 11-17-2012, 09:24 PM
Steve530 Steve530 is offline
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Location: Knoxville, TN
 
Join Date: Dec 2007
Posts: 1,281
Mein Auto: 2001 530i
It could be a fuel pump problem. There's also a suction jet pump in the fuel tank that transfers fuel from one side of the tank to the other.

But I agree that the fuel filter would be the first thing to change. It's easier than changing the fuel pump.

I just did that last weekend on my 2001 530i. I didn't have any codes, but the mile to empty would drop very quickly when the fuel level low. I don't know it that problem is fixed, but it appears my fuel economy has improved.
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2001 530i/5 S+P CDV delete/Akebono ceramic pads
M5 SSK/RedLine MTL/M5 rear sway bar/Bilstein HD
OSRAM CBI

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