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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E46 (1999 - 2006)

E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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  #1  
Old 11-17-2012, 10:04 AM
cflood330ci cflood330ci is offline
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Mein Auto: 2002 bmw 330ci
2002 bmw 330ci fuel pump

hi im trying to see if anyone could tell me why my 2002 bmw 330ci fuel pump wont come on i replaced the whole pump and the filter and the relay and everything else works but the pump wont come on what should i do
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  #2  
Old 11-17-2012, 11:36 AM
TannerT TannerT is online now
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Mein Auto: 03 330ci 3pdl 89 325i
You checked all connectors and fuses

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  #3  
Old 11-17-2012, 11:42 AM
cflood330ci cflood330ci is offline
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Mein Auto: 2002 bmw 330ci
Yes the fuse and the relay are good
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  #4  
Old 11-17-2012, 11:44 AM
cflood330ci cflood330ci is offline
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Mein Auto: 2002 bmw 330ci
It will turn over and everything but will not start and the fuel pump wont come on so i have no fuel pressure
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  #5  
Old 11-17-2012, 12:25 PM
shadow 2 shadow 2 is offline
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Is the pump getting current?
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  #6  
Old 11-17-2012, 01:02 PM
cflood330ci cflood330ci is offline
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No no current idk what to do
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  #7  
Old 11-17-2012, 01:24 PM
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mlukas161 mlukas161 is online now
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Did you check the relay in the compartment under the hood?

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  #8  
Old 11-17-2012, 02:07 PM
cflood330ci cflood330ci is offline
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Yes i have
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  #9  
Old 11-17-2012, 04:22 PM
cflood330ci cflood330ci is offline
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The car drove fine befor i got this problem all wen my crankshaft position sensor went out and wenever i changed it is when it started doing this the fuel pump wont come on so i replaced it and the filter and the relay and it still wont come on
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  #10  
Old 11-17-2012, 11:11 PM
GoForthFast GoForthFast is offline
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Need to go back to basics. Check to make sure the connector at the pump is fully seated?
If OK there, need to check for voltage back at the pump?
If voltage, perhaps a bad new pump. If no voltage, have to trace back the circuit.
Let us know what you find when you do these tests.

Intermittent electrical problems are the worst to track down.

Last edited by GoForthFast; 11-18-2012 at 10:14 PM.
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  #11  
Old 11-18-2012, 01:47 PM
cflood330ci cflood330ci is offline
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I got the car to start i drove it to town and back home but now it wont start again
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  #12  
Old 11-19-2012, 03:38 AM
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wdgiles wdgiles is offline
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Mein Auto: 2001 325i
Mine has been doing the same thing this weekend, won't start, wait a day, then it works with no explanation. I was able to start it briefly with some engine start into the intake, but now it doesn't work again. Don't worry you're not alone.
I have '01 325, but same basic setup, I've confirmed I have voltage at the pump but no response from the pump itself, so you're one step ahead of me. I plan to get the replacement installed today.
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