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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 04-05-2013, 03:31 PM   #1
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Join Date: Apr 2013
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My Ride: e46 320d 150
Won't start

where do I begin? At the start of the week my car struggled to start (320d 150) after a few goes it kicked into life. Later on that night when I finished work it refused to start. The truck garage in my work replaced the fuel filter, and after that never worked I called the rac who diagnosed the problem as a faulty fuel pump. I then had the fuel pump behind the drivers seat (right hand drive) replaced by the mechanics in work and the car ran fine for a day after this. I started it tonight and it died about one second later and wouldn't restart. Anyone got any clue what could be causing this? I noticed there are two fuel pumps beneath the back seat, could it be the wrong one which has been replaced? I'm at a loss as to what it could be. :-(
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Old 04-05-2013, 03:42 PM   #2
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You left out information:

Was the starter turning the engine?

Have you ever replaced your glow plugs (does this thing have glow plugs)?

If so, then FP could be the culprit assuming they replaced the wrong one.
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Old 04-05-2013, 03:43 PM   #3
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When you turn the key to position 2 (position 3 is start ).
Can you hear your pump come on? It should come on for a few seconds. What model exactly is your car? It only should have one fuel pump
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Old 04-05-2013, 03:51 PM   #4
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cheers for the replies. It's a 2004 320d 150. Theres defo what looks like 2 pumps under the back seat...both with electrical wiring going into them. Yeah mate its defo trying to start. Although its now got a flat battery after me trying to start it about 6 times
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Old 04-05-2013, 03:56 PM   #5
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glow plugs haven't been replaced that i know of, but the rac guy got it started and told me he had done a temp repair and to replace the fuel pump. it started fine after that and now wont start again a day later
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Old 04-05-2013, 05:12 PM   #6
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In non diesel, one is pump, the other 'pump' is just a sending unit...afaik...it goes bad often so when fuel gets below 1/2 tank, it doesn't send fuel from one lobe to the other. Your gauge could say you have gas, but you don't where the pump is.

But, check your battery voltage too...with car off...and if you get it started, with it on. Try jump starting it for grins.

There are some sensors, like crank sensor, that I think would cause car to start and die immediately...don't quote me.

Get your codes read.
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