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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 05-11-2013, 01:41 PM   #1
bearvsbryan_
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Join Date: Nov 2012
Location: Houston, Texas
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My Ride: 2005 M3
M3 won't start!

Hey guys, just looking to see if I could get some help with an issue I'm having. About 3 weeks ago my 05 M3 with just over 100k miles stalled out on me while driving home. Got it towed, figured out my fuel pump had failed so I ordered a new Walbro pump, replaced it and the car ran fine for about a week until it stalled out again. The car will start and idle just fine until I give it some gas and then it just sputters and dies. I then have to wait about an hour before it will start again. Figured it might be the relay or the fuel filter so I ordered both and replaced them last night to no avail. Car won't even turn over now. I've got a new pressure regulator which I haven't installed yet, but I'm not sure that's even the problem. If anybody could lead me in the right direction I would really appreciate it.
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Old 05-11-2013, 06:15 PM   #2
bearvsbryan_
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Update: installed new pressure regulator and replaced fuse #54 and the car still won't start. Any final suggestions before I have the car towed to a shop would be awesome.
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Old 05-11-2013, 07:10 PM   #3
awszach
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hoping you get something before you have to take it to the money pit
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Old 05-11-2013, 07:30 PM   #4
BWOODM3
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M3 won't start!

Check your battery. Try this it's free.

Did you replace the fuel filter?(only a few bucks and should have a new one in it after you paid big bucks for the fuel pump)

Take a fuse tester light (few bucks and can be useful in the future) and test All the fuses. It won't take long.




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Old 05-11-2013, 07:31 PM   #5
BWOODM3
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M3 won't start!

Sorry just realized you already replaced the fuel filter. Any sings of something leading up to this?


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Old 05-11-2013, 07:40 PM   #6
bearvsbryan_
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Posted a duplicate reply on accident, sorry

Last edited by bearvsbryan_; 05-11-2013 at 07:47 PM. Reason: Duplicate reply
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Old 05-11-2013, 07:41 PM   #7
bearvsbryan_
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Checked the battery and it's fine. There were no signs or even a check engine light popping up. What bugs me is that before replacing all these parts the car would at least start and idle. Now it won't turn over at all.
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Old 05-11-2013, 07:59 PM   #8
dmax
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Not sure if that's an OE FP, but you know, if it worked for a week, it might be the FP still.

There's also a Kalim fuse...20 amp in the fuse pack in e-box...that will cause cranking/no start.

Search 'cranking no start' using advanced/title search.

Ask in regional forum for someone with a code reader too...search for your codes in title search too if you get them.
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Old 05-13-2013, 06:41 PM   #9
bearvsbryan_
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Checked the fuse you were talking about and it's not blown or anything so we can rule that out. It's not an OE FP so you might be right. I'll check the pump ASAP.
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