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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Mon, Mar-20-2017, 09:21:43 PM   #1
trippower
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Default M3 e46 Crank No Start

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Had my 2002 BMW M3 (SMG) parked for the winter, In my garage. I was forced to park my car out on the street one night where it sat over night, Next morning went to start my car and the car cranked and cranked but would not start, my gas tank was nearly empty, the temperature outside was in the negatives. Filled it back up with gas, still nothing, replaced the fuel pump, still nothing, replaced the fuel filter, still nothing, no check engine light, newer spark plugs and coils.I can hear the fuel pump priming, and the car cranks, almost starts and dies back out. I tried all my spare keys, I thought it could be a DME issue still nothing. Im at a loss right now of where to check next.

Here's a link of what the car is doing



Last edited by trippower; Mon, Mar-20-2017 at 09:33:07 PM.
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Old Mon, Mar-20-2017, 09:45:30 PM   #2
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Default M3 e46 Crank No Start

Do you hear your fuel pump priming prior to engine start attempt? Maybe a fuse is broken?

It's interesting how the started stops while the revs go up then tries starting right after the revs fall.
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Old Mon, Mar-20-2017, 09:53:12 PM   #3
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Default Re: M3 e46 Crank No Start

Yes I can hear the fuel pump priming before I attempt to start the car, I did check fuse 54 I believe, it was a yellow 20 amp fuse that was labeled fuel pump, and it was fine.
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Old Mon, Mar-20-2017, 09:56:36 PM   #4
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Default Re: M3 e46 Crank No Start

Check the shrader valve at the fuel filter to see if there is actual pressure. If there isn't then I'd assume something is wrong with the pump even though it sounds like it primes?
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Old Tue, Mar-21-2017, 12:30:15 AM   #5
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Default Re: M3 e46 Crank No Start

Unplug your MAF and see if it starts. Just had a fella on facebook post a question like this, and as soon as he unplugged his MAF the damn thing started running fine on the backup failsafe air map I guess.

His would crank and try to start, but almost like as soon as it even fired once it would stop.
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Old Tue, Mar-21-2017, 12:45:49 AM   #6
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Default Re: M3 e46 Crank No Start

Ill give it a try!
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Old Tue, Mar-21-2017, 04:44:51 AM   #7
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Default Re: M3 e46 Crank No Start

Still nothing.
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Old Tue, Mar-21-2017, 09:46:52 AM   #8
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Default Re: M3 e46 Crank No Start

Do you have INPA? Try syncing your EWS.
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Old Tue, Mar-21-2017, 01:33:36 PM   #9
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Default Re: M3 e46 Crank No Start

Had a very similar problem. Turned out to be the fuel pump. The pump will come on but couldn't hold pressure.


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Old Tue, Mar-21-2017, 04:28:58 PM   #10
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Default Re: M3 e46 Crank No Start

Okay, so you've eliminated the fuel pump and the MAF. I would lean towards the key being the issue, like these guys are saying, if you have new spark and coils.
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Discussing M3 e46 Crank No Start in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)