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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 Wed, Dec-01-2010, 01:56:20 PM   #11
d3x74
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Not sure how you'd test for a faulty fuel pump. :/

All I know is I had the exact same symptoms and a few days later the fuel pump died on me, stranding me on the road.
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Old Wed, Dec-01-2010, 03:18:26 PM   #12
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I have had the exact same thing happen to mine plenty of times. I am also running the afe cai. My car has 22,000 on the clock so I doubt the problem would be the fuel filter. I don't see it as a big problem since it always starts right back up though. Kinda curious as to what can be done to help prevent this in the future.
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Old Wed, Dec-01-2010, 04:13:32 PM   #13
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There seems to be a lack of information on this topic, but seems like these symptoms come up all the time. I'd like to see what is the root cause and the solution.

I tend to think it's NOT the fuel pump only because I am experiencing other erradic idle issues, so I think it's electrical or related to the idle control system. Vehicle starts right up after it stalls and idles fine once restarted.

I really want to clean out my ISV. But, having trouble finding it! Is it buried way under the intake manifold thing???? I've attached a picture of it from Real OEM, below.

I believe it is item #1 pictured below:



I've got the elbow and the top of the air filter box removed and still can't see it. Having to pull apart all the throttle body clamps and wrestle the intake plenum off doesn't sound like fun. But, it seems so far under there that I can't even see it.

How does one access this part to clean or replace it???
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Old Thu, Dec-02-2010, 02:31:46 AM   #14
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Can ANYONE tell or show me the location of item #1 in the picture above??

Is it under the intake manifold.
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Old Thu, Dec-02-2010, 06:44:44 AM   #15
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Yes under the intake manifold bolted on your block. You have to remove the whole intake manifold. Can be a PITA with the throttle body clamps.

Unless you're great at isolating the issue, a good bet is to get with an indy or dealer with a GT1 or similar to check all the likely components or you're just going to spend good money on suspect advice.

It could also be your throttle actuator but at over $400, do you want to gamble?
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Old Thu, Dec-02-2010, 12:30:26 PM   #16
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Quote:
Originally Posted by Ccrider727 View Post
I have had the exact same thing happen to mine plenty of times. I am also running the afe cai. My car has 22,000 on the clock so I doubt the problem would be the fuel filter. I don't see it as a big problem since it always starts right back up though. Kinda curious as to what can be done to help prevent this in the future.
Do you have an intake hose running up from the brake duct? The PO did that to mine, which is what was causing the issue. Blocking that extraneous duct did the trick for me. I also have 24k on the clock, and as I stated in my earlier post, my mechanic checked the maf while I was driving and he was seeing huge cfm numbers compared to stock.
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Old Thu, Dec-02-2010, 03:02:00 PM   #17
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I had the same problem and it was my intake, it didn't have the MAF screen in it and when I put that in, it never stalled at the lights again.
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Old Thu, Dec-02-2010, 07:07:19 PM   #18
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Quote:
Originally Posted by AW-M3 View Post
Do you have an intake hose running up from the brake duct? The PO did that to mine, which is what was causing the issue. Blocking that extraneous duct did the trick for me. I also have 24k on the clock, and as I stated in my earlier post, my mechanic checked the maf while I was driving and he was seeing huge cfm numbers compared to stock.
Yes I do have the hose from the brake duct under the filter. How did u go about blocking this? And wouldn't blocking that off take away from fresh air to the intake?
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Old Thu, Dec-02-2010, 08:38:49 PM   #19
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Maybe you want to try a different cleaner on the MAF too. Not sure if brake cleaner is good for the MAF.
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Old Thu, Dec-02-2010, 08:59:40 PM   #20
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Quote:
Originally Posted by WRX2BIMA View Post
hahaha i was thinking the same thing.. "edit before posting brahh"

only mods can edit titles of threads.
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Discussing Car stalls ransomly when coming to a light... 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)