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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 05-29-2012, 09:26 PM   #1
philandrews
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Join Date: May 2012
Location: Melbourne
Posts: 2
My Ride: Bmw 318i e46 1999
Bmw 318 e46 cold start problem / cuts out

Having trouble starting my bmw in the morning when its cold. I've taken it to two garages and there are no fault codes on the computer. I've replaced the MAF myself but it does not it seem to have made a difference. When its warmer I can start it easier, I need to rev it a bit then it will idle at around 1000rpm, seems fine on the open road too. Any help would be appreciated.

Made a quick vid which shows the issue.
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Old 05-30-2012, 03:49 AM   #2
jcjdavis1
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Join Date: Oct 2009
Location: Paisley Scotland
Posts: 158
My Ride: 323ise 1999 saloon
Hi. I have had the same problem for 3yrs, your cold is not as bad as ours but I have changed nearly every sensor and hose and still no luck. Good luck. Jim
PS Start with your vacuum hoses.
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Last edited by jcjdavis1; 05-30-2012 at 03:50 AM. Reason: Just watched the vid.
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Old 05-30-2012, 05:02 AM   #3
dmax
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Join Date: Aug 2006
Location: NJ
Posts: 22,809
My Ride: '99 328i 1.04646 mu
Check the sap hose from pump to valve...check the valve for a clog in the inlet (from decayed hose collecting inside it like mine).
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Old 05-30-2012, 07:39 AM   #4
mojako
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Join Date: Nov 2011
Location: Philippines
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This happened to me once (318i N42 engine). I just had my solenoid o-rings replaced.

I removed them, cleaned my solenoids and installed them again. Then the sputtering went away.
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