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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 02-03-2017, 04:50 PM   #1
sahilgill
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Join Date: Feb 2017
Location: Nanaimo
Posts: 1
My Ride: BMW 325i 2001
*rough idle and misfires* help

my 2001 325i idles very rough, flutters between 500-1000 rpm and occasionally drops low and car dies... engine light is on and cylinders 4,5 and 6 are misfiring (P0304 P0305 P0306) and camshaft exhaust sensor code.. what could be the problem / fixes to this??

Last edited by sahilgill; 02-03-2017 at 08:35 PM.
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Old 02-04-2017, 09:46 AM   #2
markusmarkus
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Join Date: Jul 2008
Location: USA
Posts: 5,909
My Ride: 2001 330Ci
Erratic idling is almost always caused by vacuum leakS. A visual inspection isn't enough, though you may find something obvious such as a torn intake hose. Have the intake smoke tested. Check the camshaft position sensor as it may be soaked with oil due to a bad seal.
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