2009 e61 Misfire, rough cold starts - Bimmerfest - BMW Forums



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E60 / E61 (2004 - 2010)
BMW 5-Series E60 Sedan was first seen in the Unites States in the fall of 2003 with a 2004 Model Year designation. The E61 wagon followed shortly there after. The E60/E61 5 series is now available as a 528i, 528xi, 535i, 535xi, 550i and a 535xi sports wagon! -- View the E60 Wiki

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  #1  
Old 08-05-2019, 07:40 PM
WillyGn54 WillyGn54 is offline
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Mein Auto: 2009 535xi e61
2009 e61 Misfire, rough cold starts

Hey Guys,

I've been lurking around on this forum for a month or two now and after searching and searching for answers I've decided to make my own post outlining my problems with my 09 535xi touring. I bought the car about two months ago with only 54,000 miles. I had the intake valves cleaned of their carbon and a new alternator installed. The car has ran great up until the last few weeks. The first symptom I noticed was rough cold starts. After letting the car sit overnight, I come to start the car in the morning, and after about 4-8 seconds of cranking the car manages to stumble to life. This continued for the next few days. One day I came to start my car again after letting it sit overnight. The car stumbles to life and is misfiring horribly. The whole car is shaking. I turn off the car, wait ten seconds, start it again, and its running perfectly again. Strange. Over the next couple days I started to off and on feel a sudden jolt in the car as if it was misfiring just once while driving. I decided to change the coils and spark plugs, and the car ran better for a day or two, and then back to the same business. But since a week ago, everyday on my drive to work while cruising at around 70 mph, I get an "Engine Malfunction: Reduced Engine Power" message almost every time I hit roughly 3,000 rpm. I pull over and restart the car, and its business as usual again. Since I know the coils and plugs are good, could bad fuel injectors be my problem? I loaded up INPA on my laptop and read the codes and I have a knock code in cylinders 4 and 6. More recently, the cold starts have gotten much worse. The whole car is shaking for about 5 min, and then it smoothes out, but I can still feel slight hesitations/misfires after that. Any help would be appreciated. I can provide any INPA data you would like. BTW the car is fully stock except for DCI. Thanks in advance.
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  #2  
Old 08-06-2019, 10:32 AM
zoom750 zoom750 is offline
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Have you ruled out high pressure fuel pump?

Recently I had the "Engine Malfunction" warning. Found two codes: 0029F2 and 0029F3. Replaced the low pressure fuel sensor and line to address the first code, and replaced the high pressure fuel pump to fix the latter. This is on a 2010 e60 with 76,000 miles.
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Old 08-06-2019, 10:37 AM
WillyGn54 WillyGn54 is offline
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Location: Nashville
 
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Mein Auto: 2009 535xi e61
I haven't ruled out the hpfp. I will look into that today. Also I have noticed the injectors have become EXTREMELY loud. So loud that they are setting off the knock sensor for bank 2. INPA says cylinders 4 and 6.
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Old 08-06-2019, 12:58 PM
TREYBMWS TREYBMWS is offline
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Mein Auto: BMW 530i
I would check this video out if.I was you this might help

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