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BMW 3-Series (E90 E92) Forum
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Engine Missfire....
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01-30-2009, 07:42 PM | #23 |
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yep. OBDII codes and limp modes.
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01-31-2009, 09:47 AM | #25 |
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01-31-2009, 10:56 AM | #26 |
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Are the peeps that are getting misfires in cold weather running a piggy? I've had no problems at all down to -40 and a month of -30's. I have a boost guage and notice that the Dinan tune (like stock) lowers boost when it gets colder.
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01-31-2009, 11:28 AM | #27 |
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I just got my car back with the same issue as the OP....they replaced 3 of my injectors, all 6 spark plugs and the fuel pump, and flashed to 32.1. The car runs fine now but it threw a code on the way home from the dealer which I got checked yesterday and it shows 2 of my O2 sensors are fried from the original crazyness that went down 3 weeks ago. When the nasty white smoke was coming from the exhaust the injectors were putting WAY TOO MUCH FUEL into the engine. SO they ordered me 2 new O2 sensors and will install them next week. For the time being I still notice that I can see gas fumes from my exhaust on the shadow reflection on the ground....Wonder if thats normal after the whole fix.
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02-05-2009, 05:20 PM | #28 | |
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02-05-2009, 05:23 PM | #29 |
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03-13-2009, 01:49 PM | #30 | |
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Hmmm...I was worried about this. So, how can they diagnose carbon buildup? Do they have to use a borescope down the intake? This concerns me because I think my 335 feels slighly less zoomy than some that I test drove.
I wonder if spraying some fuel injector cleaner or even windshield washer fluid down the intake now and then would help? Hey...I just remembered...has anyone heard of GM top-end cleaner? A lot of people swear by it. I wasn't sure about using it on a turbo motor, but I googled and found this on a GMC Typhoon forum... Quote:
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03-14-2009, 10:18 PM | #31 |
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BMW of San Diego. Its there again as we speak, took it in on Thursday and hope to get it back no later than Tuesday. They are working on the misfire issue, the rear window that sticks when rolled down, the noisy transmission.
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03-14-2009, 10:45 PM | #32 |
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Could carbon buildup explain why my car has a really rough idle at times? Typically my car idles at 600 rpm steadily, but more and more once the car has warmed up, the rpm's will drop to under 500 and bounce up and down as the car shakes. Could that be a misfire or carbon buildup? I'm taking my car in next week for service, just curious if you guys think I should mention this to my SA.
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03-15-2009, 11:15 AM | #33 | |
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03-15-2009, 11:29 AM | #35 |
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03-18-2009, 01:41 PM | #36 |
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I had misfires on cylinder 2 yesterday on map 6. I have 67200 km on the original plugs so that should be the problem. Car shutters like a bitch. Runs perfect on map 0 though. I guess the plugs aren't up to the task with high boost. Takin it to the dealer so they can see if the coils are gone as well. Anyone else see this issue only when boost is increased?
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03-19-2009, 06:24 AM | #37 |
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sigh, soo true. feel free to say buy the extended warranty... but still WTF it sounds like this car is going to die right after 4/50k. fuel pump,spark plugs,carbon build up, wastegate rattle,exploding sunroofs, and a few other less frequent things. So my question is such (for those bmw veterans) ... is there any hope the repair parts for the above concerns will be a different revision that will eliminate the return of this crap ? ppp
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03-19-2009, 08:54 AM | #38 |
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Mine was harder to get up than that, the last time took nearly 15 minutes of trying. They replaced the motor and now its working great.
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03-31-2009, 06:15 PM | #39 |
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I just had all 6 injectors replaced on my 69,253 mile E92... same deal, rough choppy acceleration iat highway speeds...
PUMA case 22999841 sited... anyone know if injector : 13-53-7-585-261 is a new replacement for the injector that would have been placed into a 9/06 build E92? THe piezo electric ... ~Frost
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03-31-2009, 07:13 PM | #40 |
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My tech indicated that most of the major problems he services on N54 engine (and he's seen it all) are ultimately related to bad gas.. sucks for those of us in Cali, I don't think these cars were really engineered to run on 91, so now I'm always mixing in a little race gas to raise the octane level.. I wonder how long I'll go before needing a new fuel pump, 7500+ miles and counting though..
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04-28-2009, 11:51 AM | #41 | |
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bad gas might cause the problem but not if you are stock. and if its a constant misfire in one cylinder its probably the injectors or spark plug
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04-28-2009, 11:56 AM | #42 | |
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