Weird RPM Surge

junniior95 · 12-28-2013, 02:14 PM

Not paying much attention to it because it only happened once, my N55 only has about 24k and as i started it at work today the RPM shot up to about 1200-1400 which is usual but suddenly it dropped all the way down to 350-450 range drastically. The car felt like it was going to shut off so i drove it around the parking lot, shut it off and restarted and it was perfectly fine. Reason why the RPM went so high is also because its about 25-30 here in boston. Any idea or am i overreacting

Delta0311 · 12-28-2013, 02:20 PM

Could be a few things. If it keeps happening I would check for codes you might have a bad coil.

SUPAN · 12-28-2013, 02:21 PM

Update your software n it will be fine.

Tony135 · 01-05-2014, 01:37 AM

Happens to me all the time. Usually only when I'm on JB4.

junniior95 · 04-14-2014, 02:32 PM

Quote:

Originally Posted by SUPAN

Update your software n it will be fine.

A little late but just for anyone with the same problem and has a 2011 e90 335 N55 motor, dealer updated my software (DME) and the problem has been resolved.

SUPAN · 04-14-2014, 08:34 PM

Yeh

yEBMW · 04-14-2014, 09:54 PM

Quote:

Originally Posted by junniior95

A little late but just for anyone with the same problem and has a 2011 e90 335 N55 motor, dealer updated my software (DME) and the problem has been resolved.

So will the updated jb4 software be the fix or the dealer update? I'm out of warranty so will that cost me anything? Thanks.

junniior95 · 04-14-2014, 09:55 PM

Quote:

Originally Posted by yEBMW

Quote:

Originally Posted by junniior95

A little late but just for anyone with the same problem and has a 2011 e90 335 N55 motor, dealer updated my software (DME) and the problem has been resolved.

So will the updated jb4 software be the fix or the dealer update? Thanks.

Dealer software

Andrewe92 · 04-15-2014, 01:31 PM

had a similar issue a dme update did the trick, with weird rpm problems like these I've many times found the answer to be a simple dme update

12-28-2013, 02:14 PM	#1
junniior95 Lieutenant 38 Rep 427 Posts Drives: 2011 BMW 335i Join Date: Aug 2013 Location: Boston iTrader: (0)	Weird RPM Surge Not paying much attention to it because it only happened once, my N55 only has about 24k and as i started it at work today the RPM shot up to about 1200-1400 which is usual but suddenly it dropped all the way down to 350-450 range drastically. The car felt like it was going to shut off so i drove it around the parking lot, shut it off and restarted and it was perfectly fine. Reason why the RPM went so high is also because its about 25-30 here in boston. Any idea or am i overreacting
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12-28-2013, 02:20 PM	#2
Delta0311 Banned 7478 Rep 10,120 Posts Drives: 2011 BMW 335xi E92 2016 228xi Join Date: Apr 2009 Location: NJ iTrader: (1)	Could be a few things. If it keeps happening I would check for codes you might have a bad coil.
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12-28-2013, 02:21 PM	#3
SUPAN Private First Class 6 Rep 157 Posts Drives: E92 n55 335 2011 dct Join Date: Oct 2013 Location: Malaysia, KL iTrader: (0)	Update your software n it will be fine.
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01-05-2014, 01:37 AM	#4
Tony135 Lieutenant Colonel 178 Rep 1,516 Posts Drives: ‘22 Model 3 Join Date: May 2011 Location: SoCal iTrader: (0)	Happens to me all the time. Usually only when I'm on JB4.
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04-14-2014, 08:34 PM	#6
SUPAN Private First Class 6 Rep 157 Posts Drives: E92 n55 335 2011 dct Join Date: Oct 2013 Location: Malaysia, KL iTrader: (0)	Yeh
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04-15-2014, 01:31 PM	#9
Andrewe92 enthusiast 117 Rep 997 Posts Drives: 2011 e92 lci 335xi Join Date: Feb 2012 Location: NJ iTrader: (0) Garage List 2011 bmw 335 xdrive [10.00]	had a similar issue a dme update did the trick, with weird rpm problems like these I've many times found the answer to be a simple dme update
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