limp mode not limping? wtf?

R8TD-M · 10-07-2014, 12:48 PM

Guys anyone ever have this issue? Any comments or insight is much appreciated.
Driving down 495 this morning, got on the throttle in 4th 2 times in short succession (had to get around some traffic)
The half engine (CCID 29 (reduced engine power)) warning pops up, but no CEL / SES lights up.
JB4 did not drop to MAP4, stayed where it was in MAP 5.
car ran and drove fine, still boosting at target levels (Boost on Fuel is enabled), set the JB to map 1 and pushed right around 12psi, so seems solild.
Oil temps all normal, was driving pretty easy in general so was around 220-230. No idea on coolant temps, but im sure it was in spec.

Drove all the way up to exit 8 off rte 3, pulled into gas station, shut the car down, started up, half engine / limp mode notification is gone, drove the car around at lunch today, everything seems normal, and have no SES light at all.
Havent scanned for pending PID codes but what the hell is going on? I suppose its nothing major to worry about, since the car is running all normal, i guess im fine - just want to see if anyones got some insight or had a limp mode with no limping happen to them?

thanks guys

Down_Shift · 10-07-2014, 03:15 PM

early signs of injectors or plugs.

Now that it's colder, you'll get these symptoms bit more often.

R8TD-M · 10-07-2014, 04:26 PM

Quote:

Originally Posted by Down_Shift

early signs of injectors or plugs.

Now that it's colder, you'll get these symptoms bit more often.

Cool thanks for the feedback. Anyone know if either the dme or JB logs a fault code I can read to see which cylinder the issue was on? Tulley BMW recently did plugs coils and one injector plus a walnut blast, so I'm guessing injector is to blame. If the dme has something it's stored as pending cuz no SES light

Welterweight · 10-07-2014, 04:40 PM

Love hate relationship with the N54!!!!

I have done plugs, coils and walnut blast......still noticing things on occasion.

But damn the power is nice. GL with this man I am sure I will encounter it within the year

lbzkid101 · 10-29-2014, 02:29 PM

Who is your service advisor at tulley , do you got to Manchester or nashua

eric@helix · 10-29-2014, 02:33 PM

I see a set of plugs in your near future.

R8TD-M · 11-01-2014, 06:33 AM

Quote:

Originally Posted by lbzkid101

Who is your service advisor at tulley , do you got to Manchester or nashua

Manch, and i forget his name. Sits at the first desk on the left when you walk into the SA area. Good guy.

10-07-2014, 12:48 PM	#1
R8TD-M Second Lieutenant 19 Rep 208 Posts Drives: E92 M3 DCT Join Date: May 2013 Location: Manch iTrader: (0) Garage List E90 328Xi [0.00] E92 BMW M3 [10.00] 1997 Toyota 4Runner [0.00]	limp mode not limping? wtf? Guys anyone ever have this issue? Any comments or insight is much appreciated. Driving down 495 this morning, got on the throttle in 4th 2 times in short succession (had to get around some traffic) The half engine (CCID 29 (reduced engine power)) warning pops up, but no CEL / SES lights up. JB4 did not drop to MAP4, stayed where it was in MAP 5. car ran and drove fine, still boosting at target levels (Boost on Fuel is enabled), set the JB to map 1 and pushed right around 12psi, so seems solild. Oil temps all normal, was driving pretty easy in general so was around 220-230. No idea on coolant temps, but im sure it was in spec. Drove all the way up to exit 8 off rte 3, pulled into gas station, shut the car down, started up, half engine / limp mode notification is gone, drove the car around at lunch today, everything seems normal, and have no SES light at all. Havent scanned for pending PID codes but what the hell is going on? I suppose its nothing major to worry about, since the car is running all normal, i guess im fine - just want to see if anyones got some insight or had a limp mode with no limping happen to them? thanks guys
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10-07-2014, 03:15 PM	#2
Down_Shift Captain 190 Rep 739 Posts Drives: Slay Join Date: Jan 2011 Location: Beantown iTrader: (4)	early signs of injectors or plugs. Now that it's colder, you'll get these symptoms bit more often.
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10-07-2014, 04:40 PM	#4
Welterweight Major 98 Rep 1,321 Posts Drives: Truck in snow, coupe in summer Join Date: Jan 2013 Location: Boston iTrader: (3) Garage List 2012 BMW 328i [0.00] 2005 Dodge Ram Quad ... [0.00] 2009 BMW 335xi E92 [10.00]	Love hate relationship with the N54!!!! I have done plugs, coils and walnut blast......still noticing things on occasion. But damn the power is nice. GL with this man I am sure I will encounter it within the year __________________ 2009 BSM E92 335xi - RR600's/FBO-VRSF/Apex Arc 8/Wedge E60 MHD/Fuel it Stage 2/BMW PE w/ Dimisa Tips/Alpina TCU/Dinan Springs/RB Inlets/3.5 Bar TMAP
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10-29-2014, 02:29 PM	#5
lbzkid101 Private 0 Rep 61 Posts Drives: 07' 335xi Join Date: Jun 2013 Location: SNH iTrader: (0)	Who is your service advisor at tulley , do you got to Manchester or nashua
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10-29-2014, 02:33 PM	#6
eric@helix 210 Rep 1,161 Posts Drives: 01 M Coupe, 08 135i, '12 328i Join Date: Jul 2007 Location: Philadelphia iTrader: (0)	I see a set of plugs in your near future.
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