Help, loss of engine power and engine malfunction light

335M_PR · 12-02-2012, 03:38 PM

I've been out having some fun lately with my N54 coupe. However, there is an issue taking place which has me worried. Whenever I'm under full acceleration (wide open throttle) and go past 125-132 mph the engine power dies on me and I get the yellow engine light indication on the trip computer area. It has happened at different speeds within that range. Once the power shuts I wait for a while and the engine indication resets and the engine operation returns to normal (I have the new upgraded resistance JB4 installed). Has this happened to anyone else? I don't know if it has to do with engine misfires or if it is a top speed governor. Any insight would be appreciated.

Leekay07 · 12-02-2012, 05:33 PM

Pull the codes but its not a misfire. Misfire trigger the SES light. Your talking about the car going into limp mode. It doesn't sound to be the water pump but could well be the fuel pump (low or high)

E93Blackhawk · 12-02-2012, 06:28 PM

the top speed governor is set at 155mph anyway so its not that

its probably the HPFP, pull the codes, you can't know until then really.

Fun w/N54 · 12-02-2012, 09:13 PM

What is your oil temp? Will go into limp mode at around 270 degrees.

Exzackt · 12-02-2012, 09:18 PM

i had this same problem.. Codes will probably be 29f2 and 29e2. Try changing your open fuel looping setting manually. You can learn how to do that on the jb4 sticky.. Except its now Future Use B not A on g5

If changing the fuel setting doesn't work. Probably the hpfp... just speculating though

12-02-2012, 03:38 PM	#1
335M_PR Got Boost? 7 Rep 55 Posts Drives: 2008 BMW E93 M3 Join Date: Oct 2011 Location: San Juan, PR iTrader: (0)	Help, loss of engine power and engine malfunction light I've been out having some fun lately with my N54 coupe. However, there is an issue taking place which has me worried. Whenever I'm under full acceleration (wide open throttle) and go past 125-132 mph the engine power dies on me and I get the yellow engine light indication on the trip computer area. It has happened at different speeds within that range. Once the power shuts I wait for a while and the engine indication resets and the engine operation returns to normal (I have the new upgraded resistance JB4 installed). Has this happened to anyone else? I don't know if it has to do with engine misfires or if it is a top speed governor. Any insight would be appreciated. __________________ 09' N54 335I Alpine White w/Coral Red Interior and Brushed Aluminum Trim/Sport Premium Package/Comfort Access/6 AT Steptronic/JB4 G5/BMS DCI/AR 3" Downpipes with Race CAT/ER Charge Pipe with Synapse BOV/2nd CAT Delete/M Tech Front Lip/M3 Rear Lip Spoiler
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12-02-2012, 05:33 PM	#2
Leekay07 Private First Class 5 Rep 104 Posts Drives: 08 335XI Sedan Join Date: Sep 2012 Location: NY iTrader: (0)	Pull the codes but its not a misfire. Misfire trigger the SES light. Your talking about the car going into limp mode. It doesn't sound to be the water pump but could well be the fuel pump (low or high)
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12-02-2012, 06:28 PM	#3
E93Blackhawk First Lieutenant 31 Rep 344 Posts Drives: 2008 335i M sport Join Date: Oct 2011 Location: London iTrader: (0)	the top speed governor is set at 155mph anyway so its not that its probably the HPFP, pull the codes, you can't know until then really.
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12-02-2012, 09:13 PM	#4
Fun w/N54 Lieutenant 39 Rep 592 Posts Drives: '11 E92 335is AW/CR/DCT Join Date: Apr 2011 Location: WI iTrader: (2)	What is your oil temp? Will go into limp mode at around 270 degrees. __________________ Evolution Racewerks FMIC and Charge Pipe with TIAL-Q. Wedge Tuned 93 Oct, K&N Panel, Conti DWS 245/275.
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12-02-2012, 09:18 PM	#5
Exzackt Second Lieutenant 9 Rep 255 Posts Drives: n54 e92 335i/e39 540i6 Join Date: Feb 2012 Location: SF Bay iTrader: (2)	i had this same problem.. Codes will probably be 29f2 and 29e2. Try changing your open fuel looping setting manually. You can learn how to do that on the jb4 sticky.. Except its now Future Use B not A on g5 If changing the fuel setting doesn't work. Probably the hpfp... just speculating though __________________ 2007 BSM 335i ZSP/ZPP l JB4 G5 ISO l E85 l BMS FLASH l METH l DCI l DPs l Twin BOVs l Scoops l 18" Forgestar F14sl Koni Yellows l Swift Spec-R l GForce Rivals/Slicks l Quaife LSD
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