Loss of power

671rover · 04-22-2014, 11:13 PM

I was driving the other day (about 15 minutes into my drive, temp is in the high 80s) trying to overtake another car and heard a snap, didn't sound like a pop (seems to come from front right side) then loss of power. Noticed the sound of the exhaust is different when I accelerate too (lots of noise but pulls very slowly until the engine is at about 3000 rpm then a slight power bump if I take a quick stab at the throttle.). Pulled over to check if it was the charge pipe and it looks good. No check engine light at all. Car should be in the shop today. Anybody here have experienced, heard or know what might be the issue(s)? Thanks. BTW, the car is all stock except for n55 mids.

671rover · 04-23-2014, 12:09 AM

Yeah no cel with loss of power. Would any codes be thrown if the cel is not lit?

671rover · 04-23-2014, 01:06 AM

I don't have idrive, hopefully it threw a code.

OneM · 04-23-2014, 05:43 AM

Sounds very much like the charge pipe. When mine blew under similiar conditions as yours, there was no CEL either.

Check the charge pipe again, may have just popped out slightly or could be from another section down the pipe.

Kgolf31 · 04-23-2014, 06:29 AM

Could always be a blown coil.

Yellowceta · 04-23-2014, 07:16 AM

I have had a coil go out on me during a very similar situation, i.e. passing on the highway. I didn't hear any pop, and I did get a cel. However, the loud exhaust sound and lack of power until around 3k sounds very similar. Had no where to pull off, so I kept on driving. Five minutes later, everything was back to normal. No cel, no loud exhaust, power was back. Took it into the dealership and it was a bad coil. Maybe mine didn't completely go out, but was starting to get darn close.

671rover · 04-23-2014, 07:42 AM

Thanks for all your input. Took a closer look at the charge pipe and it did come off under the airbox, not sure if it broke or just came off (can't get a clear view). Wasn't able to put the clamp on since I didn't remove the airbox. Hopefully, this is the problem. Car is going in tomorrow, will keep you guys updated.

Artemis · 04-23-2014, 03:14 PM

See also issues #5a, 5b, 5c and 14 of the 1M issues log sticky:
http://www.1addicts.com/forums/showp...27&postcount=1

671rover · 04-23-2014, 10:08 PM

Thanks

04-22-2014, 11:13 PM	#1
671rover Private First Class 18 Rep 173 Posts Drives: '94 D90, '95 D90 SW, '11 VO 1M Join Date: Sep 2009 Location: (671) iTrader: (0)	Loss of power I was driving the other day (about 15 minutes into my drive, temp is in the high 80s) trying to overtake another car and heard a snap, didn't sound like a pop (seems to come from front right side) then loss of power. Noticed the sound of the exhaust is different when I accelerate too (lots of noise but pulls very slowly until the engine is at about 3000 rpm then a slight power bump if I take a quick stab at the throttle.). Pulled over to check if it was the charge pipe and it looks good. No check engine light at all. Car should be in the shop today. Anybody here have experienced, heard or know what might be the issue(s)? Thanks. BTW, the car is all stock except for n55 mids. Last edited by 671rover; 04-22-2014 at 11:25 PM..
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04-23-2014, 12:09 AM	#2
671rover Private First Class 18 Rep 173 Posts Drives: '94 D90, '95 D90 SW, '11 VO 1M Join Date: Sep 2009 Location: (671) iTrader: (0)	Yeah no cel with loss of power. Would any codes be thrown if the cel is not lit?
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04-23-2014, 01:06 AM	#3
671rover Private First Class 18 Rep 173 Posts Drives: '94 D90, '95 D90 SW, '11 VO 1M Join Date: Sep 2009 Location: (671) iTrader: (0)	I don't have idrive, hopefully it threw a code.
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04-23-2014, 05:43 AM	#4
OneM Private First Class 24 Rep 117 Posts Drives: 1M Join Date: Apr 2012 Location: Australia iTrader: (0)	Sounds very much like the charge pipe. When mine blew under similiar conditions as yours, there was no CEL either. Check the charge pipe again, may have just popped out slightly or could be from another section down the pipe.
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04-23-2014, 07:16 AM	#6
Yellowceta Private First Class 45 Rep 108 Posts Drives: 2011 VO 1M Join Date: Aug 2011 Location: Keller, TX iTrader: (0) Garage List 2011 BMW [0.00]	I have had a coil go out on me during a very similar situation, i.e. passing on the highway. I didn't hear any pop, and I did get a cel. However, the loud exhaust sound and lack of power until around 3k sounds very similar. Had no where to pull off, so I kept on driving. Five minutes later, everything was back to normal. No cel, no loud exhaust, power was back. Took it into the dealership and it was a bad coil. Maybe mine didn't completely go out, but was starting to get darn close. __________________ 1996 Trans Am WS6 (RiP) 2002 Trans Am Collector Edition WS6 - Not Stock @ 425 rwhp 2006 VW GTi - APR Goodies - Sold 2011 1M - VO Florida pick up 11/4/11 #554 of 740 - Sold 2017 ATS-V Stock
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04-23-2014, 06:29 AM	#5
Kgolf31 Brigadier General 459 Rep 4,531 Posts Drives: 2007 Z4MC, 2012 128i Join Date: Sep 2008 Location: Ohio iTrader: (4)	Could always be a blown coil.
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04-23-2014, 07:42 AM	#7
671rover Private First Class 18 Rep 173 Posts Drives: '94 D90, '95 D90 SW, '11 VO 1M Join Date: Sep 2009 Location: (671) iTrader: (0)	Thanks for all your input. Took a closer look at the charge pipe and it did come off under the airbox, not sure if it broke or just came off (can't get a clear view). Wasn't able to put the clamp on since I didn't remove the airbox. Hopefully, this is the problem. Car is going in tomorrow, will keep you guys updated.
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04-23-2014, 03:14 PM	#8
Artemis Moderator 29278 Rep 13,090 Posts Drives: BMW M2 Competition Join Date: Jun 2011 Location: Belgium iTrader: (0)	See also issues #5a, 5b, 5c and 14 of the 1M issues log sticky: http://www.1addicts.com/forums/showp...27&postcount=1 __________________ ///M is art ↔ Artemis
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04-23-2014, 10:08 PM	#9
671rover Private First Class 18 Rep 173 Posts Drives: '94 D90, '95 D90 SW, '11 VO 1M Join Date: Sep 2009 Location: (671) iTrader: (0)	Thanks
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