Limp Mode/Engine and car shuddering

Phil G · 01-10-2009, 02:31 AM

So, I was on I-20/59 headed back to Tuscaloosa from Birmingham when the limp mode (Engine Malfunction! Reduced Power!) message came up. Immediately, I noticed that my engine shuddered very mildly when cruising, slightly more intense during acceleration, and very significantly during idle. The shudder is significant enough that when I sat down to write this post I still felt like I was shaking as I just got out of the car

. This seems like one of the cylinders is misfiring, but I thought maybe ya'll would have a different idea of what the problem could be. This is pretty frustrating, my BMW dealer kept my car for a week not too long ago to fix the wastegate rattle!!

2e9x's · 01-10-2009, 08:09 AM

Probably fuel pump. Any long cranks? Car stock?

eunosracr · 01-10-2009, 08:13 AM

I'd bet it's the HPFP.

enrita · 01-10-2009, 08:17 AM

i wonder if all hpfp issues are related to poor gas quality in the US. I have never heard of this problem in sweden. tried to search on different forums here locally and nothing came up.

sflgator · 01-10-2009, 08:31 AM

Sounds like HPFP. Bring it to your dealer.

RiXst3r · 01-10-2009, 08:44 AM

HPFP...

Phil G · 01-10-2009, 11:47 AM

Quote:

Originally Posted by 2e9x's

Probably fuel pump. Any long cranks? Car stock?

No long cranks, just plenty of shuddering. I thought maybe because it still cranks normally it wouldn't be the HPFP, but I have only cranked it once since then so I could very well be wrong. Is this serious enough I really shouldn't be driving the car until I need to take it to the dealer? I would like transportation for the weekend if I can, but will just bear it if it can potentially damage my engine.

BTW, my car is a 2/07 build with almost 37k miles, and yes the car is stock.

Hit_Apex · 01-10-2009, 11:54 AM

Try driving it again. The limp mode (what you call shuddering) will reset and may drive fine. If it limps immediately again then you need to have it diagnosed.

335icandy · 12-17-2011, 02:59 AM

What was the result of the diagnosis?

01-10-2009, 02:31 AM	#1
Phil G Dominator of Deep South curvy roads 51 Rep 340 Posts Drives: '07 335i Coupe Join Date: Apr 2006 Location: Atlanta, GA iTrader: (0)	Limp Mode/Engine and car shuddering So, I was on I-20/59 headed back to Tuscaloosa from Birmingham when the limp mode (Engine Malfunction! Reduced Power!) message came up. Immediately, I noticed that my engine shuddered very mildly when cruising, slightly more intense during acceleration, and very significantly during idle. The shudder is significant enough that when I sat down to write this post I still felt like I was shaking as I just got out of the car . This seems like one of the cylinders is misfiring, but I thought maybe ya'll would have a different idea of what the problem could be. This is pretty frustrating, my BMW dealer kept my car for a week not too long ago to fix the wastegate rattle!! __________________ -'07 335i coupe (build date 02/2007) - Space Grey/Black Dakota/Dark Burl - 6MT/ZPP/ZSP/Nav/CA/Heated Seats. Acquired in Munich 3/2007 via European Delivery. 16 years and almost 220k miles of pure joy! -'06 911 Carrera S - Black/Black - Full Leather/Sport Chrono/Porsche Sport Exhaust/Nav - 80k miles. Acquired 1/2021. One needy old German car just wasn't enough!
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01-10-2009, 08:09 AM	#2
2e9x's Major 50 Rep 1,137 Posts Drives: 335i ED 7/07 Join Date: Dec 2006 Location: A Sunny Place iTrader: (2)	Probably fuel pump. Any long cranks? Car stock? __________________ 2010 Evo X - silver with a big, stupid wing on the back 2009 VW CC - Black/Black - with a 2011 328i on order to replace it - ED 8/1/11
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01-10-2009, 08:13 AM	#3
eunosracr Colonel 159 Rep 2,231 Posts Drives: a car Join Date: Oct 2007 Location: here iTrader: (4)	I'd bet it's the HPFP.
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01-10-2009, 08:17 AM	#4
enrita Major General 161 Rep 7,377 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden iTrader: (0)	i wonder if all hpfp issues are related to poor gas quality in the US. I have never heard of this problem in sweden. tried to search on different forums here locally and nothing came up. __________________ 07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
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01-10-2009, 08:31 AM	#5
sflgator Major General 148 Rep 5,389 Posts Drives: '09 MB C63 AMG & '08 MB GL450 Join Date: Oct 2006 Location: U.S. iTrader: (1)	Sounds like HPFP. Bring it to your dealer. __________________ \|2009 RENNtech MB C63 AMG \| Black/Black Leather/Black Maple \| Premium II \| MultiMedia \| iPod \| \| TeleAid \| Charcoal Filter Delete \| BMC High-Flow Air Filters \| High-Flow Secondary Cats \| Clear Side Markers \|
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01-10-2009, 08:44 AM	#6
RiXst3r 274 Rep 6,510 Posts Drives: M235i Join Date: Sep 2006 Location: Ohio iTrader: (14)	HPFP...
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01-10-2009, 11:54 AM	#8
Hit_Apex Riding the knock sensor 2371 Rep 1,591 Posts Drives: 21 X5MC \| 23 M4CSL Join Date: May 2008 Location: PCH iTrader: (1) Garage List 2021 BMW X5MC [0.00]	Try driving it again. The limp mode (what you call shuddering) will reset and may drive fine. If it limps immediately again then you need to have it diagnosed. __________________
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12-17-2011, 02:59 AM	#9
335icandy Lieutenant 49 Rep 503 Posts Drives: 2016 328dX Msport Estoril Blue Join Date: Nov 2011 Location: Toronto, ON, CANADA iTrader: (0)	What was the result of the diagnosis?
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