Strange limp mode. Any ideas?

edo · 05-23-2009, 10:02 AM

Hi,

I was cleaning my car's interior today. After ~30 minutes I noticed the car starting to shake a bit and after several seconds it went into a limp mode.

Shut it of, started again and it went into a limp mode after 5 seconds again. Then I took my c-reader and read the codes - misfire in cylinders 5 and 6, multiple missfire occasions (or smth like that). Cleared the error codes, started the car and everything was fine, didn't go into a limp mode.

Any ideas what could be the reason? It's the first time my car goes into a limp mode. HPFP? O2 sims (set at 80%, haven't had any problems)? Anything else?

edo · 05-23-2009, 10:10 AM

Well, everything was just fine before. That is why I highly doubt a tune was the reason...

Ilma · 05-23-2009, 10:33 AM

It's not clear in your post....but I presume your car was idling for 30 minutes as you were cleaning it and then went into limp mode from an idle?

TheTwinz · 05-23-2009, 01:14 PM

why would you let your car idle for 30 minutes while cleaning the interior?... or maybe it was an earthquake that caused your car to shake.. haha.. jk.

edo · 05-23-2009, 01:52 PM

Quote:

Originally Posted by TheTwinz

why would you let your car idle for 30 minutes while cleaning the interior?...

Because i wanted to.

Back to topic - any ideas?

**335i** · 05-23-2009, 02:00 PM

Quote:

Originally Posted by TheTwinz

why would you let your car idle for 30 minutes while cleaning the interior?... or maybe it was an earthquake that caused your car to shake.. haha.. jk.

+1 very strange, idle for 30 mins

Vudoo4u2 · 05-23-2009, 02:05 PM

honestly, I had a similar event a few weeks back.

I started my car and then had a call come in, and I was on the call for ~20 mins and got the limp mode. I got the limp mode when I hit the map switcher on my keychain and turned off of valet mode (took about 1 min after I turned it on). I'm betting its because the tune starts to advance timing under 0 load, and your spark plugs are probably not in top form so you got a misfire and limp.

Swap your sparkplugs

edo · 05-23-2009, 05:13 PM

Got a second limp mode today, this time when driving.

Quote:

Originally Posted by Vudoo4u2

Swap your sparkplugs

Yep, I'm 90% sure that I got the limp modes because of my spark plugs. Will change them next week.

My car runs great, btw.

Mote · 05-23-2009, 05:18 PM

Yeah i'm gonna have to say swap your plugs and recreate the problem. If the other cylinder misfires...you know it's your plugs. I'm positive your plugs are going. Good luck!

05-23-2009, 10:02 AM	#1
edo ****** 56 Rep 886 Posts Drives: E92 335i Join Date: Nov 2008 Location: hell iTrader: (1)	Strange limp mode. Any ideas? Hi, I was cleaning my car's interior today. After ~30 minutes I noticed the car starting to shake a bit and after several seconds it went into a limp mode. Shut it of, started again and it went into a limp mode after 5 seconds again. Then I took my c-reader and read the codes - misfire in cylinders 5 and 6, multiple missfire occasions (or smth like that). Cleared the error codes, started the car and everything was fine, didn't go into a limp mode. Any ideas what could be the reason? It's the first time my car goes into a limp mode. HPFP? O2 sims (set at 80%, haven't had any problems)? Anything else? __________________ Mods: RB turbos, JB4, BMS DCI, Scoops, Forge DVs, ar design catless DPs, Milltek exhaust system, Helix FMIC, Quaife LSD, VK MotorWerks OC Kit, Bilstein B16 PSS10
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05-23-2009, 10:10 AM	#2
edo ****** 56 Rep 886 Posts Drives: E92 335i Join Date: Nov 2008 Location: hell iTrader: (1)	Well, everything was just fine before. That is why I highly doubt a tune was the reason... __________________ Mods: RB turbos, JB4, BMS DCI, Scoops, Forge DVs, ar design catless DPs, Milltek exhaust system, Helix FMIC, Quaife LSD, VK MotorWerks OC Kit, Bilstein B16 PSS10
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05-23-2009, 10:33 AM	#3
Ilma Colonel 200 Rep 2,856 Posts Drives: 2023 M4 Competition Join Date: Nov 2008 Location: Mississauga iTrader: (0)	It's not clear in your post....but I presume your car was idling for 30 minutes as you were cleaning it and then went into limp mode from an idle?
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05-23-2009, 01:14 PM	#4
TheTwinz Second Lieutenant 14 Rep 273 Posts Drives: 300Z Join Date: Feb 2009 Location: 911 iTrader: (0)	why would you let your car idle for 30 minutes while cleaning the interior?... or maybe it was an earthquake that caused your car to shake.. haha.. jk.
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05-23-2009, 02:05 PM	#7
Vudoo4u2 Night Sh1ft 472 Rep 3,079 Posts Drives: F95 X5MC LCI Join Date: Oct 2007 Location: It's bobsled time iTrader: (3) Garage List 2024 BMW X5M Compet ... [0.00]	honestly, I had a similar event a few weeks back. I started my car and then had a call come in, and I was on the call for ~20 mins and got the limp mode. I got the limp mode when I hit the map switcher on my keychain and turned off of valet mode (took about 1 min after I turned it on). I'm betting its because the tune starts to advance timing under 0 load, and your spark plugs are probably not in top form so you got a misfire and limp. Swap your sparkplugs __________________ "Your first 10,000 photographs are your worst.” ― Henri Cartier-Bresson
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05-23-2009, 05:18 PM	#9
Mote Colonel 143 Rep 2,162 Posts Drives: 2008 E92 - 1991 E30 Join Date: Jan 2008 Location: Beverly Hills, CA iTrader: (0)	Yeah i'm gonna have to say swap your plugs and recreate the problem. If the other cylinder misfires...you know it's your plugs. I'm positive your plugs are going. Good luck!
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