Limp Mode Help!

Mikey335 · 10-31-2012, 06:14 PM

This is the second time it's happened to me so far, once today and the other time about 6months ago.

I was getting on the Highway in manual mode, Giving it a little bit of gas not punching it or anything and my car just dropped into limp mode. I shut the car off and turned it back on and it was fine. My jb4 is set to autoclear codes.

Anyone know what possibly that could be?

CHECKERED · 10-31-2012, 07:07 PM

Any codes other then limp mode?
What’s the oil temp?
Could be an overboosting issue where the wastegate doesn’t open

Mikey335 · 10-31-2012, 07:16 PM

My jb4 Autoclears the codes, unless I can pull them up some other way

Car was up to temp maybe 210?

I'm running jb4 Map 5, DCI is all

orionredwing · 10-31-2012, 07:16 PM

Sorry, too many possibilities. Turn off auto code clearing, trigger limp again, and then post your codes. We'll be glad to help.

Otherwise, not much to go on....

Mikey335 · 10-31-2012, 07:23 PM

Well it's hard to get it to happen again, It's happened 2 times in 6months.

Mikey335 · 10-31-2012, 07:32 PM

So I plugged my laptop in just to check for kicks and it said...

29F2 Fuel High Pressure system

I've never had any rough starts or heard anything about this before.

If I take it in to the dealer and I shut the jb4 off, will it clear the code?

LQQKOUT · 10-31-2012, 08:21 PM

I had the same thing happen because of bad gas.

orionredwing · 11-01-2012, 04:31 PM

Quote:

Originally Posted by Mikey335

So I plugged my laptop in just to check for kicks and it said...

29F2 Fuel High Pressure system

I've never had any rough starts or heard anything about this before.

If I take it in to the dealer and I shut the jb4 off, will it clear the code?

There you go. Maybe the HPFP. Remove your JB4 and get it checked out under the 10yr/120K mile hpfp warranty.

Did you get the recall done?

10-31-2012, 06:14 PM	#1
Mikey335 Private 5 Rep 89 Posts Drives: 2008 335i e90 Join Date: Feb 2012 Location: NW Ohio iTrader: (0)	Limp Mode Help! This is the second time it's happened to me so far, once today and the other time about 6months ago. I was getting on the Highway in manual mode, Giving it a little bit of gas not punching it or anything and my car just dropped into limp mode. I shut the car off and turned it back on and it was fine. My jb4 is set to autoclear codes. Anyone know what possibly that could be?
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10-31-2012, 07:07 PM	#2
CHECKERED ex deus machina 131 Rep 968 Posts Drives: G30, F15, Audi S4 Join Date: Oct 2012 Location: Southern NH iTrader: (12)	Any codes other then limp mode? What’s the oil temp? Could be an overboosting issue where the wastegate doesn’t open __________________ Daily: G30 M550i, Bluestone, JB4, 1 step colder plugs, 6WB retrofit Winter Beast: Audi S4 4.2L V8, Supercharger, brakes, suspension & exhaust mods Wifes': F15 M50d clone, DUDMD tune, WMI, MPBK Gone: E92 335i N54 468rwtq
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10-31-2012, 07:16 PM	#3
Mikey335 Private 5 Rep 89 Posts Drives: 2008 335i e90 Join Date: Feb 2012 Location: NW Ohio iTrader: (0)	My jb4 Autoclears the codes, unless I can pull them up some other way Car was up to temp maybe 210? I'm running jb4 Map 5, DCI is all
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10-31-2012, 07:16 PM	#4
orionredwing Captain 111 Rep 728 Posts Drives: 335i Sedan, 135i Coupe Join Date: Dec 2006 Location: San Jose iTrader: (0) Garage List 2007 335i [10.00]	Sorry, too many possibilities. Turn off auto code clearing, trigger limp again, and then post your codes. We'll be glad to help. Otherwise, not much to go on.... __________________ PROcede \| AMS FMIC \| AR Catless DPs \| AR Oil Cooler \| BMS DCI Wavetrac LSD \| KW V3 w/ Swift Springs \| M3 Front Suspension
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10-31-2012, 07:23 PM	#5
Mikey335 Private 5 Rep 89 Posts Drives: 2008 335i e90 Join Date: Feb 2012 Location: NW Ohio iTrader: (0)	Well it's hard to get it to happen again, It's happened 2 times in 6months.
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10-31-2012, 07:32 PM	#6
Mikey335 Private 5 Rep 89 Posts Drives: 2008 335i e90 Join Date: Feb 2012 Location: NW Ohio iTrader: (0)	So I plugged my laptop in just to check for kicks and it said... 29F2 Fuel High Pressure system I've never had any rough starts or heard anything about this before. If I take it in to the dealer and I shut the jb4 off, will it clear the code?
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10-31-2012, 08:21 PM	#7
LQQKOUT Lieutenant 104 Rep 416 Posts Drives: 335XI Join Date: Jul 2011 Location: United States iTrader: (4)	I had the same thing happen because of bad gas.
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