Problem going into limp mode during WOT

dozer008 · 03-24-2015, 02:36 PM

Quick question for the tuners. Im having a problem with my car. Im full bolt on stage 2+ aggresive cobb tuned for almost 3 years and never had a problem. My car when going WOT from 4th to 5th gear on the highway goes into limp mode in automatic mode right before the shift. When I switch to paddle shifters or DS mode its fine. I have run logs and get a fuel pump plasibilty. When I restart the car its fine. Any suggestions on what to trouble shoot. This has been going on for months

datbimmer · 03-24-2015, 02:59 PM

Sounds like HPFP

techwhiz · 03-24-2015, 04:06 PM

When did last change plugs?
Throwing any codes?

The1ontop · 03-24-2015, 04:12 PM

Lpfp and or hpfp not being able to keep the flow of fuel under load

dozer008 · 03-27-2015, 01:50 PM

Ok Update. I have replaced the sparkplugs the vanos sylonoids and valve cover gaskets. Reset all my adaptations. It still happened last night shifting wife open from 5th to 6th gear. Only error im getting is fuel pump plausibilty. How could I check between hpfp and lpfp????

dbworld4k · 03-27-2015, 01:55 PM

No other codes? That's extremely odd.

mojobmw_e90 · 03-27-2015, 01:57 PM

For lpfp check your fuel trims. If they are under 60 during wot might be time to get a upgrade.

For hpfp are you getting long cranks and what happens if you start the car and turn it off, and back on 3x in a row. I've heard a bad hpfp during this process will have long starts after 2x

dozer008 · 03-27-2015, 02:01 PM

starts are fairly normal. Havent noticed them dragging on. I can get on it WOT from 1st to 2nd to 3rd no problem. Its around a roll from 80 it does this. I have narrowed it down to the pump but not sure which one. I need to see what Fuel pump plausibilty referes too which pump.

nckwrnr · 03-27-2015, 02:04 PM

My car does the same thing doesn't like full throttle up shifts in normal D mode. I don't think that is recommended anyway much harder on the transmission with the slower shift. I also run a cobb stage 2+.

mike@x-ph.com · 03-29-2015, 09:44 PM

Could be a million thing. post a few logs to get better help

03-24-2015, 02:36 PM	#1
dozer008 First Lieutenant 26 Rep 298 Posts Drives: 09' BMW 335i Join Date: Jun 2012 Location: Houston iTrader: (5)	Problem going into limp mode during WOT Quick question for the tuners. Im having a problem with my car. Im full bolt on stage 2+ aggresive cobb tuned for almost 3 years and never had a problem. My car when going WOT from 4th to 5th gear on the highway goes into limp mode in automatic mode right before the shift. When I switch to paddle shifters or DS mode its fine. I have run logs and get a fuel pump plasibilty. When I restart the car its fine. Any suggestions on what to trouble shoot. This has been going on for months __________________ Cobb/Active Autowerke/ VRSF/ BMS
	Appreciate 0 Tweet Quote

03-24-2015, 02:59 PM	#2
datbimmer Wastegate Rattle 113 Rep 897 Posts Drives: 335i m6t nav sport Join Date: Dec 2013 Location: Canada iTrader: (0)	Sounds like HPFP
	Appreciate 0 Quote

03-24-2015, 04:06 PM	#3
techwhiz Colonel 453 Rep 2,973 Posts Drives: e90 335i Sedan - Arctic Join Date: Feb 2012 Location: Bay Area, Ca iTrader: (4)	When did last change plugs? Throwing any codes? __________________ Arctic Metallic\CF Splitters, Spoiler, Mirror Covers\LED Tails\LSD\Tinted\Coded\Apex Square SM10-19"\LED Angel Eyes\Gloss Black Grill\Integrated V1 & Galaxy Tab\M-Performance Brakes\Cobb Tuned\xHP Flash\Resonator Removed and -> is your friend.
	Appreciate 0 Quote

03-24-2015, 04:12 PM	#4
The1ontop Second Lieutenant 11 Rep 228 Posts Drives: 2007 335i E92 Join Date: Nov 2013 Location: Maryland iTrader: (0)	Lpfp and or hpfp not being able to keep the flow of fuel under load
	Appreciate 0 Quote

03-27-2015, 01:50 PM	#5
dozer008 First Lieutenant 26 Rep 298 Posts Drives: 09' BMW 335i Join Date: Jun 2012 Location: Houston iTrader: (5)	Ok Update. I have replaced the sparkplugs the vanos sylonoids and valve cover gaskets. Reset all my adaptations. It still happened last night shifting wife open from 5th to 6th gear. Only error im getting is fuel pump plausibilty. How could I check between hpfp and lpfp???? __________________ Cobb/Active Autowerke/ VRSF/ BMS
	Appreciate 0 Quote

03-27-2015, 01:55 PM	#6
dbworld4k Banned 583 Rep 2,233 Posts Drives: '12 M3 Join Date: Mar 2008 Location: YYZ iTrader: (5) Garage List 2002 BMW M5 [10.00] 2009 BMW 335i [10.00]	No other codes? That's extremely odd.
	Appreciate 0 Quote

03-27-2015, 01:57 PM	#7
mojobmw_e90 Major 380 Rep 1,497 Posts Drives: 2014 E63S Join Date: Oct 2014 Location: Chicago IL iTrader: (3)	For lpfp check your fuel trims. If they are under 60 during wot might be time to get a upgrade. For hpfp are you getting long cranks and what happens if you start the car and turn it off, and back on 3x in a row. I've heard a bad hpfp during this process will have long starts after 2x
	Appreciate 0 Quote

03-27-2015, 02:01 PM	#8
dozer008 First Lieutenant 26 Rep 298 Posts Drives: 09' BMW 335i Join Date: Jun 2012 Location: Houston iTrader: (5)	starts are fairly normal. Havent noticed them dragging on. I can get on it WOT from 1st to 2nd to 3rd no problem. Its around a roll from 80 it does this. I have narrowed it down to the pump but not sure which one. I need to see what Fuel pump plausibilty referes too which pump. __________________ Cobb/Active Autowerke/ VRSF/ BMS
	Appreciate 0 Quote

03-27-2015, 02:04 PM	#9
nckwrnr Private 12 Rep 58 Posts Drives: 07 335i Join Date: Dec 2014 Location: Kirkland, WA iTrader: (0)	My car does the same thing doesn't like full throttle up shifts in normal D mode. I don't think that is recommended anyway much harder on the transmission with the slower shift. I also run a cobb stage 2+.
	Appreciate 0 Quote

03-29-2015, 09:44 PM	#10
mike@x-ph.com BimmerPost Supporting Vendor 24174 Rep 190,750 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	Could be a million thing. post a few logs to get better help __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
	Appreciate 0 Quote