Yellow half engine light came on tonight...new jb4 user

335why · 03-29-2011, 07:08 AM

On the way home did a quick little run to 120...afterwards the yellow half engine light came on...did 2-6 to remove them...engine light is gone...are the codes still there? Nothing strange seemed to happen though during the pull..suggestions?

335why · 03-29-2011, 07:31 AM

Forgot to mention, the car was only 22 miles to empty..dont know of that has anything to do with it....???

Anyways as far as codes go..when I did mode 1-1 it blinks twice, then blinks twice again, then goes to 30 and then 10 on the speedo, then to zero..

enrita · 03-29-2011, 08:07 AM

you should actually read them out before removing them otherwise its impossible to diagnose why you went into limp mode.

drew4392 · 03-29-2011, 09:26 AM

Plus, "tuner" codes dont necessarily show as "check engine" lights. They typically remain hidden... Hence their purpose. So ya, important to know what went wrong to diagnose properly.

Mike@N54Tuning.com · 03-29-2011, 09:44 AM

Without a code its mere speculation! Always ready the code if something happens.

Mike

Drex335iLov · 03-29-2011, 10:25 AM

That sounds like a symptom of the HPFP failing if my memory serves me correctly. You may want to see if your car has a recall on your HPFP as just about all of the N54s do.

335why · 03-29-2011, 04:11 PM

Quote:

Originally Posted by Mike@N54Tuning.com

Without a code its mere speculation! Always ready the code if something happens.

Mike

Ok I went and did a few pulls earlier and it has not done it again...if it does happend I need to hook the computer up correct?

markham335i · 03-29-2011, 04:16 PM

Quote:

Originally Posted by 335why

Ok I went and did a few pulls earlier and it has not done it again...if it does happend I need to hook the computer up correct?

yup

bigdog34uz · 03-29-2011, 04:16 PM

code 3100 normally goes hand and hand with 2a87. If that is the case then you need to replace your Vanos. Very easy DIY and not that expensive. I had that for awhile and the car felt sluggish.

You Vanos may be getting jammed.

335why · 03-29-2011, 04:26 PM

Hmm, ok. How much is "not very expensive" I just did a quick read about the vanos and heard that a lot of the time it's down low torque that's affected and the car feels "jerky" .. Actually felt that a bit earlier... Vanos can only be purchased thru BMW?

Mike@N54Tuning.com · 03-29-2011, 06:00 PM

Quote:

Originally Posted by 335why

Ok I went and did a few pulls earlier and it has not done it again...if it does happend I need to hook the computer up correct?

The code will be saved so you can read it when you get home.

Mike

Sparky66 · 03-30-2011, 02:20 AM

You might be interested in this DIY if in fact it is a Vanos issue....http://www.e90post.com/forums/showthread.php?t=486201

335why · 03-30-2011, 03:13 AM

I put the car back to stock and ONLY on the default mode it surges when I get on it...like it's cutting in and out of power.. Not a hugeeee difference maybe looes like 15 HP for a split second then gains power back..like I said it ONLY does this on stock map 0....the car doesnt seem to have as much power on map 5 though...it WOULD spin 2nd at like 35-40mph flooring it 2nd...now it just takes off..still pulls but not like before...

Vanos??

SuperBmw · 03-30-2011, 03:22 AM

I had the same light as you with a reallllly empty tank of gas once. Been about 4 months since and no issues.

bigdog34uz · 03-30-2011, 10:32 AM

Quote:

Originally Posted by 335why

Hmm, ok. How much is "not very expensive" I just did a quick read about the vanos and heard that a lot of the time it's down low torque that's affected and the car feels "jerky" .. Actually felt that a bit earlier... Vanos can only be purchased thru BMW?

The part is only $120. Someone posted the link above. www.getbmwparts.com so far has the best prices that i have seen.

kjrulz · 03-30-2011, 10:35 AM

still sounds like hpfp to me. typically that is what is the issue after a tune install because of the boost increase.

SuperDan · 03-30-2011, 10:55 AM

HPFP

Mike@N54Tuning.com · 03-30-2011, 01:08 PM

Quote:

Originally Posted by 335why

I put the car back to stock and ONLY on the default mode it surges when I get on it...like it's cutting in and out of power.. Not a hugeeee difference maybe looes like 15 HP for a split second then gains power back..like I said it ONLY does this on stock map 0....the car doesnt seem to have as much power on map 5 though...it WOULD spin 2nd at like 35-40mph flooring it 2nd...now it just takes off..still pulls but not like before...

Vanos??

You're wasting your time guessing. Read the code. If it's gone already trigger it again and then read it.

Mike

crazyazzdo0d · 05-19-2012, 10:04 AM

I have had similar problems in WOT and the car just goes into half engine mode, I have had the fuel pump changed during recall and the ecu reprogramed also to recall and I can still trigger the half engine. Think this could be a Vanos Solenoid issue, any suggestions?

rmw04c · 05-19-2012, 07:18 PM

Read codes....only way to tell. When my HPFP went on my 07 I had no CELs prior to it going. I was just driving and boom, no power lol.

03-29-2011, 07:08 AM	#1
335why Private First Class 16 Rep 185 Posts Drives: 335i Join Date: Mar 2011 Location: In the garage confused as hell..... iTrader: (1)	Yellow half engine light came on tonight...new jb4 user On the way home did a quick little run to 120...afterwards the yellow half engine light came on...did 2-6 to remove them...engine light is gone...are the codes still there? Nothing strange seemed to happen though during the pull..suggestions?
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03-29-2011, 07:31 AM	#2
335why Private First Class 16 Rep 185 Posts Drives: 335i Join Date: Mar 2011 Location: In the garage confused as hell..... iTrader: (1)	Forgot to mention, the car was only 22 miles to empty..dont know of that has anything to do with it....??? Anyways as far as codes go..when I did mode 1-1 it blinks twice, then blinks twice again, then goes to 30 and then 10 on the speedo, then to zero.. Last edited by 335why; 03-29-2011 at 07:48 AM..
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03-29-2011, 08:07 AM	#3
enrita Major General 161 Rep 7,377 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden iTrader: (0)	you should actually read them out before removing them otherwise its impossible to diagnose why you went into limp mode. __________________ 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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03-29-2011, 09:26 AM	#4
drew4392 Second Lieutenant 51 Rep 238 Posts Drives: '07 335i Sedan Join Date: May 2010 Location: Los Angeles iTrader: (1)	Plus, "tuner" codes dont necessarily show as "check engine" lights. They typically remain hidden... Hence their purpose. So ya, important to know what went wrong to diagnose properly.
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03-29-2011, 09:44 AM	#5
Mike@N54Tuning.com Joint Chiefs of Staff 5044 Rep 116,174 Posts Drives: 2007 335i, 2015 M3 Join Date: Dec 2008 Location: N54tuning.com iTrader: (89)	Without a code its mere speculation! Always ready the code if something happens. Mike
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03-29-2011, 10:25 AM	#6
Drex335iLov New Member 5 Rep 24 Posts Drives: 2008 335i Join Date: Mar 2011 Location: Atlanta, GA iTrader: (0)	That sounds like a symptom of the HPFP failing if my memory serves me correctly. You may want to see if your car has a recall on your HPFP as just about all of the N54s do.
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03-29-2011, 04:16 PM	#9
bigdog34uz Major 92 Rep 1,282 Posts Drives: 2007 e90 335i Join Date: Jun 2010 Location: VA iTrader: (3) Garage List 2012 bmw n55 335i [0.00]	code 3100 normally goes hand and hand with 2a87. If that is the case then you need to replace your Vanos. Very easy DIY and not that expensive. I had that for awhile and the car felt sluggish. You Vanos may be getting jammed. __________________ 13.01 @ 107.6mph Mods: OETuning........ 13.00 @ 108.89 JB4 Times
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03-29-2011, 04:26 PM	#10
335why Private First Class 16 Rep 185 Posts Drives: 335i Join Date: Mar 2011 Location: In the garage confused as hell..... iTrader: (1)	Hmm, ok. How much is "not very expensive" I just did a quick read about the vanos and heard that a lot of the time it's down low torque that's affected and the car feels "jerky" .. Actually felt that a bit earlier... Vanos can only be purchased thru BMW?
	Appreciate 0 Quote

03-30-2011, 02:20 AM	#12
Sparky66 Major 60 Rep 1,230 Posts Drives: 335 E92 Coupe. Jet Black. Join Date: Feb 2007 Location: Sydney, Australia iTrader: (0)	You might be interested in this DIY if in fact it is a Vanos issue....http://www.e90post.com/forums/showthread.php?t=486201 __________________ Sticky is an Idiot
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03-30-2011, 03:13 AM	#13
335why Private First Class 16 Rep 185 Posts Drives: 335i Join Date: Mar 2011 Location: In the garage confused as hell..... iTrader: (1)	I put the car back to stock and ONLY on the default mode it surges when I get on it...like it's cutting in and out of power.. Not a hugeeee difference maybe looes like 15 HP for a split second then gains power back..like I said it ONLY does this on stock map 0....the car doesnt seem to have as much power on map 5 though...it WOULD spin 2nd at like 35-40mph flooring it 2nd...now it just takes off..still pulls but not like before... Vanos??
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03-30-2011, 03:22 AM	#14
SuperBmw Lieutenant 71 Rep 511 Posts Drives: 07 E92 335i Join Date: Dec 2010 Location: Toronto iTrader: (5)	I had the same light as you with a reallllly empty tank of gas once. Been about 4 months since and no issues.
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03-30-2011, 10:35 AM	#16
kjrulz Mastermind 71 Rep 1,360 Posts Drives: girls krazy Join Date: Jan 2009 Location: your mother iTrader: (5)	still sounds like hpfp to me. typically that is what is the issue after a tune install because of the boost increase.
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03-30-2011, 10:55 AM	#17
SuperDan Banned 0 Rep 96 Posts Drives: '11 BMW 335is Join Date: Mar 2011 Location: Atlanta, Georgia iTrader: (0)	HPFP
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05-19-2012, 10:04 AM	#19
crazyazzdo0d New Member 0 Rep 9 Posts Drives: 2007 335i Sedan (e90) Join Date: Mar 2012 Location: Fort Smith, AR iTrader: (0)	I have had similar problems in WOT and the car just goes into half engine mode, I have had the fuel pump changed during recall and the ecu reprogramed also to recall and I can still trigger the half engine. Think this could be a Vanos Solenoid issue, any suggestions?
	Appreciate 0 Quote

05-19-2012, 07:18 PM	#20
rmw04c Jewbacca 10 Rep 219 Posts Drives: 2011 SGM 335is Join Date: Apr 2009 Location: Cloud 9 iTrader: (2)	Read codes....only way to tell. When my HPFP went on my 07 I had no CELs prior to it going. I was just driving and boom, no power lol. __________________ 2007 E92 335i - Retired 2011 E92 6MT 335is - JB4, Stett CP, Synapse BOV, Wagner FMIC, BMS OCC, CDV mod, AFE DCI, Cyba Scoops, BMS Clutch Stop, P3Cars v2.1 vent gauge, LED side markers.
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