P29F3 code plus bunch of misfiring with it..

TrAcK TRaP · 03-09-2014, 11:23 PM

Hey guys I need your help.. I just got stupid P29F3 code (LPFP sensor) and misfiring almost every single cyl.. Every time I go WOT injectors shut down I guess at 4K+ rpm I loose power and service engine light comes out. And after little while turns back to normal. (Yes I searched here) But I changed my spark plugs 15K miles ago (car has 47K miles) My question is if I only replace the LPFP sensor these wont happen again? Should I replace my spark plugs also due to misfiring? If you guys can help me I'd appreciated.

TrAcK TRaP · 03-09-2014, 11:29 PM

Btw I am running Cobb st2+ if that helps..

TrAcK TRaP · 03-09-2014, 11:59 PM

Any help for me?

bimmerboi19 · 03-10-2014, 12:44 AM

Pmd!

nysour335i · 03-10-2014, 11:02 AM

Quote:

Originally Posted by N54CherryHill

Hey guys I need your help.. I just got stupid P29F3 code (LPFP sensor) and misfiring almost every single cyl.. Every time I go WOT injectors shut down I guess at 4K+ rpm I loose power and service engine light comes out. And after little while turns back to normal. (Yes I searched here) But I changed my spark plugs 15K miles ago (car has 47K miles) My question is if I only replace the LPFP sensor these wont happen again? Should I replace my spark plugs also due to misfiring? If you guys can help me I'd appreciated.

has the car ever been carbon blasted?? coils ever been changed??

TrAcK TRaP · 03-10-2014, 11:18 AM

Quote:

Originally Posted by nysour335i

has the car ever been carbon blasted?? coils ever been changed??

no not really original coils and no carbon blasted done yet

TrAcK TRaP · 03-10-2014, 11:30 AM

Quote:

Originally Posted by N54CherryHill

no not really original coils and no carbon blasted done yet

And I was planing to do carbon blasted on 60K mile and I thought 47K was little early.. Should I do that also? This problem drives me crazy I should've keep my car stock

hemi to e90 · 03-10-2014, 11:58 AM

Quote:

Originally Posted by N54CherryHill

And I was planing to do carbon blasted on 60K mile and I thought 47K was little early.. Should I do that also? This problem drives me crazy I should've keep my car stock

i did it at 60k and you really shouldn't wait that long.

robertsawh82 · 03-10-2014, 02:37 PM

In my opinion, you have to change LPFS (Sensor)... It's wise to do it when you do the walnut blast, because in order to access it you need to remove the intake manifold... http://www.e90post.com/forums/showthread.php?t=763958

nysour335i · 03-10-2014, 05:44 PM

Why dont u come by and well hook up the computer see how the pumps running and do the carbon blasting and coils for you.

TrAcK TRaP · 03-10-2014, 07:06 PM

Thanks to all of you guys I called VAC and getting ready to do LPFP sensor, plugs and carbon blasting...

nysour335i · 03-10-2014, 10:15 PM

Quote:

Originally Posted by N54CherryHill

Thanks to all of you guys I called VAC and getting ready to do LPFP sensor, plugs and carbon blasting...

Let me know how much they are going to charge you

TrAcK TRaP · 03-12-2014, 11:47 PM

Quote:

Originally Posted by nysour335i

Let me know how much they are going to charge you

Pm'd...

TrAcK TRaP · 03-12-2014, 11:48 PM

Quote:

Originally Posted by robertsawh82

In my opinion, you have to change LPFS (Sensor)... It's wise to do it when you do the walnut blast, because in order to access it you need to remove the intake manifold... http://www.e90post.com/forums/showthread.php?t=763958

thanks for the help bro..

robertsawh82 · 03-13-2014, 12:25 AM

Quote:

Originally Posted by N54CherryHill

thanks for the help bro..

Your welcome bro! I hope everything works out well!

03-09-2014, 11:23 PM	#1
TrAcK TRaP bOrN To DiE 414 Rep 1,736 Posts Drives: 2011 E92 M3 ZCP Join Date: Apr 2013 Location: South Jersey iTrader: (0)	P29F3 code plus bunch of misfiring with it.. Hey guys I need your help.. I just got stupid P29F3 code (LPFP sensor) and misfiring almost every single cyl.. Every time I go WOT injectors shut down I guess at 4K+ rpm I loose power and service engine light comes out. And after little while turns back to normal. (Yes I searched here) But I changed my spark plugs 15K miles ago (car has 47K miles) My question is if I only replace the LPFP sensor these wont happen again? Should I replace my spark plugs also due to misfiring? If you guys can help me I'd appreciated.
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03-09-2014, 11:29 PM	#2
TrAcK TRaP bOrN To DiE 414 Rep 1,736 Posts Drives: 2011 E92 M3 ZCP Join Date: Apr 2013 Location: South Jersey iTrader: (0)	Btw I am running Cobb st2+ if that helps..
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03-09-2014, 11:59 PM	#3
TrAcK TRaP bOrN To DiE 414 Rep 1,736 Posts Drives: 2011 E92 M3 ZCP Join Date: Apr 2013 Location: South Jersey iTrader: (0)	Any help for me?
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03-10-2014, 12:44 AM	#4
bimmerboi19 Private First Class 5 Rep 121 Posts Drives: Alpine White 335i Join Date: Aug 2011 Location: Dirty Jerz iTrader: (3)	Pmd!
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03-10-2014, 02:37 PM	#9
robertsawh82 New Member 11 Rep 9 Posts Drives: Montego Blue 335i AT Join Date: Mar 2013 Location: Bayonne, NJ iTrader: (0) Garage List 2007 BMW 335i [10.00]	In my opinion, you have to change LPFS (Sensor)... It's wise to do it when you do the walnut blast, because in order to access it you need to remove the intake manifold... http://www.e90post.com/forums/showthread.php?t=763958 __________________ Meth, JB4 G4, and DCI's
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03-10-2014, 05:44 PM	#10
nysour335i Banned 17 Rep 128 Posts Drives: 2008 335i coupe Join Date: Dec 2011 Location: Long Island (Suffolk) NY iTrader: (0)	Why dont u come by and well hook up the computer see how the pumps running and do the carbon blasting and coils for you.
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03-10-2014, 07:06 PM	#11
TrAcK TRaP bOrN To DiE 414 Rep 1,736 Posts Drives: 2011 E92 M3 ZCP Join Date: Apr 2013 Location: South Jersey iTrader: (0)	Thanks to all of you guys I called VAC and getting ready to do LPFP sensor, plugs and carbon blasting...
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