I need help guys:( - BMW 3-Series (E90 E92) Forum

jake89714 · 03-31-2010, 04:22 PM

I was driving on the highway yesterday and I noticed one problem... I was pressing gas from 75 to 100mph and turbo seems to go on and off... I have boost gauage and the boost was going up and down.. it wasnt getting full boost. also SES came on..

I have proceed v3, dp, and intake....

Please help, Dont have factory warranty but have CPO warranty...

TurboSid · 03-31-2010, 04:24 PM

sdo u have anything to check what codes the car is throwing?

sounds like spark plugs/hpfp.

joec500 · 03-31-2010, 04:25 PM

you need to post the codes that were coming up...sounds like either some fuel cut or possibly wastegate turbo issues or even a boost leak, but hard to say until you post the trouble codes.

jake89714 · 03-31-2010, 04:37 PM

but why only around 80-100mph from 5th gear? Its wierd...

TurboSid · 03-31-2010, 05:19 PM

mine was doing the same, its going to get worse. I changed the spark plugs b/c everyone told me to try that first, but didn't help. So now im moving on to changing out the hpfp.

the other option is to take off all the parts and take it to the dealer.

joec500 · 03-31-2010, 05:29 PM

we can guess forever without the codes.

Jon335iFL · 03-31-2010, 05:50 PM

take the proceed out and take it to the dealer. If they try to blame it on the downpipes or intake tell them to go screw themselves and go to a different dealer. or do what most people do with mods and hook up you SA and Mechanic with $50 bucks each and call it a night.

v4voodoo · 03-31-2010, 07:19 PM

It probably is your HPFP, but codes would be nice.
Had the same symptoms before I finally got it replaced today. It'll probably happen in 6th gear too, it's just a bit sporadic and related to putting some load on the engine.
Dealer never said anything about the intake, but I am not sure about DPs. Definitely take the proceed out (and drive it around for a week so you have codes) before you take it in. The car will probably run better without the proceed putting extra load on the failing HPFP too.

cotmfk · 03-31-2010, 07:20 PM

Codes will be definitive, but maybe spark plugs, injectors, hpfp? `

03-31-2010, 04:22 PM	#1
jake89714 First Lieutenant Drives: 2007 335i coupe Join Date: Sep 2009 Location: NOrthern VA Posts: 393 iTrader: (1)	I need help guys:( I was driving on the highway yesterday and I noticed one problem... I was pressing gas from 75 to 100mph and turbo seems to go on and off... I have boost gauage and the boost was going up and down.. it wasnt getting full boost. also SES came on.. I have proceed v3, dp, and intake.... Please help, Dont have factory warranty but have CPO warranty...
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03-31-2010, 04:24 PM	#2
TurboSid Lieutenant Colonel Drives: 2011 AW 335is Coupe DCT Join Date: Apr 2008 Location: Florida Posts: 1,831 iTrader: (3) Garage List 2008 335i [0.00]	sdo u have anything to check what codes the car is throwing? sounds like spark plugs/hpfp. __________________

03-31-2010, 05:19 PM	#5
TurboSid Lieutenant Colonel Drives: 2011 AW 335is Coupe DCT Join Date: Apr 2008 Location: Florida Posts: 1,831 iTrader: (3) Garage List 2008 335i [0.00]	mine was doing the same, its going to get worse. I changed the spark plugs b/c everyone told me to try that first, but didn't help. So now im moving on to changing out the hpfp. the other option is to take off all the parts and take it to the dealer. __________________

03-31-2010, 05:50 PM	#7
Jon335iFL Brigadier General Drives: This-----------> Join Date: Feb 2009 Location: Jrz :) Posts: 4,813 iTrader: (14)	take the proceed out and take it to the dealer. If they try to blame it on the downpipes or intake tell them to go screw themselves and go to a different dealer. or do what most people do with mods and hook up you SA and Mechanic with $50 bucks each and call it a night. __________________ .

03-31-2010, 07:20 PM	#9
cotmfk Brigadier General Drives: 2007 335i Join Date: Mar 2009 Location: DC, MD, VA Posts: 3,166 iTrader: (11)	Codes will be definitive, but maybe spark plugs, injectors, hpfp? ` __________________

03-31-2010, 04:25 PM	#3
joec500 Colonel Drives: it has 4 wheels Join Date: Jul 2008 Location: San Francisco Posts: 2,710 iTrader: (10)	you need to post the codes that were coming up...sounds like either some fuel cut or possibly wastegate turbo issues or even a boost leak, but hard to say until you post the trouble codes.

03-31-2010, 04:37 PM	#4
jake89714 First Lieutenant Drives: 2007 335i coupe Join Date: Sep 2009 Location: NOrthern VA Posts: 393 iTrader: (1)	but why only around 80-100mph from 5th gear? Its wierd...

03-31-2010, 05:29 PM	#6
joec500 Colonel Drives: it has 4 wheels Join Date: Jul 2008 Location: San Francisco Posts: 2,710 iTrader: (10)	we can guess forever without the codes.

03-31-2010, 07:19 PM	#8
v4voodoo Private Drives: Blue 07 335i Coupe Join Date: Mar 2010 Location: WA Posts: 94 iTrader: (0)	It probably is your HPFP, but codes would be nice. Had the same symptoms before I finally got it replaced today. It'll probably happen in 6th gear too, it's just a bit sporadic and related to putting some load on the engine. Dealer never said anything about the intake, but I am not sure about DPs. Definitely take the proceed out (and drive it around for a week so you have codes) before you take it in. The car will probably run better without the proceed putting extra load on the failing HPFP too.

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