Low boost 30ff code need some help - BMW 3-Series (E90 E92) Forum

335iPaul27 · 04-25-2013, 02:46 PM

Hi , couple weeks ago i got half engine light come on lost some boost etc, check the codes and it was low boost pressure i cleared it and it went away for a bit , i done some research on here and replaced the 2 vacuum hoses where the oil filter housing is, my old ones were in pretty poor condition. Ive checked the 2x canisters all pipes are fitted on ok and in good condition, Now the weather is warmer im getting the code pretty much everyday tends to be when the engine is hot! before the light comes on the boost is ok. Ive also pulled the brake vacuum hose off and it hisses with air.

One thing to note ive got the dreaded actuator rattle but its not too bad but i dont know how long its been like this as ive not long brought the car ,does this rattle slowly over time damage the wastegates internally ?

if anyone can help that would be great! or if anyone knows of some other vacuum pipes that fail .

zltm089 · 04-25-2013, 02:53 PM

Diverter valves maybe?

but could be actuators too..

When i got the 30ff codes, my actuators were fcuked ...

335iPaul27 · 04-25-2013, 03:20 PM

Im hoping its not the actuators , i had it on the dyno couple weeks ago and it made good power ! so not sure what too think now! can the actuators be brought separately??

Sparky68 · 04-25-2013, 03:22 PM

Boost solenoids? If so they are about £80 each or thereabouts.

335iPaul27 · 04-25-2013, 03:34 PM

Quote:

Originally Posted by Sparky68

Boost solenoids? If so they are about £80 each or thereabouts.

could be an idea, but if the boost solenoids fail would it not come up with it ? or would just say low boost ? or boost deactivated ?

Sparky68 · 04-25-2013, 03:35 PM

One of the most common causes of 30FF , I have the same code and about to change mine at the weekend.

zltm089 · 04-25-2013, 04:03 PM

Quote:

Originally Posted by 335iPaul27

Hi , couple weeks ago i got half engine light come on lost some boost etc, check the codes and it was low boost pressure i cleared it and it went away for a bit , i done some research on here and replaced the 2 vacuum hoses where the oil filter housing is, my old ones were in pretty poor condition. Ive checked the 2x canisters all pipes are fitted on ok and in good condition, Now the weather is warmer im getting the code pretty much everyday tends to be when the engine is hot! before the light comes on the boost is ok. Ive also pulled the brake vacuum hose off and it hisses with air.

One thing to note ive got the dreaded actuator rattle but its not too bad but i dont know how long its been like this as ive not long brought the car ,does this rattle slowly over time damage the wastegates internally ?

if anyone can help that would be great! or if anyone knows of some other vacuum pipes that fail .

is ur car mapped?

335iPaul27 · 04-25-2013, 04:05 PM

Quote:

Originally Posted by zltm089

is ur car mapped?

yeh i think it has been remapped , don't know who by though .

335iPaul27 · 04-25-2013, 04:12 PM

Ive had alittle search on N54tech.com, looks like it could point too worn wastegates which explain the nosy actuators/wastegates in the morning as they wont be seating shut properly. They have got louder by the week. Ive read a DIY on adjusting the actuator rods shorter too take up the slack which could be causing the low boost as they are getting stuck open , makes sense as my car can be laggy with slow spool up, normally i get this engine light when it gets laggy, if the boost isn't there then it will flag up the code.

Heres a link if anyone is interested
http://www.n54tech.com/forums/showth...ight=wastegate

335iPaul27 · 04-25-2013, 05:04 PM

Quote:

Originally Posted by Sparky68

One of the most common causes of 30FF , I have the same code and about to change mine at the weekend.

let me know how u get on m8

Sparky68 · 04-25-2013, 05:26 PM

Been messing about with it for too long, changed plugs, bought a AA charge pipe and BOV hoping to cure it but, it still there, hopefully solenoids will sort it once and for all.

335iPaul27 · 04-27-2013, 01:39 PM

I adjusted my actuator rod for the rear turbo today, it had so much play it was unbelievable, there's no way boost pressure was going to fully operate it properly, i gave it 4 turns and refitted, it was complete bastard to do by the way but well worth it. The car spools up much quicker and absolutely flys!

nicktyler · 04-27-2013, 04:45 PM

Has adjusting the actuator fixed your rattle? How long did it take?

Sparky68 · 04-28-2013, 04:06 AM

Quote:

Originally Posted by 335iPaul27

I adjusted my actuator rod for the rear turbo today, it had so much play it was unbelievable, there's no way boost pressure was going to fully operate it properly, i gave it 4 turns and refitted, it was complete bastard to do by the way but well worth it. The car spools up much quicker and absolutely flys!

Can hardly even see it, must have been a ballache of a job.

335iPaul27 · 04-28-2013, 07:09 AM

Quote:

Originally Posted by nicktyler

Has adjusting the actuator fixed your rattle? How long did it take?

Hi, it hasn't stopped the rattling but has cured the low boost code, you won't be able to stop the rattle unless you modify the waste gate arm, its the side to side play thats causing the noise, on the 2007 onwards it looks like they have put brass spacer between the arm to stop this or they have redesigned it altogether.

335iPaul27 · 04-28-2013, 07:10 AM

Quote:

Originally Posted by Sparky68

Can hardly even see it, must have been a ballache of a job.

Yes the Yanks make it look easy ! but they dont have a steering column in there way !

Sparky68 · 04-28-2013, 07:13 AM

Wondering if this could be the cause of my 30FF

335iPaul27 · 04-28-2013, 09:28 AM

Quote:

Originally Posted by Sparky68

Wondering if this could be the cause of my 30FF

From the top have feel down for the actuator arm and push it in and out, you get an idea of how much play there is untill the actual diaphragm inside moves in and out, when i first pushed mine in it was super stiff almost like i free'd something up inside the actuator , i took it out for a drive and it felt much better, i still adjusted the rod as this is what i planned to do anyway. Fingers crossed it be ok.

Sparky68 · 04-28-2013, 12:49 PM

Anyone got the gear to do this?

http://www.n54tech.com/forums/showthread.php?t=16548

phil200tdi · 04-29-2013, 02:14 AM

Yep.

All you need is one of these:

http://www.amazon.co.uk/Draper-59075...s=vacuum+gauge

Otherwise, I could give you a hand in a few weeks time. Got a stag do and holiday...

Sparky68 · 04-29-2013, 06:14 AM

Quote:

Originally Posted by phil200tdi

Yep.

All you need is one of these:

http://www.amazon.co.uk/Draper-59075...s=vacuum+gauge

Otherwise, I could give you a hand in a few weeks time. Got a stag do and holiday...

That would be fantastic mate. Let me know when you are free and will sort something out.

nicktyler · 04-29-2013, 06:23 AM

I'm starting to think that the best way to sort this out is just to get a really loud induction kit to drown out the rattle.

04-25-2013, 02:46 PM	#1
335iPaul27 New Member Drives: 335i Join Date: Apr 2013 Location: London Posts: 21 iTrader: (0)	Low boost 30ff code need some help Hi , couple weeks ago i got half engine light come on lost some boost etc, check the codes and it was low boost pressure i cleared it and it went away for a bit , i done some research on here and replaced the 2 vacuum hoses where the oil filter housing is, my old ones were in pretty poor condition. Ive checked the 2x canisters all pipes are fitted on ok and in good condition, Now the weather is warmer im getting the code pretty much everyday tends to be when the engine is hot! before the light comes on the boost is ok. Ive also pulled the brake vacuum hose off and it hisses with air. One thing to note ive got the dreaded actuator rattle but its not too bad but i dont know how long its been like this as ive not long brought the car ,does this rattle slowly over time damage the wastegates internally ? if anyone can help that would be great! or if anyone knows of some other vacuum pipes that fail .
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04-25-2013, 02:53 PM	#2
zltm089 Major General Drives: 335i SE Coupe Space Grey Join Date: Nov 2008 Location: LONDON Posts: 6,475 iTrader: (0) Garage List 2006 BMW 335i [5.00]	Diverter valves maybe? but could be actuators too.. When i got the 30ff codes, my actuators were fcuked ... __________________ Current Car: E92 335i SE Dream Cars: AMG SL65 Black,GallardoSuperleggera, GTR 2012, Agera R, F430 Scuderia, DBS, EVO X FQ400, Lexus LFA, F10 M5, e92 M3, GT3 RS4.0, Ferrari 458, Ferrari F12, R8 V10 plus, Jaguar F Type V8, Lamborghini LP700-4 Aventador, Chevrolet Camaro ZL1, C63 AMG Coupe Black, Vanquish 2012.

04-25-2013, 03:22 PM	#4
Sparky68 Lieutenant Colonel Drives: e90 335i JB4 Join Date: Oct 2012 Location: Cambs Posts: 1,532 iTrader: (6) Garage List 2007 BMW 335i [0.00]	Boost solenoids? If so they are about £80 each or thereabouts. __________________ ~ JB4 ~ BMS DCI ~ Active Autowerks Chargepipe ~ Active Autowerks BOV ~ Borla Catback Exhaust ~

04-25-2013, 03:35 PM	#6
Sparky68 Lieutenant Colonel Drives: e90 335i JB4 Join Date: Oct 2012 Location: Cambs Posts: 1,532 iTrader: (6) Garage List 2007 BMW 335i [0.00]	One of the most common causes of 30FF , I have the same code and about to change mine at the weekend. __________________ ~ JB4 ~ BMS DCI ~ Active Autowerks Chargepipe ~ Active Autowerks BOV ~ Borla Catback Exhaust ~

04-25-2013, 04:12 PM	#9
335iPaul27 New Member Drives: 335i Join Date: Apr 2013 Location: London Posts: 21 iTrader: (0)	Ive had alittle search on N54tech.com, looks like it could point too worn wastegates which explain the nosy actuators/wastegates in the morning as they wont be seating shut properly. They have got louder by the week. Ive read a DIY on adjusting the actuator rods shorter too take up the slack which could be causing the low boost as they are getting stuck open , makes sense as my car can be laggy with slow spool up, normally i get this engine light when it gets laggy, if the boost isn't there then it will flag up the code. Heres a link if anyone is interested http://www.n54tech.com/forums/showth...ight=wastegate Last edited by 335iPaul27; 04-25-2013 at 05:33 PM.

04-25-2013, 03:20 PM	#3
335iPaul27 New Member Drives: 335i Join Date: Apr 2013 Location: London Posts: 21 iTrader: (0)	Im hoping its not the actuators , i had it on the dyno couple weeks ago and it made good power ! so not sure what too think now! can the actuators be brought separately??

04-25-2013, 05:26 PM	#11
Sparky68 Lieutenant Colonel Drives: e90 335i JB4 Join Date: Oct 2012 Location: Cambs Posts: 1,532 iTrader: (6) Garage List 2007 BMW 335i [0.00]	Been messing about with it for too long, changed plugs, bought a AA charge pipe and BOV hoping to cure it but, it still there, hopefully solenoids will sort it once and for all. __________________ ~ JB4 ~ BMS DCI ~ Active Autowerks Chargepipe ~ Active Autowerks BOV ~ Borla Catback Exhaust ~

04-27-2013, 01:39 PM	#12
335iPaul27 New Member Drives: 335i Join Date: Apr 2013 Location: London Posts: 21 iTrader: (0)	I adjusted my actuator rod for the rear turbo today, it had so much play it was unbelievable, there's no way boost pressure was going to fully operate it properly, i gave it 4 turns and refitted, it was complete bastard to do by the way but well worth it. The car spools up much quicker and absolutely flys!

04-27-2013, 04:45 PM	#13
nicktyler Captain Drives: 335i Join Date: Jan 2012 Location: Essex Posts: 821 iTrader: (2) Garage List 2007 BMW E92 335i [0.00]	Has adjusting the actuator fixed your rattle? How long did it take?

04-28-2013, 07:13 AM	#17
Sparky68 Lieutenant Colonel Drives: e90 335i JB4 Join Date: Oct 2012 Location: Cambs Posts: 1,532 iTrader: (6) Garage List 2007 BMW 335i [0.00]	Wondering if this could be the cause of my 30FF __________________ ~ JB4 ~ BMS DCI ~ Active Autowerks Chargepipe ~ Active Autowerks BOV ~ Borla Catback Exhaust ~

04-28-2013, 12:49 PM	#19
Sparky68 Lieutenant Colonel Drives: e90 335i JB4 Join Date: Oct 2012 Location: Cambs Posts: 1,532 iTrader: (6) Garage List 2007 BMW 335i [0.00]	Anyone got the gear to do this? http://www.n54tech.com/forums/showthread.php?t=16548 __________________ ~ JB4 ~ BMS DCI ~ Active Autowerks Chargepipe ~ Active Autowerks BOV ~ Borla Catback Exhaust ~

04-29-2013, 02:14 AM	#20
phil200tdi Lieutenant Colonel Drives: 335i M Sport E90 LCI manual Join Date: Jan 2011 Location: Aylesbury Posts: 1,774 iTrader: (0)	Yep. All you need is one of these: http://www.amazon.co.uk/Draper-59075...s=vacuum+gauge Otherwise, I could give you a hand in a few weeks time. Got a stag do and holiday... __________________ 2008 E90 335i LCI M Sport / Manual / Black / Red Leather / Avon ZZ3 / VMR710 Mods: JB4 / BMS DCI /AR Design DPs / ETS FMIC / Water Meth Injection / Spec Stage 2+ Clutch / BMS Chargepipe / BMS OCC / Cool Carbon Brake Pads / Rob Beck PCV Valve / Forge Diverter Valves Wish List: LSD / Bastuck Quads / Birds Suspension / M3 Arms Last edited by phil200tdi; 04-29-2013 at 02:21 AM.

04-29-2013, 06:23 AM	#22
nicktyler Captain Drives: 335i Join Date: Jan 2012 Location: Essex Posts: 821 iTrader: (2) Garage List 2007 BMW E92 335i [0.00]	I'm starting to think that the best way to sort this out is just to get a really loud induction kit to drown out the rattle.

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