Acceleration Rattle

mcdonnellk · 04-23-2010, 06:28 AM

When accelerating hard in either D, S or M mode my car makes a metalic rattling sound which is driving me crazy.

Has anyone else experienced this?

Mr.N · 04-23-2010, 07:46 AM

Hi mate and welcome.

Could possibly be the wastegate actuator issue?

Have a look on YouTube for that and see if it sounds like your noise.

Alternatively, could it be coming from the exhaust?

DrunkenMonkey · 04-23-2010, 08:02 AM

wastegate rattle is common on 335i's

usually at low revs and from cold ?

There are quite a few threads on here, defo worth a search.

Dealers got a set method on dealing with it, think they do an ECU update, then replace actuators. Well they did for me and it seems to have cured it.

Mr.N · 04-23-2010, 09:08 AM

Quote:

Originally Posted by DrunkenMonkey

Dealers got a set method on dealing with it, think they do an ECU update, then replace actuators. Well they did for me and it seems to have cured it.

I should be picking mine up in a few hours (fingers crossed) after having stage 2 of the above method completed.

seanblee · 04-24-2010, 06:09 AM

Don't think wastegate rattle would happen on hard acceleration though - it's pretty much only on spool-down. You'd notice it as the engine returns to tickover speed if you blip the throttle when you're stationary in neutral.

dxb335d · 04-24-2010, 06:55 AM

Major known issue, wonder how much this has cost bmw.

04-23-2010, 06:28 AM	#1
mcdonnellk Registered 0 Rep 1 Posts Drives: 2008 e90 335i M Sport Join Date: Apr 2010 Location: Cambridge, UK iTrader: (0)	Acceleration Rattle When accelerating hard in either D, S or M mode my car makes a metalic rattling sound which is driving me crazy. Has anyone else experienced this?
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04-23-2010, 07:46 AM	#2
Mr.N BM Baby 12 Rep 404 Posts Drives: E92 335d Join Date: Sep 2008 Location: North West iTrader: (0)	Hi mate and welcome. Could possibly be the wastegate actuator issue? Have a look on YouTube for that and see if it sounds like your noise. Alternatively, could it be coming from the exhaust?
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04-23-2010, 08:02 AM	#3
DrunkenMonkey Private First Class 12 Rep 151 Posts Drives: e90 335ise Join Date: Feb 2010 Location: Underground iTrader: (0)	wastegate rattle is common on 335i's usually at low revs and from cold ? There are quite a few threads on here, defo worth a search. Dealers got a set method on dealing with it, think they do an ECU update, then replace actuators. Well they did for me and it seems to have cured it.
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04-24-2010, 06:09 AM	#5
seanblee Captain 59 Rep 799 Posts Drives: 2021 G21 M340i Join Date: Dec 2008 Location: Enfield, UK iTrader: (2)	Don't think wastegate rattle would happen on hard acceleration though - it's pretty much only on spool-down. You'd notice it as the engine returns to tickover speed if you blip the throttle when you're stationary in neutral. Last edited by seanblee; 04-24-2010 at 07:21 AM..
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04-24-2010, 06:55 AM	#6
dxb335d The Tarmac Terrorist 1011 Rep 29,344 Posts Drives: 997.2 GT3 Join Date: Mar 2007 Location: ''Fandango Towers'' iTrader: (3) Garage List 2010 Porsche 997.2 GT3 [9.50] 2003 BMW E46 M3 [6.00] 2007 BMW E92 335D [5.50]	Major known issue, wonder how much this has cost bmw. __________________ 997.2 GT3
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