start up noise

aussie 64 · 11-04-2010, 08:35 AM

new member needs help with 2006 320i. On start up all is ok until I put it in reverse or drive then bad rattling from under engine which goes after about 2 mins. Also a slight lag as i drive from standing start a kind of grumble... My mechanic is thinking harmonic balancer ???? we have had car 6 weeks and getting fed up ..Car is great otherwise..

bbob · 11-04-2010, 08:56 AM

could it be the tranny??

aussie 64 · 11-04-2010, 06:01 PM

g day lila, sorry I'm a complete novice with E90's what is a tranny? .And what could be wrong with it? Glad to be part of the crew.

samchuang33 · 11-04-2010, 07:03 PM

Quote:

Originally Posted by aussie 64

g day lila, sorry I'm a complete novice with E90's what is a tranny? .And what could be wrong with it? Glad to be part of the crew.

No worriew. I think he was refering to transmission. I would have guess that it could be the transmission.

So only on reverse?

johnnydad · 11-04-2010, 07:57 PM

He did say Reverse or Drive - so either as engine/transmission is under load or revs drop I suppose.

Honestly could be so, so many things I doubt you'll get a useful diagnosis from forums.

E92325i · 11-04-2010, 08:44 PM

In my opinion you are wasting time and money with your normal mechanic. Try and find a trusted bmw independent who has worked on and deals with these cars on a regular basis.

They may charge more per hour but will usually cost less in the long run as they will be able to find, diagnose and repair the problem quicker than a "general" mechanic who will spend hours trying to figure his way around the engine that he hasn't had much experience with it at your expense.

Good luck with getting it sorted and hopefully it's something cheap/quick to fix

EDIT: i just saw that you said you've had the car 6 weeks so should still be under statutory warranty. In that case return it to the purchaser (assuming it was a dealer) and ask them to repair it...

samchuang33 · 11-04-2010, 09:53 PM

Quote:

Originally Posted by E92325i

EDIT: i just saw that you said you've had the car 6 weeks so should still be under statutory warranty. In that case return it to the purchaser (assuming it was a dealer) and ask them to repair it...

I thought statutory warrenty usually is only for 30 days. Definitely worth a shot thou. If tranny problem, it could hurt.

E92325i · 11-04-2010, 10:19 PM

Quote:

Originally Posted by samchuang33

I thought statutory warrenty usually is only for 30 days. Definitely worth a shot thou. If tranny problem, it could hurt.

In Victoria it is 3 months or 5,000 km whichever occurs first. Not sure on other states though...

aussie 64 · 11-05-2010, 07:31 AM

You know what, to get responses like that from you lot and me being new makes me realise i've hit the right forum, thanks ... Anyway I took car to bmw specialist and he is almost sure its a defective belt tensioner ,he even showed me the difference in noise if he put pressure on it with a shifter. So car is going to get a new one fitted next week. He even said if it isnt that then he'll put the old one back no charge....so will keep you informed ok.. As a post script .... we bought the car private and it is a 2006 320i...

E92325i · 11-05-2010, 09:53 PM

Yes, i think finding a trusted bmw independent is your best bet with a car that is out of warranty.

Good to hear that he has diagnosed it and is pretty confident in what he has found. How much has he quoted for the fix if it is the belt tensioner?

aussie 64 · 11-07-2010, 02:10 AM

Yep well he reckons around $280 fitted who knows but he said its not difficult and straight forward ...will keep you informed having it done on wed this week

I ahve also had resonator removed and now can rival a wrx going through the tunnel hehe pity car cant match the wrx but for now we dipping toes in water and 320i does what we want

11-04-2010, 08:35 AM	#1
aussie 64 New Member 1 Rep 11 Posts Drives: 320i E90 executive Join Date: Nov 2010 Location: perth australia iTrader: (0)	start up noise new member needs help with 2006 320i. On start up all is ok until I put it in reverse or drive then bad rattling from under engine which goes after about 2 mins. Also a slight lag as i drive from standing start a kind of grumble... My mechanic is thinking harmonic balancer ???? we have had car 6 weeks and getting fed up ..Car is great otherwise..
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11-04-2010, 08:56 AM	#2
bbob Second Lieutenant 13 Rep 281 Posts Drives: 2009 e90 328i, 2011 e92 m3 Join Date: Oct 2010 Location: Los Angeles/ Berkeley iTrader: (1)	could it be the tranny??
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11-04-2010, 06:01 PM	#3
aussie 64 New Member 1 Rep 11 Posts Drives: 320i E90 executive Join Date: Nov 2010 Location: perth australia iTrader: (0)	engine noise g day lila, sorry I'm a complete novice with E90's what is a tranny? .And what could be wrong with it? Glad to be part of the crew.
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11-04-2010, 07:57 PM	#5
johnnydad Captain 112 Rep 931 Posts Drives: 17 BMW M2 - 05 RS Clio 182 Cup Join Date: Nov 2008 Location: Sydney, NSW iTrader: (0)	He did say Reverse or Drive - so either as engine/transmission is under load or revs drop I suppose. Honestly could be so, so many things I doubt you'll get a useful diagnosis from forums. __________________ John 17 F87 M2 Pure - long beach blue 10 E91 320d LCI - space grey - black dakota - steptronic - innovations - 157s - front PDC - Konis 99 BMW Baby Racer - red; 05 Renaultsport Clio 182 Cup - French Racing Blue - Konis - Eibachs - Remus - Turinis
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11-04-2010, 08:44 PM	#6
E92325i First Lieutenant 12 Rep 362 Posts Drives: E92 325i Join Date: Jun 2008 Location: Australia iTrader: (0)	In my opinion you are wasting time and money with your normal mechanic. Try and find a trusted bmw independent who has worked on and deals with these cars on a regular basis. They may charge more per hour but will usually cost less in the long run as they will be able to find, diagnose and repair the problem quicker than a "general" mechanic who will spend hours trying to figure his way around the engine that he hasn't had much experience with it at your expense. Good luck with getting it sorted and hopefully it's something cheap/quick to fix EDIT: i just saw that you said you've had the car 6 weeks so should still be under statutory warranty. In that case return it to the purchaser (assuming it was a dealer) and ask them to repair it...
	Appreciate 0 Quote

11-05-2010, 07:31 AM	#9
aussie 64 New Member 1 Rep 11 Posts Drives: 320i E90 executive Join Date: Nov 2010 Location: perth australia iTrader: (0)	thanks guys You know what, to get responses like that from you lot and me being new makes me realise i've hit the right forum, thanks ... Anyway I took car to bmw specialist and he is almost sure its a defective belt tensioner ,he even showed me the difference in noise if he put pressure on it with a shifter. So car is going to get a new one fitted next week. He even said if it isnt that then he'll put the old one back no charge....so will keep you informed ok.. As a post script .... we bought the car private and it is a 2006 320i...
	Appreciate 0 Quote

11-05-2010, 09:53 PM	#10
E92325i First Lieutenant 12 Rep 362 Posts Drives: E92 325i Join Date: Jun 2008 Location: Australia iTrader: (0)	Yes, i think finding a trusted bmw independent is your best bet with a car that is out of warranty. Good to hear that he has diagnosed it and is pretty confident in what he has found. How much has he quoted for the fix if it is the belt tensioner?
	Appreciate 0 Quote

11-07-2010, 02:10 AM	#11
aussie 64 New Member 1 Rep 11 Posts Drives: 320i E90 executive Join Date: Nov 2010 Location: perth australia iTrader: (0)	Yep well he reckons around $280 fitted who knows but he said its not difficult and straight forward ...will keep you informed having it done on wed this week I ahve also had resonator removed and now can rival a wrx going through the tunnel hehe pity car cant match the wrx but for now we dipping toes in water and 320i does what we want
	Appreciate 0 Quote