320d engine rattle

apjames · 08-17-2011, 04:25 AM

Hi

I have an \'09 E92 320d. It has recently developed a low rev rumble/rattle under load.

Most noticeable in 1st and 2nd prior to the turbo spooling when the noise suddenly stops. It doesn\'t fade out, but stops abruptly.

The noise used to only happen when engaging the clutch, but now happens when clutch engaged Also it only happens when the car is warm.

It sounds a bit like a tappety noise but I\'m unable to locate where the noise is coming from.

Any ideas what I can check or know problems with this engine? It\'s not a huge issue at the moment, just a bit annoying.

Thanks

MEGA · 08-17-2011, 04:29 AM

I had similar and it was the alternator that was rattling... But it could be anything

Very hard to say. Get a specialist with a good ear to open the bonnet and have a listen

Ninjaoz · 08-12-2012, 10:48 AM

I have the exact problem with my 320d that we've purchased last year. We've only done 6000km so far, but the rattle noise seems more obvious on 1st or 2 gear under load when travelling low speed.

Does anyone has a solution to the problem? I'm thinking to take it back to the dealer to have a look.

CarAbuser · 08-12-2012, 10:52 AM

Could you upload a video of the rattle, might help to diagnose it.

apjames · 08-13-2012, 05:52 AM

My noise disappears instantly if I use more throttle. So only happens on light throttle.

I have presumed that it's engine management related doing something to manage fuel consumption?

I did try the throttle body adaptation reset (even though mine is a manual) and that also seemed to fix it - although only temporary. Which is what leads me to think its ECU/throttle position/fuelling related.

N47_2011oilburner · 03-09-2022, 07:17 PM

Hello fellow N47 engine users. Please help me identify the issue/sound from the engine. No idle or misfire issues. What do you think the sound is and the possible fix? I have already ordered the forte top end treatment and forte injector cleaner to try to see if that would help.

https://youtube.com/shorts/TneMgt_jLgs

Its a 2011 e90 with 110000 miles which i just purchased last week.

08-17-2011, 04:25 AM	#1
apjames New Member 1 Rep 6 Posts Drives: E92 320d M Sport Join Date: Aug 2011 Location: Yorkshire iTrader: (0)	320d engine rattle Hi I have an \'09 E92 320d. It has recently developed a low rev rumble/rattle under load. Most noticeable in 1st and 2nd prior to the turbo spooling when the noise suddenly stops. It doesn\'t fade out, but stops abruptly. The noise used to only happen when engaging the clutch, but now happens when clutch engaged Also it only happens when the car is warm. It sounds a bit like a tappety noise but I\'m unable to locate where the noise is coming from. Any ideas what I can check or know problems with this engine? It\'s not a huge issue at the moment, just a bit annoying. Thanks
	Appreciate 0 Tweet Quote

08-17-2011, 04:29 AM	#2
MEGA Dieseasal 208 Rep 6,881 Posts Drives: LCI E92 335d M-Sport Join Date: Jan 2009 Location: Harrow, London iTrader: (2)	I had similar and it was the alternator that was rattling... But it could be anything Very hard to say. Get a specialist with a good ear to open the bonnet and have a listen __________________ Previously: 2003 Peugeot 206 1.6 8v \| 2006 E90 320d M-Sport, 19" BBS CH, Full Ice-cold JL audio install, August 2010 Total BMW 6 page feature car. \| 2003 Nissan 350Z GT Coupe 286BHP Now:2010 E92 LCI 335d M-Sport
	Appreciate 0 Quote

08-12-2012, 10:48 AM	#3
Ninjaoz Major 80 Rep 1,123 Posts Drives: E39 540i, E90 320d,F15 30d Join Date: Feb 2008 Location: Melbourne iTrader: (0) Garage List 2011 BMW 320d [10.00]	I have the exact problem with my 320d that we've purchased last year. We've only done 6000km so far, but the rattle noise seems more obvious on 1st or 2 gear under load when travelling low speed. Does anyone has a solution to the problem? I'm thinking to take it back to the dealer to have a look.
	Appreciate 0 Quote

08-12-2012, 10:52 AM	#4
CarAbuser Lieutenant Colonel 486 Rep 1,551 Posts Drives: Z4 35i DCT / E92 335i DCT Join Date: Jul 2010 Location: United Kingdom iTrader: (0)	Could you upload a video of the rattle, might help to diagnose it.
	Appreciate 0 Quote

08-13-2012, 05:52 AM	#5
apjames New Member 1 Rep 6 Posts Drives: E92 320d M Sport Join Date: Aug 2011 Location: Yorkshire iTrader: (0)	My noise disappears instantly if I use more throttle. So only happens on light throttle. I have presumed that it's engine management related doing something to manage fuel consumption? I did try the throttle body adaptation reset (even though mine is a manual) and that also seemed to fix it - although only temporary. Which is what leads me to think its ECU/throttle position/fuelling related.
	Appreciate 0 Quote

03-09-2022, 07:17 PM	#6
N47_2011oilburner Registered 0 Rep 3 Posts Drives: 2011 BMW LCI 320D ED Join Date: Mar 2022 Location: London iTrader: (0)	Hello fellow N47 engine users. Please help me identify the issue/sound from the engine. No idle or misfire issues. What do you think the sound is and the possible fix? I have already ordered the forte top end treatment and forte injector cleaner to try to see if that would help. https://youtube.com/shorts/TneMgt_jLgs Its a 2011 e90 with 110000 miles which i just purchased last week.
	Appreciate 0 Quote