Anyone recognize this sound?

RedScytheM3 · 09-11-2019, 03:03 PM

I noticed a strange ticking/tapping/crackling noise coming from under the front of the car at low speed and rpm, usually after take off from a stop. Sounds like tapping on the inside of a paint can or rain starting to tap on a corrugated roof. Two weeks ago I replaced my alternator and made sure to torque its mounting bolts back down. So, I'm not sure what the noise is. I need to get back under the car and make sure the underside breast plate and stabilizer bar mounting bolts are torqued back down, but I don't suspect it's that. Here is a video I took. Mind the gravely parking lot. You can hear the rapid tapping around 7 sec in.

Thanks

///M Power-Belgium · 09-12-2019, 08:32 AM

I have no idea what your noise can be . One thing is for sure ,Your noise is NOT bearing related .
And that's the good news of your issue ...

RedScytheM3 · 09-12-2019, 10:30 AM

Quote:

Originally Posted by ///M Power-Belgium

I have no idea what your noise can be . One thing is for sure ,Your noise is NOT bearing related .
And that's the good news of your issue ...

Ha that's right!

RedScytheM3 · 09-13-2019, 11:00 AM

No one's heard this before?

RedScytheM3 · 09-19-2019, 08:58 PM

Bump

No one?

Lowflight · 09-21-2019, 01:23 PM

Heatshield for exhaust rattling maybe. Just sounds like something loose and rattling, nothing catastrophic

m3jala · 09-21-2019, 01:49 PM

Quote:

Originally Posted by Lowflight

Heatshield for exhaust rattling maybe. Just sounds like something loose and rattling, nothing catastrophic

+1 on exhaust heat shield as something first thing to check.

09-11-2019, 03:03 PM	#1
RedScytheM3 Science stuff and stuff 395 Rep 414 Posts Drives: 2008 E92 ///M3 Join Date: Jun 2018 Location: Houston iTrader: (0)	I noticed a strange ticking/tapping/crackling noise coming from under the front of the car at low speed and rpm, usually after take off from a stop. Sounds like tapping on the inside of a paint can or rain starting to tap on a corrugated roof. Two weeks ago I replaced my alternator and made sure to torque its mounting bolts back down. So, I'm not sure what the noise is. I need to get back under the car and make sure the underside breast plate and stabilizer bar mounting bolts are torqued back down, but I don't suspect it's that. Here is a video I took. Mind the gravely parking lot. You can hear the rapid tapping around 7 sec in. Thanks
	Appreciate 1 ///M Power-Belgium63296.50 Tweet Quote

09-12-2019, 08:32 AM	#2
///M Power-Belgium General 63297 Rep 24,651 Posts Drives: ///M3-E92-DCT Silverstone II Join Date: Jul 2012 Location: Belgium iTrader: (0)	I have no idea what your noise can be . One thing is for sure ,Your noise is NOT bearing related . And that's the good news of your issue ... __________________ "MAX VERSTAPPEN" IS THE 2021+2022+2023 F1 WORLD CHAMPION - #UnLeashTheLion BPM DEV-Tune & DCT Software-Tune & Servotronic & coding ///Alpine HID Angeleyes ///Oem.exhaust mod.
	Appreciate 1 RedScytheM3394.50 Quote

09-13-2019, 11:00 AM	#4
RedScytheM3 Science stuff and stuff 395 Rep 414 Posts Drives: 2008 E92 ///M3 Join Date: Jun 2018 Location: Houston iTrader: (0)	No one's heard this before?
	Appreciate 0 Quote

09-19-2019, 08:58 PM	#5
RedScytheM3 Science stuff and stuff 395 Rep 414 Posts Drives: 2008 E92 ///M3 Join Date: Jun 2018 Location: Houston iTrader: (0)	Bump No one?
	Appreciate 0 Quote

09-21-2019, 01:23 PM	#6
Lowflight Captain 336 Rep 737 Posts Drives: 2012 E93 M3 Join Date: Mar 2011 Location: Memphis TN iTrader: (2)	Heatshield for exhaust rattling maybe. Just sounds like something loose and rattling, nothing catastrophic
	Appreciate 1 RedScytheM3394.50 Quote