07 E93 grinding noise from middle/rear of car (Solved)

deeznuts1 · 01-04-2022, 07:44 AM

Hi,

My car has started to make a grinding/rattling noise from the middle/rear of the car (sounds like just after the secondary cats). This only happens at idle as far as I'm aware as I cannot hear it when driving but the sound may be dampened by exhaust noise. It happens through all the gears and briefly stops if I turn the wheel. Before I start taking it apart, has anyone dealt with this before or had anything similar? Video linked below

https://youtu.be/rT274KBNyeE

Phil325i · 01-04-2022, 10:50 AM

Internal exhaust baffles or cat internals braking down and rattling about?

deeznuts1 · 01-04-2022, 08:04 PM

Quote:

Originally Posted by Phil325i

Internal exhaust baffles or cat internals braking down and rattling about?

Thanks for the reply. I will check the secondary cats with a probe tomorrow and move along the exhaust. My first guess was an axle rubbing on the heatshield so will also check this once it is jacked up.

deeznuts1 · 01-06-2022, 01:31 PM

For anyone who may come across this post in the future - this ended up being the two bolts for the exhaust bracket that mounts onto the transmission (AT). Tightened both these bolts up and problem was solved.

Chappers 71 · 01-06-2022, 03:41 PM

Nice easy fix, always a bonus when we get one of those

01-04-2022, 07:44 AM	#1
deeznuts1 Registered 3 Rep 4 Posts Drives: 07 E93 BMW 335i Join Date: Jan 2022 Location: UK iTrader: (0)	07 E93 grinding noise from middle/rear of car (Solved) Hi, My car has started to make a grinding/rattling noise from the middle/rear of the car (sounds like just after the secondary cats). This only happens at idle as far as I'm aware as I cannot hear it when driving but the sound may be dampened by exhaust noise. It happens through all the gears and briefly stops if I turn the wheel. Before I start taking it apart, has anyone dealt with this before or had anything similar? Video linked below https://youtu.be/rT274KBNyeE Last edited by deeznuts1; 01-06-2022 at 01:31 PM..
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01-04-2022, 10:50 AM	#2
Phil325i Brigadier General 616 Rep 3,194 Posts Drives: E92 325i MSport Coupe Join Date: Apr 2012 Location: UK South East iTrader: (1) Garage List 2009 BMW 325i Coupe [6.00]	Internal exhaust baffles or cat internals braking down and rattling about? __________________ E92 pre-LCI 325i - Ohlins R&T; H&R spacers; M3 strut brace; Swift thrust sheets; 3 x chassis braces; diff brace; N53 V-brace; 034 subframe inserts; BMS clutch stop; BMS CDV; RE g/box mounts; Delrin shift bushes; Saikoumichi OCC; Cyba scoops; BMW Perf Exhaust; HEL s/steel brake hoses; M3 rear spoiler; Recaro Sportster CSs; M3 white dash LEDs; LED Angels; LED side repeaters; BMW Perf black grille; CSL reps; SSDD carbon diffuser; Monster Wrap black roof/clear front
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01-06-2022, 01:31 PM	#4
deeznuts1 Registered 3 Rep 4 Posts Drives: 07 E93 BMW 335i Join Date: Jan 2022 Location: UK iTrader: (0)	For anyone who may come across this post in the future - this ended up being the two bolts for the exhaust bracket that mounts onto the transmission (AT). Tightened both these bolts up and problem was solved.
	Appreciate 2 Chappers 715483.00 Phil325i615.50 Quote

01-06-2022, 03:41 PM	#5
Chappers 71 Major General 5483 Rep 5,421 Posts Drives: Beige G31 40ix m sport Join Date: Feb 2016 Location: Kent, The Garden of England iTrader: (0) Garage List 2018 G31 xdrive 40i ... [4.00] 2006 E92 335i SE [9.50]	Nice easy fix, always a bonus when we get one of those __________________ G31 40ix M Sport E92 335i. E36 328is coupe E39 540i V8 6SP manual E34 3.6 M5. E34 525i sport. VW Jetta Mk2 GTI 16v. 1679cc 1967 resto-cal beetle
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