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Author Loud bang!
drunkenfool
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Registered: 7th Feb 03
Location: Hereford Drives: Audi R8 V8
User status: Offline
14th Jan 04 at 23:41   View User's Profile U2U Member Reply With Quote

Ive heard a really loud banging noise coming from my car recently, id say its done it about 15 times since ive had it, but only in the last 3 months or so. It just does it once, hard to explain - its not an explosion type bang, more like something has just snapped, but the car still works fine! It mainly does it when the revs are a bit low to start off, but it did it the other day when i had the clutch all the way down. Any ideas what it might be?!
thunda
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Registered: 7th Dec 02
Location: LONDON
User status: Offline
14th Jan 04 at 23:58   View User's Profile U2U Member Reply With Quote

when the clutch is down, strange
was gonna say release bearing but mmm dunno. sorry im no use
CorsAsh
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Registered: 19th Apr 02
Location: Munich
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15th Jan 04 at 00:18   View User's Profile U2U Member Reply With Quote

could be your brake shoes/pads binding against their contact surfaces, then makin the noise when they free off, if its just as the clutch comes in, this could be whats happening...
drunkenfool
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Registered: 7th Feb 03
Location: Hereford Drives: Audi R8 V8
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15th Jan 04 at 00:27   View User's Profile U2U Member Reply With Quote

would it make a really loud bang? As in loud enough to make people turn round thinking "WTF was that?!"
CorsAsh
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Registered: 19th Apr 02
Location: Munich
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15th Jan 04 at 00:41   View User's Profile U2U Member Reply With Quote

whereabouts does it come from? Can you tell?

If it was the brakes, you'd feel a tiny bit of resistance, then itd bang and free off. Usually happens when cold...
drunkenfool
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Registered: 7th Feb 03
Location: Hereford Drives: Audi R8 V8
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15th Jan 04 at 00:50   View User's Profile U2U Member Reply With Quote

i swear i can feel it in the pedals, but might be imagination. I thought it might have been the driveshaft or something, but if it did it with the clutch down, then im guessing it cant be as it wouldnt be doing much?
drunkenfool
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Registered: 7th Feb 03
Location: Hereford Drives: Audi R8 V8
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15th Jan 04 at 00:51   View User's Profile U2U Member Reply With Quote

im prety sure it comes from the middle to front of the car,not from the rear

[Edited on 15-01-2004 by drunkenfool]
CorsAsh
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Registered: 19th Apr 02
Location: Munich
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15th Jan 04 at 00:55   View User's Profile U2U Member Reply With Quote

daft question, but its not a backfire is it? just thought i'd make sure
thunda
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Registered: 7th Dec 02
Location: LONDON
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15th Jan 04 at 01:32   View User's Profile U2U Member Reply With Quote

i was gonna say that
CorsaLad16v
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Registered: 5th Mar 03
Location: Sheffield UK Drives: VW Golf
User status: Offline
15th Jan 04 at 01:49   View User's Profile U2U Member Reply With Quote

i think i've had this thing, its not like a bang its like a loud knock from the middle of the car, its done it twice on mine, i pulled up each time to check round the car n found noffin, it aint done it since
Lazarus1
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Registered: 5th Apr 02
Location: Skopje,Macedonia
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15th Jan 04 at 01:59   View User's Profile U2U Member Reply With Quote

Had it on my car once or twice like a loud bang/backfire coming under the center of the car..when changing gear,it was like an explosion from the center section of the exhaust..funny i couldn't explain it either..nothing wrong tho.
drunkenfool
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Registered: 7th Feb 03
Location: Hereford Drives: Audi R8 V8
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15th Jan 04 at 02:28   View User's Profile U2U Member Reply With Quote

didnt sound like a backfire, wasnt that type of bang. As CorsaLad16v said, it was like a loud knock


[Edited on 15-01-2004 by drunkenfool]
mjw_2k2
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Registered: 18th Sep 03
Location: Anglesey, North Wales
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15th Jan 04 at 10:11   View User's Profile U2U Member Reply With Quote

exhaust-centre section could be loose somewhere?
3CorsaMeal
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Registered: 11th Apr 02
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15th Jan 04 at 11:30   View User's Profile U2U Member Reply With Quote

i know the noise i get it, sounds really loud, i think it something inside engine colliding
drunkenfool
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Registered: 7th Feb 03
Location: Hereford Drives: Audi R8 V8
User status: Offline
15th Jan 04 at 22:37   View User's Profile U2U Member Reply With Quote

any ideas then?!
Bonus
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Registered: 13th May 02
Location: Cheltenham
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15th Jan 04 at 23:08   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by drunkenfool
didnt sound like a backfire, wasnt that type of bang. As CorsaLad16v said, it was like a loud knock


[Edited on 15-01-2004 by drunkenfool]


Maybe you have a ghost in ure car?
Sorry dont know what it really might be.
moddedcorsa
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Registered: 15th Aug 02
Location: Argyll, West scotland
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17th Jan 04 at 22:53   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by CorsAsh
could be your brake shoes/pads binding against their contact surfaces, then makin the noise when they free off, if its just as the clutch comes in, this could be whats happening...


mine did this, as brake disk was warped, so sumtimes, it was pressed against the pads, and if its dampe etc the pads stick to the disk. So wen u move off it goes bang as they separte.

new disks, problem solved.
To check if they r warped, take wheel off, jack up, start, put in gear and watch the disk goin round, if its warped it will b wobbling side to side against the pads slightly
PaulW
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Registered: 26th Jan 03
Location: Atherton, Greater Manchester
User status: Offline
17th Jan 04 at 22:56   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by moddedcorsa
quote:
Originally posted by CorsAsh
could be your brake shoes/pads binding against their contact surfaces, then makin the noise when they free off, if its just as the clutch comes in, this could be whats happening...


mine did this, as brake disk was warped, so sumtimes, it was pressed against the pads, and if its dampe etc the pads stick to the disk. So wen u move off it goes bang as they separte.

new disks, problem solved.
To check if they r warped, take wheel off, jack up, start, put in gear and watch the disk goin round, if its warped it will b wobbling side to side against the pads slightly


or you could just drive the car at 30mph and just gently apply the brakes feeling for vibrations in the steering & brake pedal
scoob
Premium Member

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Registered: 16th Oct 03
Location: Beverley, E Riding of Yorkshire
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17th Jan 04 at 22:57   View Garage View User's Profile U2U Member Reply With Quote

been told its called pinigng mate its when the car doesent have enought power in that gear i think mines does this as well its very hard to exsplain
gsi-gaz
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Registered: 23rd Mar 03
Location: st helens
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18th Jan 04 at 00:53   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by mjw_2k2
exhaust-centre section could be loose somewhere?



sounds like that fella, mine did it for the first time last night!

and i know it needs a new exhaust anyway!

got mine on order now though

magnex oval full system
5doormodder
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Registered: 16th May 02
User status: Offline
18th Jan 04 at 01:22   View User's Profile U2U Member Reply With Quote

My discs are in need of replacment, they are doing the exact same thing, when left for a while after a long jurney (Say a day or so without being used) the pads stick to the discs and when you pull away there is resistance, asif you have the handbrake on or as if theres a brick under your wheel !

When you pull away, theres a loud bang noise when the pad seperates from the disc.

I noticed mine doing it about a week ago and its dont it twice since, so ive ordered myself a set of Drilled and grooved discs and greenstuff pads Getting fitted after the weekend !.....problem solved !
M4tt
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Registered: 18th Apr 03
Location: Potters Bar
User status: Offline
18th Jan 04 at 01:34   View User's Profile U2U Member Reply With Quote

could be a buggered engine/gearbox mount.

grab your engine and try moving it, shoudn't be more than a inch of travel ( i think its an inch)
drunkenfool
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Registered: 7th Feb 03
Location: Hereford Drives: Audi R8 V8
User status: Offline
22nd Feb 04 at 04:21   View User's Profile U2U Member Reply With Quote

still doing it. New exjaust comin on the 26th, will see if it help.s
mike_1.2LS96
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Registered: 23rd Oct 03
Location: Darlington | Mazda 323 1.8 Exec
User status: Offline
22nd Feb 04 at 10:09   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by M4tt
could be a buggered engine/gearbox mount.

grab your engine and try moving it, shoudn't be more than a inch of travel ( i think its an inch)


It shouldn't move at all if its not on, and vibrate a small amount but not visibly when on.
broster
Premium Member

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Registered: 6th Dec 02
Location: Drives: E39
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22nd Feb 04 at 10:10   View Garage View User's Profile U2U Member Reply With Quote

mine moves! oh well! moves quite a bit actually

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