Knocking Noise

[AWD Chaser]

G'Day all.

Another knocking noise one for ya. Tonite, and on previous ocasions, I have gone around a corner pretty hard (usually left hand corners) and on quite a few ocasions, it sounds like a big thump/whack/knock, (however you want to descibe a big sound) come from aprox, around my feet - it sounds like I flicked up a big rock or stick or something onto some part of the floorpan or firewall. The first time I dismised it as just that, but now it has happened a few more times - what is this noise. It concerns me because of the seriousness of the thump.

PLEASE HELP.

P.S. - AU3 Falcon Futura, stock alloy rims, only slightly lowered suspension (done before I got the car). I can't see any dents either.

[RspecAU]

Have u had the steering rack recall done yet? All AU's were suposed to have this done somthing had to be welded up. hope that helps.

[AWD Chaser]

P.S. - AU3 Falcon Futura

Didn't affect the AU3's

[XR8GRL]

Originally Posted by au3 chaser

Didn't affect the AU3's

All AU's, so yes series 3 aswell.

[AWD Chaser]

Thats not what I was told in other posts, or by the product recall website (the government one)

[XR8GRL]

Originally Posted by au3 chaser

Thats not what I was told in other posts, or by the product recall website (the government one)

Yes, I was misinformed.

[keenaz]

Hey Chaser, my 3 series ute does that same thing when im going through the tight drive thrus at maccas (maybe i only hear it then coz i turn down the music). Anyhoo, if anyone finds the cure id also love to hear it!

[JC]

What runs under that side of the car - exhaust, and that's about it. Could be extractors hitting the chassis rails (doubtful though). Could also be worn roll bar bushes (chassis ones, not the link ones) - this is more likely. When I first got mine, it happened all the time, and bushes was the issue.

My car has a similar noise on passenger side when I reverse turning left, but being a V8, I think it is the extractors hitting a chassis bolt - there's not much room there. I have already replaced the roll bar bushes with nolathane ones, so pretty sure that's not the problem on mine.

[Bucknaked]

AU3's were not affected with the steering rack recall. Car had to be build before sometime before 01 (i think) to have the recall. My Series 3 never had the recall.

[TURBOTAXI]

Check your ball joints and tie rod ends.
An AU front end is normally good for up to 300,000 k's but if it has had a few good knocks you might need some new wearing parts.

[AWD Chaser]

Yeah - I'll have a look now, but the thing is, is it's only done 56,000 - it only had 36,000 when i got it - no real serious driving (that I know of). Usually just heavy accelerating, and barely any wheel spinning or drifting. But things wear out so I'll check it out.

[TURBOTAXI]

Dont tighten them too much.

[AWD Chaser]

Nah - used the o'll torque wrench. Checked all the bushes etc and they all seem fine.. don't know what it could be.

[TURBOTAXI]

Take it to a suspension place and see if they know what it is?

[Baboon_AU]

it may not be your sump that was leaking, i had an oil leak and i had no idea where it came from and heaps was around my sump, it ended up being the timing chain adjustment screw (that was a releif) but now i have blown a corner out of my sump gasket so i know it definately coming from there.