Rear end clunking/poping noise
#1
Rear end clunking/poping noise
I have a 2004 G35 coupe and have been hearing this noise occasionally when I go over bumps or just going at low speeds or making a left turn. The weird thing is, the noise is not present on every bump, pothole etc, and even occurs on relatively sooth parking lots. I was able to constantly replicate it with yanking the car to the left (0:00-0:05 sec of the video). Doing the same to the left has no effect.
I jacked the rear using the included jack (dont have anything else at the moment) and there is no play or any abnormal noise, everything looks solid.
I know axle makes clicking noise and its an easy fix, but mine doesnt sound like the axle click. I will be going to a DIY garage with a lift to do a diff fluid change and to find what causes this noise. Anyone has a suggestion what too look for?
I jacked the rear using the included jack (dont have anything else at the moment) and there is no play or any abnormal noise, everything looks solid.
I know axle makes clicking noise and its an easy fix, but mine doesnt sound like the axle click. I will be going to a DIY garage with a lift to do a diff fluid change and to find what causes this noise. Anyone has a suggestion what too look for?
#2
#6
You don't have any loose stuff in your trunk or back seat that's moving around and banging against things, right? Tools... .floor jack... a bowling ball... LOL.
#7
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#8
I'm never thought to look and see how G35's secure their boots to the axle shafts, but I'm assuming it's a standard Oetiker or CV-clamp. Do you own or have access to one of those tools used to reinstall those clamps?
It's probably best to start out by pulling back both CV boots (inner and outer) and checking them for grease and maybe repack them with a good Moly grease for axle shafts.
It's probably best to start out by pulling back both CV boots (inner and outer) and checking them for grease and maybe repack them with a good Moly grease for axle shafts.
#9
Yeah, that garage has that tool, and can I do that without pulling the axle out? But if the axle is shot, will those be a fine replacement? http://www.autozone.com/drivetrain/c...?checkfit=true
#10
Yeah, that garage has that tool, and can I do that without pulling the axle out? But if the axle is shot, will those be a fine replacement? http://www.autozone.com/drivetrain/c...?checkfit=true
#11
#13
If it is indeed your axle and it's clicking already, I would just replace it vs. repacking it with grease. It could be all pitted or damaged already from excessive wear due to lubrication breakdown or something. Plus, it's a messy crappy job, lol. I rebuilt the CV joint on my Volvo before I gave it to my sister, since it was a 30 dollar fix vs 150. Well, I got it all good and tested it for a few days and when I was leaving the parking lot it ended up failing on me anyway. Luckily, it was in the parking lot and I was able to tow it, but then had to spend 300 for the mechanic to do it in a rush, since my sister was leaving and she needed the car.
After that I swore I would just replace axles now and not bother rebuilding the joints, lol. Which, is a dilemma I'm facing on my Audi now it needs a new front axle.
I'd start with the sway bar bushings and end links in the rear or just replace those while you're back there.
After that I swore I would just replace axles now and not bother rebuilding the joints, lol. Which, is a dilemma I'm facing on my Audi now it needs a new front axle.
I'd start with the sway bar bushings and end links in the rear or just replace those while you're back there.
#14
Suspension noises are notoriously hard to isolate. Since it does it while turning left, I'd focus on the right side of the car (turning left causes a load to be applied to the right side).
Swaybar endlinks are an obvious target. If you can twist the endlink with your hand, then it's worn out and should be replaced.
Another problem area is the shock mount. The bushing tends to wear out and cause a clunk. These cars are getting old and shocks are most likely worn out, but most people only seem to replace them when they're totally blown (bouncy, seized, etc).
Another item could be the rear differential bushing, those are liquid filled and leak goo all over the rear subframe/diff/exhaust pipe when ruptured. But it's probably not you issue since the noise is when turning and not on acceleration.
Swaybar and shocks are where I'd focus my attention. Let us know if you find something out.
Swaybar endlinks are an obvious target. If you can twist the endlink with your hand, then it's worn out and should be replaced.
Another problem area is the shock mount. The bushing tends to wear out and cause a clunk. These cars are getting old and shocks are most likely worn out, but most people only seem to replace them when they're totally blown (bouncy, seized, etc).
Another item could be the rear differential bushing, those are liquid filled and leak goo all over the rear subframe/diff/exhaust pipe when ruptured. But it's probably not you issue since the noise is when turning and not on acceleration.
Swaybar and shocks are where I'd focus my attention. Let us know if you find something out.