Tyler Dietzenbach

iTrader: (5)

I know sounds have been beaten to literal death on here, but this is different/unique. I have a 1998 Z28. 44K miles. A4 tranny. Performance rear option. Everything is original (to my knowledge) I've had the car since about 2011. Its done this since day 1. So what happens is, is that I hear a popping sound in the rear. There are only 2 scenarios that it occurs. First, it makes the sound when the car is bouncing, not when hitting a bump, more so when hitting dips or humps in the road. The other scenario happens when exiting the vehicle. It is quite audible. Sounds like a heavy spring type pop. Almost 50/50 on if it happens when exiting the car.

Tyler Dietzenbach

iTrader: (5)

I will also add that it sounds like its the passenger side rear only.

GHall8788

are your springs sitting correctly on the top?

Tyler Dietzenbach

iTrader: (5)

I'm going to have to look at those tomorrow. Sorry for the late reply. Been busy.

Tyler Dietzenbach

iTrader: (5)

Springs look perfectly fine on top.

Tyler Dietzenbach

iTrader: (5)

Any other theories?

Tyler Dietzenbach

iTrader: (5)

I've tried bouncing the car by pushing down on it, and also from underneath pushing up and bouncing it. I can't replicate it at all

Tyler Dietzenbach

iTrader: (5)

Daily Bump

Tyler Dietzenbach

iTrader: (5)

Bump.

Tyler Dietzenbach

iTrader: (5)

Bump. Had the problem for roughly a decade.. seems a little worse this year. Basically does it on bumps now too.

Tyler Dietzenbach

iTrader: (5)

Do these look normal? To me they don't. Could that cause the sound im hearing?

sjsingle1

iTrader: (1)

the bottom bushing is def shot

stock suspension ? LOTS of rubber that needs to be checked to make sure its not dry rotted and crack......which it is pro anyway and needs replacing

Tyler Dietzenbach

iTrader: (5)

Yes. Everything is stock and original except for a lid, tires, battery, and SSRA.

Tyler Dietzenbach

iTrader: (5)

I jacked the car up on each side and re-lubed the entire brake system (not because of the sound). Ever since I jacked it up and did that, the sound has totally disappeared and not come back. 500 miles later. No clue why...

Tyler Dietzenbach

iTrader: (5)

The pingy spring sound came back today after driving over some really rough roads

pdxmotorhead

lube the sway bar bushings,, they can be sticky and if the end links are worn the bar will make a pop/thump noise ?
Happens on my Jeep .. So wild guess.. I also had a noise that sounds similar caused by a cracked shock mount..