Popping noise from rear - ZR-1 Net Registry Forums

secondchance · 04-13-2009

I have been having this strange popping noise from driver side rear for about 6months. I had the car in the shop and had them try to locate where it was coming from with no success.

Then, yesterday, feeling a little guilty about being lax over keeping the car in tip top shape after seeing such well taken care cars at the Reston get together, I asked about how to get rid of brake dust grime off the inside of aluminum wheels. The gentleman with cleaning products recommended Auto Magic #66, acid base wheel cleaner.

So, today I removed one wheel at a time, sparayed the suff (50-50). Holy moly!!! Stuff is scary! Worked like magic! This stuff is industrial strength.

Furthermore, while cleaning out the rear suspension with the wheel removed, I finally found the culprit for the popping noise. It was a worn out rear leaf spring cushion. Only reason I could see this was because I had removed the wheel - visiable only from the top.

Now my rims are spick and span (despite some 104,000 miles worth of wear and curb rash), calipers are clean and soon will be rid of the strange noise.

DaveK · 04-13-2009

Good find

QB93Z · 04-13-2009

Well done!

It was nice to meet you on Sunday. You certainly have a nice looking ZR-1!!! Especially considering it is a daily driver with > 100,000 miles.

Jim

secondchance · 04-13-2009

Thanks, guys.
Watch out when both my kids get done with college - new paint job at burke's corvette in Orlando and SGC rebuild...

QB93Z · 04-13-2009

Now you're talking...!!!!!

Jagdpanzer · 04-13-2009

That popping noise could also be your half shaft u-joints on their way south.
Be sure to give them a good look over when you do the bearing hubs.

secondchance · 04-13-2009

Thanks for the tip.
It is most likely the bushing because noise coincides with up and down motion and not thrust. Nonetheless, I will look it over.

Your 94 looks better then out the show room, probably faster too. Right?

Jagdpanzer · 04-13-2009

Quote:

Originally Posted by secondchance

Your 94 looks better then out the show room, probably faster too. Right?

Thanks for the compliment, I want ot believe it's faster than when I first got it, one thing for sure it's not any slower.

04-13-2009	#1
secondchance Join Date: Aug 2006 Location: McLean, VA Posts: 3,723	Popping noise from rear I have been having this strange popping noise from driver side rear for about 6months. I had the car in the shop and had them try to locate where it was coming from with no success. Then, yesterday, feeling a little guilty about being lax over keeping the car in tip top shape after seeing such well taken care cars at the Reston get together, I asked about how to get rid of brake dust grime off the inside of aluminum wheels. The gentleman with cleaning products recommended Auto Magic #66, acid base wheel cleaner. So, today I removed one wheel at a time, sparayed the suff (50-50). Holy moly!!! Stuff is scary! Worked like magic! This stuff is industrial strength. Furthermore, while cleaning out the rear suspension with the wheel removed, I finally found the culprit for the popping noise. It was a worn out rear leaf spring cushion. Only reason I could see this was because I had removed the wheel - visiable only from the top. Now my rims are spick and span (despite some 104,000 miles worth of wear and curb rash), calipers are clean and soon will be rid of the strange noise.

04-13-2009	#2
DaveK Join Date: Jul 2004 Location: Sudbury, Ontario. Canada Posts: 1,538	Re: Popping noise from rear Good find __________________ 1991 #1516 Black/Black davidmkelly.com "Speed is often confused with insight." - Johan Cruijff

04-13-2009	#3
QB93Z Join Date: May 2007 Location: Westminster, Maryland Posts: 3,689	Re: Popping noise from rear Well done! It was nice to meet you on Sunday. You certainly have a nice looking ZR-1!!! Especially considering it is a daily driver with > 100,000 miles. Jim __________________ If it isn't fun, you aren't doing it right! 1990 Black ZR-1 - sold 1993 Quasar Blue ZR-1 1994 Competition Yellow ZR-1 1995 Dark Purple ZR-1 Maryland State Coordinator WAZOO Member

04-13-2009	#4
secondchance Join Date: Aug 2006 Location: McLean, VA Posts: 3,723	Re: Popping noise from rear Thanks, guys. Watch out when both my kids get done with college - new paint job at burke's corvette in Orlando and SGC rebuild...

04-13-2009	#5
QB93Z Join Date: May 2007 Location: Westminster, Maryland Posts: 3,689	Re: Popping noise from rear Now you're talking...!!!!! __________________ If it isn't fun, you aren't doing it right! 1990 Black ZR-1 - sold 1993 Quasar Blue ZR-1 1994 Competition Yellow ZR-1 1995 Dark Purple ZR-1 Maryland State Coordinator WAZOO Member

04-13-2009	#6
Jagdpanzer Join Date: Apr 2007 Location: Northern VA Posts: 2,661	Re: Popping noise from rear That popping noise could also be your half shaft u-joints on their way south. Be sure to give them a good look over when you do the bearing hubs.

04-13-2009	#7
secondchance Join Date: Aug 2006 Location: McLean, VA Posts: 3,723	Re: Popping noise from rear Thanks for the tip. It is most likely the bushing because noise coincides with up and down motion and not thrust. Nonetheless, I will look it over. Your 94 looks better then out the show room, probably faster too. Right?