Help: Rear end making weird noise [NOT differential clunk] - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

bosozoku.s14 · 04-16-2005, 01:18 AM

hi everyone,

the rear end of my 95 s14 is making weird knocking noise when i driving on bumpy surface on freeway...it almost sounds like something hitting the trunk.

the funny thing is it doesnt make that noise when i hit big bump on freeway...

its not differential clunk, because i have SPL subframe spacers installed, i know how it sounds like and i already used to it.

could that be bad axles? something wrong with my open differential?
please help me figure out this problem, since that noise is killing me and make me want to get rid of the car

any help will be highly appreciated...

I tried:
1. took out everything in the trunk - no luck
2. secure the spare tire - no luck
3. change differential fluid, although it doesn't seem like helping this issue, i thought i'd just give it a try. - no luck
4. i checked the trunk latch too - no luck

closebyu26 · 04-16-2005, 02:01 AM

Theres only a couple thing I can think of. Maybe check the jack and tire stuff. Or make sure your shocks arn't blown, or that your toe adj, and camber adjs are tight. Make sure your exhaust isn't hitting somewhere.Thats about all I can think of! Good luck!

bosozoku.s14 · 04-16-2005, 06:56 AM

i already checked the jack and tire...
i got a brand new set of coilovers...
exhaust is fine...

the camber will make noise too?
any others?

EchoOfSilence · 04-17-2005, 02:13 AM

My friend's s14 has sounds on bumps because his exhaust hangers are fucked. so his muffler hits his underbody

aznpoopy · 04-17-2005, 02:18 AM

theres a little bracket that extends from the tranny mount to the exhaust that holds it in place. if its broken the exhaust will move around alot and bump against the bumper.

to see if the exhaust is your issue, sit in the car. have one of your buddies push up and tap the exhaust against the rear bumper. the noise is pretty unique.

otherwise maybe its just your trunk tapping. see if those rubber stopper things are worn out.

*NemeGuero* · 04-17-2005, 06:20 AM

it's INSIDE the muffler that my noise comes from Echo.. my hangers are fine... and who said we were friends? dick head...

j/k
hah

bosozoku.s14 · 04-17-2005, 12:21 PM

INSIDE the muffler??

i saw my muffler has crack on the side of it...dont kno if thats what it is...

the noise sounds like something hitting the underbody of the rear end

*NemeGuero* · 04-17-2005, 08:32 PM

that's what mine did but when i took the muffler off it went away.. it also made the noise when I was at a complete stop and I had my friend get out and check it and the muffler was not moving.
therefore.. it was the insides of the muffler.. the packing

get under your car.. rattle the exhaust and see if it hits somewhere..

remove the muffler and see if the noise still persists.

04-16-2005, 01:18 AM	#1
bosozoku.s14 Zilvia Member Join Date: Dec 2004 Location: San Jose Posts: 252 Trader Rating: (0) Feedback Score: 0 reviews	Help: Rear end making weird noise [NOT differential clunk] hi everyone, the rear end of my 95 s14 is making weird knocking noise when i driving on bumpy surface on freeway...it almost sounds like something hitting the trunk. the funny thing is it doesnt make that noise when i hit big bump on freeway... its not differential clunk, because i have SPL subframe spacers installed, i know how it sounds like and i already used to it. could that be bad axles? something wrong with my open differential? please help me figure out this problem, since that noise is killing me and make me want to get rid of the car any help will be highly appreciated... I tried: 1. took out everything in the trunk - no luck 2. secure the spare tire - no luck 3. change differential fluid, although it doesn't seem like helping this issue, i thought i'd just give it a try. - no luck 4. i checked the trunk latch too - no luck

04-17-2005, 02:13 AM	#4
EchoOfSilence Nissanaholic! Join Date: Aug 2003 Location: Los Angeles/Berkeley, CA Posts: 2,238 Trader Rating: (1) Feedback Score: 1 reviews	My friend's s14 has sounds on bumps because his exhaust hangers are fucked. so his muffler hits his underbody __________________ Petition Nissan to Make the IDx on http://IDxClub.co !

04-17-2005, 12:21 PM	#7
bosozoku.s14 Zilvia Member Join Date: Dec 2004 Location: San Jose Posts: 252 Trader Rating: (0) Feedback Score: 0 reviews	INSIDE the muffler?? i saw my muffler has crack on the side of it...dont kno if thats what it is... the noise sounds like something hitting the underbody of the rear end Last edited by bosozoku.s14; 04-17-2005 at 01:29 PM..

04-16-2005, 02:01 AM	#2
closebyu26 Join Date: Apr 2005 Location: OKINAWA, JP Age: 48 Posts: 49 Trader Rating: (0) Feedback Score: 0 reviews	Theres only a couple thing I can think of. Maybe check the jack and tire stuff. Or make sure your shocks arn't blown, or that your toe adj, and camber adjs are tight. Make sure your exhaust isn't hitting somewhere.Thats about all I can think of! Good luck!

04-16-2005, 06:56 AM	#3
bosozoku.s14 Zilvia Member Join Date: Dec 2004 Location: San Jose Posts: 252 Trader Rating: (0) Feedback Score: 0 reviews	i already checked the jack and tire... i got a brand new set of coilovers... exhaust is fine... the camber will make noise too? any others?

04-17-2005, 02:18 AM	#5
aznpoopy Post Whore! Join Date: Mar 2003 Location: New Jersey Age: 44 Posts: 5,013 Trader Rating: (1) Feedback Score: 1 reviews	theres a little bracket that extends from the tranny mount to the exhaust that holds it in place. if its broken the exhaust will move around alot and bump against the bumper. to see if the exhaust is your issue, sit in the car. have one of your buddies push up and tap the exhaust against the rear bumper. the noise is pretty unique. otherwise maybe its just your trunk tapping. see if those rubber stopper things are worn out.

04-17-2005, 06:20 AM	#6
NemeGuero No more nissan. Join Date: Jan 2003 Location: RAIN, Washington. Age: 40 Posts: 8,132 Trader Rating: (10) Rides Gallery: NemeGuero Feedback Score: 10 reviews	it's INSIDE the muffler that my noise comes from Echo.. my hangers are fine... and who said we were friends? dick head... j/k hah

04-17-2005, 08:32 PM	#8
NemeGuero No more nissan. Join Date: Jan 2003 Location: RAIN, Washington. Age: 40 Posts: 8,132 Trader Rating: (10) Rides Gallery: NemeGuero Feedback Score: 10 reviews	that's what mine did but when i took the muffler off it went away.. it also made the noise when I was at a complete stop and I had my friend get out and check it and the muffler was not moving. therefore.. it was the insides of the muffler.. the packing get under your car.. rattle the exhaust and see if it hits somewhere.. remove the muffler and see if the noise still persists.