Strange rattling noise from under car

kenchan · 05-16-2013, 11:51 AM

check for cats. i mean animal cats.

danelonson · 05-16-2013, 03:01 PM

Cat heatshield rattled loose/off

Seems like the OP on this thread had the same problem I'm having

danelonson · 05-17-2013, 08:16 PM

I'm so happy

I was able to find out where the rattling was coming from. Its coming from the passenger front dust shield behind the rotor. The dust shield taps against the rotor and caused the chatter. Can anyone tell me in which part of the service manual I can find how this dust shield is held on? I'm thinking either it got bent somehow or it lost a screw that was holding it in place. It's hard for me to tell since I did the inspection with the car on the ground.

SouthArk370Z · 05-17-2013, 08:51 PM

Quote:

Originally Posted by danelonson

... Can anyone tell me in which part of the service manual I can find how this dust shield is held on? I'm thinking either it got bent somehow or it lost a screw that was holding it in place. It's hard for me to tell since I did the inspection with the car on the ground.

The 2009 FSM shows the splash shield on page FAX-6. The splash shield is sandwiched between the steering knuckle and the wheel hub and bearing assembly.

danelonson · 05-17-2013, 09:35 PM

Thanks Southark. Yes this is exactly what's rattling. It doesn't look like it could come off on its own so either it got bent or it cracked. I have no idea how this could have happened.

SouthArk370Z · 05-17-2013, 10:43 PM

Quote:

Originally Posted by danelonson

Thanks Southark. Yes this is exactly what's rattling. It doesn't look like it could come off on its own so either it got bent or it cracked. I have no idea how this could have happened.

You're welcome.

It looks like the only way to remove it is to remove the hub/bearing ***'y. If it falls off, you have bigger problems than a splash shield.

My guess is that you ran over a limb, chunk of truck tire, or similar.

Going by the FSM, the hub/bearing looks similar to the setup on a mid-'90s Chevy FWD (minus the drive shaft) that a friend and I recently replaced. The job was amazingly easy once we got the right Torx wrench. If you have the proper tools, you can probably DIY.

danelonson · 05-20-2013, 04:37 PM

So today I decided to put my car on ramps and find out if my splash guard was cracked or bent. It turns out that it was fine. It was actually a small rock that somehow had gotten in between the splash guard and the rotor and was rattling around in there. As I pulled the splash guard, the rock just fell. What I thought was gonna be a huge dis-assembly turned out to be a 5 min fix.

blak max · 07-14-2016, 11:54 PM

ive had a metallic flapping (around the passenger front area)for the last few weeks..nothing was loose. so i thought it was the dip stick tube hitting the header..after reading this thread i checked the dust shield but it was fine.. then i did find the lower shock bolt was loose so hoping thats the issue

barncobob · 07-15-2016, 07:11 AM

heat shield got tweaked somehow

blak max · 07-15-2016, 02:30 PM

even though the dust shield doesnt look like its touching anywhere .i still have the noise... going to take the dust shield completely off and see what happens..

unijabnx · 07-27-2016, 10:57 PM

Quote:

Originally Posted by blak max

even though the dust shield doesnt look like its touching anywhere .i still have the noise... going to take the dust shield completely off and see what happens..

Is it anything like the noise I hear in mine?

https://www.youtube.com/watch?v=XmCDgJNBQdE

blak max · 07-28-2016, 11:16 AM

Quote:

Originally Posted by unijabnx

Is it anything like the noise I hear in mine?

https://www.youtube.com/watch?v=XmCDgJNBQdE

no...yours sounds like a wheel bearing..... i found the bolts on my drive shaft cv were loose...i haven't put it on the ground yet but hopefully its fixed with adding lock washers

osbornsm · 07-29-2016, 12:16 AM

If you have adjusted anything in the front suspension, check the brake splash shields against the rotors too. If they get close, could be rattle too.

blak max · 07-29-2016, 12:25 AM

Quote:

Originally Posted by osbornsm

If you have adjusted anything in the front suspension, check the brake splash shields against the rotors too. If they get close, could be rattle too.

i took the passenger dust shield off ..im going to check the other side tomorrow

Wakeskater02 · 11-24-2018, 10:01 AM

This is great everyone! Thanks for the help! I have this exact same rattle and it drives me nuts. If I go over a lane marker I hear it - this gives me hope, I am going to put the car up and see if I can take the wheel off and inspect all of the suggestions here. Thanks again!

2010 370z Pearl White, Base, just turned 34,000 miles.

05-20-2013, 04:37 PM	#22 (permalink)
danelonson Base Member Join Date: Apr 2012 Location: Florida Posts: 82 Drives: 12 370z 7AT Sport Rep Power: 13	So today I decided to put my car on ramps and find out if my splash guard was cracked or bent. It turns out that it was fine. It was actually a small rock that somehow had gotten in between the splash guard and the rotor and was rattling around in there. As I pulled the splash guard, the rock just fell. What I thought was gonna be a huge dis-assembly turned out to be a 5 min fix. SouthArk370Z, Drex and lfrz93 like this.

07-14-2016, 11:54 PM	#23 (permalink)
blak max Enthusiast Member Join Date: Apr 2014 Location: CFL Posts: 476 Drives: Ls swapped 370z Rep Power: 3369	ive had a metallic flapping (around the passenger front area)for the last few weeks..nothing was loose. so i thought it was the dip stick tube hitting the header..after reading this thread i checked the dust shield but it was fine.. then i did find the lower shock bolt was loose so hoping thats the issue __________________ LS 370Z ~ Fueled Racing ~ CSF radiator ~ Vis Racing ~ Braum Racing ~ SPLparts~ Vossen~Odessey Battery

07-15-2016, 02:30 PM	#25 (permalink)
blak max Enthusiast Member Join Date: Apr 2014 Location: CFL Posts: 476 Drives: Ls swapped 370z Rep Power: 3369	even though the dust shield doesnt look like its touching anywhere .i still have the noise... going to take the dust shield completely off and see what happens.. __________________ LS 370Z ~ Fueled Racing ~ CSF radiator ~ Vis Racing ~ Braum Racing ~ SPLparts~ Vossen~Odessey Battery

07-29-2016, 12:16 AM	#28 (permalink)
osbornsm A True Z Fanatic Join Date: Jun 2011 Location: WHAT Posts: 2,551 Drives: 2018 Camaro SS 1LE Rep Power: 424	If you have adjusted anything in the front suspension, check the brake splash shields against the rotors too. If they get close, could be rattle too. __________________ 2018 Camaro SS 1LE (455hp) - 2011 Nissan 370z (333hp) - 2004 VW R32 (240hp) - 2000 Civic Si (160hp)

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05-16-2013, 11:51 AM	#16 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141521	check for cats. i mean animal cats.

05-16-2013, 03:01 PM	#17 (permalink)
danelonson Base Member Join Date: Apr 2012 Location: Florida Posts: 82 Drives: 12 370z 7AT Sport Rep Power: 13	Cat heatshield rattled loose/off Seems like the OP on this thread had the same problem I'm having

05-17-2013, 08:16 PM	#18 (permalink)
danelonson Base Member Join Date: Apr 2012 Location: Florida Posts: 82 Drives: 12 370z 7AT Sport Rep Power: 13	I'm so happy I was able to find out where the rattling was coming from. Its coming from the passenger front dust shield behind the rotor. The dust shield taps against the rotor and caused the chatter. Can anyone tell me in which part of the service manual I can find how this dust shield is held on? I'm thinking either it got bent somehow or it lost a screw that was holding it in place. It's hard for me to tell since I did the inspection with the car on the ground.

05-17-2013, 09:35 PM	#20 (permalink)
danelonson Base Member Join Date: Apr 2012 Location: Florida Posts: 82 Drives: 12 370z 7AT Sport Rep Power: 13	Thanks Southark. Yes this is exactly what's rattling. It doesn't look like it could come off on its own so either it got bent or it cracked. I have no idea how this could have happened.

07-15-2016, 07:11 AM	#24 (permalink)
barncobob A True Z Fanatic Join Date: Sep 2015 Location: hangtown, CA Posts: 1,164 Drives: 16 370Z auto Rep Power: 590	heat shield got tweaked somehow

11-24-2018, 10:01 AM	#30 (permalink)
Wakeskater02 Base Member Join Date: Oct 2011 Location: Riverside Posts: 55 Drives: 2010 Pearl 370z Rep Power: 14	This is great everyone! Thanks for the help! I have this exact same rattle and it drives me nuts. If I go over a lane marker I hear it - this gives me hope, I am going to put the car up and see if I can take the wheel off and inspect all of the suggestions here. Thanks again! 2010 370z Pearl White, Base, just turned 34,000 miles.