Does this sound familiar to anyone? - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


General Miata Chat A place to talk about anything Miata

Reply
 
 
 
LinkBack Thread Tools
Old 04-16-2015, 02:28 PM   #1
Junior Member
Thread Starter
 
Join Date: Jan 2014
Location: Port Saint Lucie,FL
Posts: 418
Total Cats: 3
Default Does this sound familiar to anyone?


I've had the car up in the air twice now, trying to figure this one out. Problem is, it only lasts for a few minutes and then goes away. It makes it when I'm letting my foot off the clutch in gear, but mostly when decelerating while in gear. It sounds like it is eminating from under the center of the car. At first it sounded like it was coming from the exhaust (dumps under center of the car), so I thought the turbo was causing the noise. Changed the CHRA, and that was a waste... has anybody heard a noise like this before? Maybe u joints? Clutch related? Trans related?
Mech5700 is offline   Reply With Quote
Old 04-17-2015, 08:18 AM   #2
Moderator
iTrader: (11)
 
sixshooter's Avatar
 
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 15,677
Total Cats: 1,561
Default

Inspect drive shaft for rubbing, u-joints for wear, CV axles for rubbing (possibly against exhaust), e-brakes dragging slightly, warped rear rotors causing ungreased caliper pins to squeak as the calipers move across them, rotors or wheels rubbing brake splash shield, wheel bearing allowing excess movement causing one of the above, bent or loose wheel causing rubbing against something, or something else. It is obviously road-speed related so it will be a road speed related component.
sixshooter is online now   Reply With Quote
Old 04-17-2015, 08:39 AM   #3
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,892
Total Cats: 1,792
Default

cant hear over your lack of a muffler.
Braineack is offline   Reply With Quote
Old 04-17-2015, 10:49 AM   #4
Newb
 
Join Date: Jan 2012
Posts: 9
Total Cats: 0
Default

it sounds like warning for worn out brake pads
dexterJr is offline   Reply With Quote
Old 04-17-2015, 11:16 AM   #5
Newb
 
Join Date: Aug 2014
Location: Connecticut
Posts: 33
Total Cats: -3
Default

I had a similar noise to this when i first lowered my car, it was the axles rubbing on the collars of the coilovers. Maybe not your issue if your not on coilovers but worth a check
Backwoodsballer is offline   Reply With Quote
Old 04-17-2015, 11:35 AM   #6
Junior Member
iTrader: (4)
 
Join Date: Jun 2013
Location: Dallas TX
Posts: 149
Total Cats: -3
Default

When did the noise start?
Baker99miata is offline   Reply With Quote
Old 04-17-2015, 02:19 PM   #7
Junior Member
Thread Starter
 
Join Date: Jan 2014
Location: Port Saint Lucie,FL
Posts: 418
Total Cats: 3
Default

When I was under the car, I was at my shop, my guy was in it going thru the gears to make the noise occur. I ruled out wheel bearings (no play), brakes (a few thousand miles on them and I greased the pins), ebrake (still does it with it when engaged during testing), and axles are clear from rubbing.


The noise started a few weeks ago, nothing was changed before it started. Literally heard it one morning on my way to work and has been the same since.

It clearly is under the center of the car when I'm standing underneath it. I've found a few threads from a while back about u joint noises but all the links for the videos are dead... was hoping someone would be like "hey I had that same noise and it was xxxx!"

I think my next step is to pull the driveshaft and feel the u joints.

If the u joint is the cause, I'm likely going to replace the driveshaft. Any reason to go for a serviceable $300 949 or FM one over a used one for $140?
Mech5700 is offline   Reply With Quote
Old 04-17-2015, 02:23 PM   #8
Elite Member
iTrader: (3)
 
concealer404's Avatar
 
Join Date: Aug 2011
Posts: 8,465
Total Cats: 783
Default

Well, the serviceable one is serviceable.
concealer404 is offline   Reply With Quote
Old 04-17-2015, 02:30 PM   #9
Junior Member
Thread Starter
 
Join Date: Jan 2014
Location: Port Saint Lucie,FL
Posts: 418
Total Cats: 3
Default

Are those joints any stronger than OE? I'm at 259 whp now, and will go for 300 when I get my other, built motor in.
Mech5700 is offline   Reply With Quote
Old 05-03-2015, 07:33 PM   #10
Junior Member
Thread Starter
 
Join Date: Jan 2014
Location: Port Saint Lucie,FL
Posts: 418
Total Cats: 3
Default

Finally figured it out! It was the front u-joint. I picked up a used shaft from TCM and swapped it in today. This is what the original one sounds like when applying some twist to it and working it back n forth. Funny thing is, is it has no play and I can't make it squeak by hand when it was in the car. Only made the noise when accelerating in reverse, and decelerating in gear. Went away in a few minutes.

Mech5700 is offline   Reply With Quote
Old 05-03-2015, 08:26 PM   #11
Elite Member
 
Chiburbian's Avatar
 
Join Date: Feb 2008
Location: Gilberts, IL
Posts: 2,158
Total Cats: 131
Default

Nice. To me that is a totally atypical drive shaft failure. I have never seen one squeak like that. I have had the needle bearings fail which causes a knocking sound, but never a squeak.
Chiburbian is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Buzzing from driver side of engine bay? (MS3 install) nick470 MEGAsquirt 7 06-16-2017 02:53 PM
Low oil pressure after 1.8 swap and new turbo setup JesseTheNoob DIY Turbo Discussion 15 09-30-2015 03:44 PM
"Chimney Ethanol" E100 MiataGarage Engine Performance 5 09-30-2015 12:04 AM
Are my coils failing? viriiguy General Miata Chat 5 09-28-2015 08:39 PM
Twin Walbros, one pump louder than the other patsmx5 General Miata Chat 6 09-25-2015 02:47 PM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 05:52 PM.