Collapsed Motor Mount/Vibration - RX8Club.com

Go Back  RX8Club.com > Series I Tech & Performance > Series I Tech Garage
Reload this Page >

Collapsed Motor Mount/Vibration

Notices
Series I Tech Garage The place to discuss anything technical about the RX-8 that doesn't fit into any of the categories below.

Collapsed Motor Mount/Vibration

Old 02-03-2006, 09:51 AM
  #1  
Registered User
Thread Starter
 
dsorx's Avatar
 
Join Date: Jun 2004
Location: Coral Springs, FL
Posts: 31
Thanks: 0
Thanked 0 Times in 0 Posts
Collapsed Motor Mount/Vibration

Just got back from the dealer. Brought my '04 AT in for excessive vibration at idle. They said the right side motor mount was "collapsed" and needs to be replaced. However, there is 1-2 month backorder on the part because it seems that many others are having the same issue. I read abouth a few others who had this problem, but it must be many more to have the part backordered nationally. The part has to be freighted from Japan.
dsorx is offline  
Old 02-03-2006, 11:18 AM
  #2  
Registered Rep
 
Join Date: Jan 2005
Location: Largo, FL
Posts: 253
Thanks: 0
Thanked 0 Times in 0 Posts
That mount is located very close to part of the exhaust system. The extreme heat seems to be causing the part fail.
JonsToy is offline  
Old 02-03-2006, 11:46 AM
  #3  
Registered User
 
Join Date: Dec 2004
Location: N.J.
Posts: 16
Thanks: 0
Thanked 0 Times in 0 Posts
I had the same problem, had it replaced 5-6 months ago now it needs to be replaced agian. I haven't gone to the dealer yet, but my car idles like a 1978 pinto running on 1 cylinder!! Did they offer you a rental for the wait of the part?
silver bullet 53 is offline  
Old 02-03-2006, 12:05 PM
  #4  
Registered User
Thread Starter
 
dsorx's Avatar
 
Join Date: Jun 2004
Location: Coral Springs, FL
Posts: 31
Thanks: 0
Thanked 0 Times in 0 Posts
A rental for 1-2 months? Of course not. The vibration isn't too bad. Just a little annoying. I imagine it is going to get worse though.
dsorx is offline  
Old 02-03-2006, 12:12 PM
  #5  
Banned
iTrader: (3)
 
Join Date: Oct 2003
Location: Under my car
Posts: 16,386
Thanks: 0
Thanked 2 Times in 2 Posts
Just pull it, cut it open and drain the oil then fill it with 80-shore high-durometer two-part urethane and re-install.
It will never fail again.
MazdaManiac is offline  
Old 02-03-2006, 12:17 PM
  #6  
Registered User
 
Join Date: Dec 2004
Location: N.J.
Posts: 16
Thanks: 0
Thanked 0 Times in 0 Posts
It definitely will get worse, I can feel mine through the seat!!! It gets even worse when the A/C is on
silver bullet 53 is offline  
Old 02-03-2006, 02:06 PM
  #7  
DELIVERED 07-17-2004
 
Join Date: Jul 2004
Location: Dallas Area
Posts: 210
Thanks: 0
Thanked 0 Times in 0 Posts
There is a TSB for it. They will replace it with an improved mount, the new one has a heat shield. They replaced both of mine even though only one gets excessive heat.
Coop '04 is offline  
Old 02-06-2006, 09:23 PM
  #8  
Registered User
 
Join Date: Feb 2006
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Motor Mounts

I have a 2004 rx8 motor mounts on back-order....is this a recall I haven't been notified...Been over a Month...still waiting
nv04rx8 is offline  
Old 02-06-2006, 09:30 PM
  #9  
I don't buy Kool-Aid
 
DOMINION's Avatar
 
Join Date: Apr 2004
Location: Vegas Baby!
Posts: 8,823
Thanks: 0
Thanked 0 Times in 0 Posts
Yup me too. Its just one more reason to blast my Kenwood system
DOMINION is offline  
Old 02-06-2006, 10:36 PM
  #10  
FX8TED on my RX-8
 
khoney's Avatar
 
Join Date: Jul 2002
Location: San Antonio
Posts: 815
Thanks: 0
Thanked 0 Times in 0 Posts
Originally Posted by Coop '04
There is a TSB for it. They will replace it with an improved mount, the new one has a heat shield. They replaced both of mine even though only one gets excessive heat.
If there's a TSB, I'm not seeing it on our TSB link in the Issues and Problems section. Isn't that a comprehensive list?
khoney is offline  
Old 02-08-2006, 05:42 PM
  #11  
Go Texas Longhorns!
 
brillo's Avatar
 
Join Date: Apr 2003
Location: Houston, Texas
Posts: 1,818
Thanks: 0
Thanked 1 Time in 1 Post
Originally Posted by MazdaManiac
Just pull it, cut it open and drain the oil then fill it with 80-shore high-durometer two-part urethane and re-install.
It will never fail again.

How would you go about injecting the urethane? Just curious.
brillo is offline  
Old 02-08-2006, 05:53 PM
  #12  
Banned
iTrader: (3)
 
Join Date: Oct 2003
Location: Under my car
Posts: 16,386
Thanks: 0
Thanked 2 Times in 2 Posts
Originally Posted by brillo
How would you go about injecting the urethane? Just curious.
You don't inject really, you pour.
Take the old motor mount and cut the bottom cap off (it looks like a rubber dart board). When you do so, a few ounces of mineral oil will come out.
Dry it up and rinse with a solvent. Then mix up some flexible urethane with an 80 shore rating (go to http://www.mcmaster.com/ and search for product 8644K11). Set the motor mount on its top on a level surface and fill the cavity with the above mentioned urethane.
Let it sit for two days and then re-install it.
It will never collapse again. However, there will be a slight vibration penalty. If your car has a particularly rough idle, I wouldn't recommend this. But if it is smooth like mine, then there is no noticible difference.
MazdaManiac is offline  
Old 02-08-2006, 08:00 PM
  #13  
INDY RX8 CLUB - Officer
 
max5roadster's Avatar
 
Join Date: Jan 2005
Location: Nashville,IN
Posts: 321
Thanks: 0
Thanked 1 Time in 1 Post
There is not a TSB on this yet, but it is a "known" issue IIRC. My car is currently at the dealer for new mounts as well. Noticed the increase at about 21k.
04 6spd.
max5roadster is offline  
Old 02-08-2006, 09:18 PM
  #14  
road warrior
 
LionZoo's Avatar
 
Join Date: Feb 2006
Location: Oakland and Los Angeles, CA
Posts: 1,861
Thanks: 0
Thanked 1 Time in 1 Post
Do the new cars have the improved mounts straight from the factory?
LionZoo is offline  
Old 02-21-2006, 06:41 PM
  #15  
socal4ever2005
 
socal4ever2005's Avatar
 
Join Date: Sep 2005
Location: Orange County, California
Posts: 19
Thanks: 0
Thanked 0 Times in 0 Posts
I've got the same prob on my 05' automatic...I was looking for info on this! So glad I found this thread! It's going in for this as well as other probs next week...
socal4ever2005 is offline  
Old 02-21-2006, 08:00 PM
  #16  
Shifty Bastard.
 
Gomez's Avatar
 
Join Date: Feb 2004
Location: Melbourne, Australia.
Posts: 4,835
Thanks: 0
Thanked 0 Times in 0 Posts
Originally Posted by LionZoo
Do the new cars have the improved mounts straight from the factory?
Yes.
Gomez is offline  
Old 02-22-2006, 05:23 PM
  #17  
Registered User
 
Join Date: Aug 2004
Location: Farmington Hills, Michigan
Posts: 25
Thanks: 0
Thanked 0 Times in 0 Posts
i just got my rx8 fixed for this, they took a week to figure out what was wrong, made me take my car back for a week while the parts came in, then my car went back in for a week in order to put them on, much better now.
qdog145 is offline  
Old 02-22-2006, 05:44 PM
  #18  
Registered
iTrader: (3)
 
Join Date: Jul 2004
Location: Hilo, HI
Posts: 430
Thanks: 0
Thanked 0 Times in 0 Posts
Man I'm glad I'm not alone. My 04 AT started doing crazy vibrations 2000 miles ago too when idling in Drive and Reverse. On my last visit to the dealership about a month ago the techies noted the problem but didn't know what was causing it, all they did was submit the info to Mazda and said they'd get back to me. Haven't heard from them since. I'd love to see an official TSB to show them.
Vertigo-1 is offline  
Old 02-22-2006, 06:01 PM
  #19  
Registered User
Thread Starter
 
dsorx's Avatar
 
Join Date: Jun 2004
Location: Coral Springs, FL
Posts: 31
Thanks: 0
Thanked 0 Times in 0 Posts
A week!

Originally Posted by qdog145
i just got my rx8 fixed for this, they took a week to figure out what was wrong, made me take my car back for a week while the parts came in, then my car went back in for a week in order to put them on, much better now.
You got them in only a week? They told me 1 to 2 months to get the mounts since they are on backorder and have to be shipped from the factory in Japan. I bet they never call.
dsorx is offline  
Old 02-26-2006, 12:45 PM
  #20  
Registered User
 
Join Date: Feb 2006
Posts: 12
Thanks: 0
Thanked 0 Times in 0 Posts
out of curiousity, my car is running a little rough, how do I know if the idle is just set too low or if its the engine mount?
The minute I start driving the vibration stops. what is the sitting still idle supposed to be at? I have a 2004 AT. I'm running at just a little under 1000RPM when still.
And if I need to adjust the idle where do I find the idle adjuster?
thanks
dee
DeeDeej is offline  
Old 02-26-2006, 02:30 PM
  #21  
Registered
 
Go48's Avatar
 
Join Date: Jul 2004
Location: Fayetteville, PA
Posts: 2,593
Thanks: 0
Thanked 0 Times in 0 Posts
Originally Posted by DeeDeej
out of curiousity, my car is running a little rough, how do I know if the idle is just set too low or if its the engine mount?
The minute I start driving the vibration stops. what is the sitting still idle supposed to be at? I have a 2004 AT. I'm running at just a little under 1000RPM when still.
And if I need to adjust the idle where do I find the idle adjuster?
thanks
dee
"The idling speed cannot be adjusted", believe it or not. (See the attached page from the shop manual.) Your idle speed is probably OK according to what you say. A minor amount of vibration at idle is normal. If it is extreme, you should have it checked out.
Attached Thumbnails Collapsed Motor Mount/Vibration-idlespeed.jpg  
Go48 is offline  
Old 03-07-2006, 10:12 AM
  #22  
Registered User
 
Join Date: Feb 2006
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
I just got my '04 back after the collapsed mount problem was fixed. It is now a recall item and the service manager knew all about it. He also knew about the problems with a national back order on the part. He told me it was the part for the automatics, they had the one for the manual transmission rx's in stock. They replaced the part, cleaned my injectors and did a couple of little things on the same day.

Purrs like a kitten...

W.
wallywld is offline  
Old 03-07-2006, 10:13 AM
  #23  
Registered User
 
Join Date: Feb 2006
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
DeeDeej:

Those are exactly the symptoms I had in my car. It was the mount.
wallywld is offline  
Old 03-08-2006, 06:42 PM
  #24  
North County Boi
 
stangmatt66's Avatar
 
Join Date: Sep 2003
Location: The OC
Posts: 232
Thanks: 0
Thanked 0 Times in 0 Posts
OMG, I've been fighting with this vibration for almost 10k miles!!! I never knew what was wrong! I always read for TSBs, but I guess this problem isn't important enough yet. Thanks guys for posting this! Back to the dealer I go!
stangmatt66 is offline  
Old 03-08-2006, 08:48 PM
  #25  
Student Driver
 
EyeBall Fixer...(o)(x)'s Avatar
 
Join Date: Jul 2004
Location: Kansas
Posts: 962
Thanks: 0
Thanked 0 Times in 0 Posts
Took 7 weeks to get mine. Replaced both sides plus got a new 9V starter and battery upgrade.
As good as new....well, at least until something else goes el-wacko
EyeBall Fixer...(o)(x) is offline  

Thread Tools
Search this Thread
Rate This Thread
Rate This Thread:
You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: Collapsed Motor Mount/Vibration


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.