vibration at 70mph - Mustang Evolution

Go Back   Mustang Evolution > 1979-2015 Mustang GT || Tech and Talk > 1979-1995 Mustang GT



Reply
 
Thread Tools Search this Thread
Please support our sponsors and let them know you heard about them here!
Old 02-13-2013, 09:38 AM   #1
Registered Member
Regular
 
captain78's Avatar
 
Join Date: Dec 2011
Region: Louisiana
Posts: 851
vibration at 70mph

Ok i have a god awful vibration when i reach 70 mph really its only between 70-85mph weather im accelerating or braking any ideas driveshaft is tight all looks good just can't figure it out but was told that if i go with a aluminum driveshaft should solve my issue was also told it could be because i pulled that big chunk of iron off the rearend when i did my gears
captain78 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 02-13-2013, 09:42 AM   #2
Road Trip!
 
Join Date: Jan 2012
Region: Illinois
Posts: 776
I had that once and it was a bad tire.
JayKranz is offline   Reply With Quote
Old 02-13-2013, 09:51 AM   #3
Registered Member
Regular
 
captain78's Avatar
 
Join Date: Dec 2011
Region: Louisiana
Posts: 851
It was a thought but does it with other tired on it weather my street tires or my slicks
captain78 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 02-13-2013, 10:04 AM   #4
Road Trip!
 
Join Date: Jan 2012
Region: Illinois
Posts: 776
Hmm yeah maybe balancing then.
JayKranz is offline   Reply With Quote
Old 02-13-2013, 01:26 PM   #5
Registered Member
Regular
 
Billymich's Avatar
 
Join Date: Oct 2012
Location: Chicago
Region: Illinois
Posts: 861
I have the same thing, bought new tires balanced no luck. Got an alignment no luck. Im thinking its my driveshaft too, so let me know.
Billymich is offline   Reply With Quote
Old 02-13-2013, 01:32 PM   #6
Registered Member
Regular
 
captain78's Avatar
 
Join Date: Dec 2011
Region: Louisiana
Posts: 851
Billy do you still have that big dampener on your rearend chunk
captain78 is offline   Reply With Quote
Old 02-13-2013, 01:38 PM   #7
Registered Member
Regular
 
Billymich's Avatar
 
Join Date: Oct 2012
Location: Chicago
Region: Illinois
Posts: 861
Where should I look?
Billymich is offline   Reply With Quote
Old 02-13-2013, 01:48 PM   #8
Registered Member
Regular
 
captain78's Avatar
 
Join Date: Dec 2011
Region: Louisiana
Posts: 851
Right under chunk where driveshaft connects to rearend
captain78 is offline   Reply With Quote
Old 02-13-2013, 01:58 PM   #9
Registered Member
Regular
 
Billymich's Avatar
 
Join Date: Oct 2012
Location: Chicago
Region: Illinois
Posts: 861
Ill go check.
Billymich is offline   Reply With Quote
Old 02-13-2013, 02:13 PM   #10
Registered Member
Regular
 
Billymich's Avatar
 
Join Date: Oct 2012
Location: Chicago
Region: Illinois
Posts: 861
Im out of state, so I couldn't get the car lifted, but it feels like driveshaft, u-joint then the input for the rearend, There is somesort of D-ring style (not an actual d-ring ) bracket under the area just after the ujoint. Ill take another look when I have me some tools...
Billymich is offline   Reply With Quote
Old 02-13-2013, 02:21 PM   #11
Registered Member
Regular
 
captain78's Avatar
 
Join Date: Dec 2011
Region: Louisiana
Posts: 851
Oh you couldn't miss it its about the size of a small basket ball and weights something like 15-20lbs bolted to front of rearend if you don't have it that could be your problem just like me.

---------- Post added at 03:21 PM ---------- Previous post was at 03:21 PM ----------

Or at least i was told that could be my problem
captain78 is offline   Reply With Quote
Old 02-13-2013, 02:27 PM   #12
Registered Member
Regular
 
Billymich's Avatar
 
Join Date: Oct 2012
Location: Chicago
Region: Illinois
Posts: 861
Quote:
Originally Posted by captain78 View Post
Oh you couldn't miss it its about the size of a small basket ball and weights something like 15-20lbs bolted to front of rearend if you don't have it that could be your problem just like me.

---------- Post added at 03:21 PM ---------- Previous post was at 03:21 PM ----------

Or at least i was told that could be my problem
Someone swapped my gears too, and theres evidence of hack work all over my car so who knows... id be interested to see a pick of it.
Billymich is offline   Reply With Quote
Old 02-13-2013, 02:40 PM   #13
Registered Member
Regular
 
Finchms's Avatar
 
Join Date: Jan 2012
Region: Georgia
Posts: 208
Quote:
Originally Posted by captain78 View Post
Ok i have a god awful vibration when i reach 70 mph really its only between 70-85mph weather im accelerating or braking any ideas driveshaft is tight all looks good just can't figure it out but was told that if i go with a aluminum driveshaft should solve my issue was also told it could be because i pulled that big chunk of iron off the rearend when i did my gears
I would try the balancing on your tires first. If u jack up the back and run it with tires off ground n have someone just look at the driveshaft to see if it has any wooble or take it out n put a level on it and see if its bent like that. For the chunk of steel thats bolted to the front of the rearend, i have no problems out pf mine. I didn't put mine back on after gear swap but not to say thats not your problem.
Finchms is offline   Reply With Quote
Old 02-13-2013, 03:09 PM   #14
Registered Member
Regular
 
Cobrarunnin9s's Avatar
 
Join Date: Apr 2011
Region: Missouri
Posts: 218
Could be a wheel bearing. I had a real bad vibration on decel, change tires and it went away some. Put the car on a lift and drove it, passenger wheel was moving alot. Felt like I was gonna drive off the lift at only 30 mph.
Cobrarunnin9s is offline   Reply With Quote
Old 02-13-2013, 03:22 PM   #15
Registered Member
Regular
 
captain78's Avatar
 
Join Date: Dec 2011
Region: Louisiana
Posts: 851
All my stuff if brand new because i been goin through the basics trying to get rid of it new bearings balance both sets of tires only thing i fidnt do yet is balance the driveshaft
captain78 is offline   Reply With Quote
Old 02-13-2013, 03:27 PM   #16
Registered Member
Regular
 
Finchms's Avatar
 
Join Date: Jan 2012
Region: Georgia
Posts: 208
Quote:
Originally Posted by captain78 View Post
All my stuff if brand new because i been goin through the basics trying to get rid of it new bearings balance both sets of tires only thing i fidnt do yet is balance the driveshaft
Take it out and check to see if its straight. Only 4 bolts and its out.
Finchms is offline   Reply With Quote
Old 02-13-2013, 03:42 PM   #17
Registered Member
Regular
 
captain78's Avatar
 
Join Date: Dec 2011
Region: Louisiana
Posts: 851
That's what Im thinking Im gonna do this week
captain78 is offline   Reply With Quote
Old 02-15-2013, 11:09 PM   #18
Registered Member
Regular
 
Ronn501's Avatar
 
Join Date: Feb 2013
Location: Little rock
Region: Arkansas
Posts: 62
I've had that problem but it was a bad throwout bearing if u have a stick
Ronn501 is offline   Reply With Quote
Old 02-16-2013, 12:57 AM   #19
Road Trip!
 
Join Date: Apr 2011
Region: Indiana
Posts: 8,044
Have you removed the driveshaft before? If you don't mark it so it goes back on in the same orientation it can cause a vibration.
dreamstang is offline   Reply With Quote
Old 02-16-2013, 02:42 AM   #20
Registered Member
Regular
 
Billymich's Avatar
 
Join Date: Oct 2012
Location: Chicago
Region: Illinois
Posts: 861
My throwout bearing is whining so could that be it? Will a haynes manual instruct me? any advice?
Billymich is offline   Reply With Quote
Old 02-16-2013, 05:07 AM   #21
Road Trip!
 
Join Date: Apr 2011
Region: Indiana
Posts: 8,044
Quote:
Originally Posted by Billymich
My throwout bearing is whining so could that be it? Will a haynes manual instruct me? any advice?
Yes it can. You have to pull the trans to do it. Once u pull the trans its self.explanatory really.
dreamstang is offline   Reply With Quote
Old 02-16-2013, 12:12 PM   #22
Registered Member
Regular
 
Billymich's Avatar
 
Join Date: Oct 2012
Location: Chicago
Region: Illinois
Posts: 861
Ok, at the moment my tools include a 355 piece socket/wrench set, two jackstands, a jack and an oil catch. I have a manual, my question is, should I take it to a shop to rent bay/lift time where they have techs and tools? I could also do it in my garage, if so what else will I need minimum? what else should I do while I have the trans pulled? I noticed oil coming from where the shifter goes in, also my rear main is leaking. should I try to rebuild my tranny while its out? How much would a shop charge to replace a throwout bearing alone? Thanks guys and sorry for commandeering this thread ^_^
Billymich is offline   Reply With Quote
Old 02-16-2013, 12:26 PM   #23
Road Trip!
 
Join Date: Apr 2011
Region: Indiana
Posts: 8,044
Quote:
Originally Posted by Billymich
Ok, at the moment my tools include a 355 piece socket/wrench set, two jackstands, a jack and an oil catch. I have a manual, my question is, should I take it to a shop to rent bay/lift time where they have techs and tools? I could also do it in my garage, if so what else will I need minimum? what else should I do while I have the trans pulled? I noticed oil coming from where the shifter goes in, also my rear main is leaking. should I try to rebuild my tranny while its out? How much would a shop charge to replace a throwout bearing alone? Thanks guys and sorry for commandeering this thread ^_^
Pulling the trans is a pretty simple job. A long extension and swivel will help getting the top bolts out. But I would get the car as high as possible to make it easier. I usually hold up the tranny with a jack. Then I slide under it. I will put the tailshaft on the h pipe. Then slide it onto my chest, then the ground. Who needs a tranny jack eh?

One other thing to be aware of is it will leak fluid out of the tail shaft. You can by these little push in plugs at the auto store for a couple dollars. I usually just get a plastic bag and use electrical tape. Slide the bag over the tail and tape the snit out of it. I usually only loose a few drops this way.

If your clutch is old I would go ahead and upgrade. But I would at least change the tob and pilot bearing. If your flywheel is crystallized or gulled I would replace or get it resurfaced. I usually scuff it up with some Emory clothe.
dreamstang is offline   Reply With Quote
Old 03-16-2013, 11:18 PM   #24
Registered Member
Regular
 
captain78's Avatar
 
Join Date: Dec 2011
Region: Louisiana
Posts: 851
Swaped drive shafts no more vibration good deal now for get rid of a couple more bugs
captain78 is offline   Reply With Quote
Old 03-17-2013, 04:27 PM   #25
Registered Member
Regular
 
Billymich's Avatar
 
Join Date: Oct 2012
Location: Chicago
Region: Illinois
Posts: 861
I just got my tranny out today, What should I replace? The rubber at the back of the transmission is cracked whats that called? Also, i have 4.10 rears and I just bought a cheap O'rieleys clutch I am dead broke though, is that going to be ok?? At the moment I was going to replace my clutch, TOB, Pilot Bearing, some of the hardware (what would you recommend replacing ) and my engine side u-joints. What else should I do??
Billymich is offline   Reply With Quote
Old 03-18-2013, 06:40 AM   #26
Registered Member
Regular
 
Billymich's Avatar
 
Join Date: Oct 2012
Location: Chicago
Region: Illinois
Posts: 861
any help here guys>?
Billymich is offline   Reply With Quote
Old 03-18-2013, 07:00 AM   #27
Registered Member
Regular
 
captain78's Avatar
 
Join Date: Dec 2011
Region: Louisiana
Posts: 851
You should change the transmission mount. Rear seal on tranny pressure plate throw out bearing front joint get flywheel turned and clutch fork if needed those for sure that's what i changed when i did mine last month

---------- Post added at 07:00 AM ---------- Previous post was at 06:58 AM ----------

And as for cheap clutch sometimes i recommend the cheap one because of application and person. Driving because what would you rather have the clutch slip or tranny explode
captain78 is offline   Reply With Quote
Old 03-18-2013, 11:48 AM   #28
Registered Member
Regular
 
nickcap's Avatar
 
Join Date: May 2011
Posts: 245
I think you need a balance and alignment also check to see if your rotors are balanced!
__________________
1995 Mustang GT Convertible!! (My Baby Monique) Ha
nickcap is offline   Reply With Quote
Reply

Lower Navigation
Go Back   Mustang Evolution > 1979-2015 Mustang GT || Tech and Talk > 1979-1995 Mustang GT

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 On
Refbacks are Off


» Like Us On Facebook



08:42 AM


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0

MustangEvolution.com is in no way associated with or endorsed by Ford Motor Company.