vibrations!!!????!!!

ddt347

New Member

Jan 30, 2012

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nw pa

Feb 4, 2012

#1

• Feb 4, 2012

• #1

i have a 1988 lx with 5.0 and it has a borg-warner 5spd, my issue is it has a viberation i cannot pinpoint for the life of me! i checked u-joints they are good look new, trans. mounts are good crossmember mounts are a few months old,(so i was told i just got the car a week ago) any time i reach 45-50 mph it viborates like its in the driveline somewhere,even when i am at those speeds and put the car in neutral it continues to do it till i am down below 45mph. i dont know alot about these cars so any input would help!! thanks!

 

Adams91LX

Active Member

Dec 9, 2003

689

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Plano, TX

Feb 4, 2012

#2

• Feb 4, 2012

• #2

I would guess driveshaft is out of balance... FRPP makes a really nice aluminum one. Also, make sure the tires are balanced.

 

ddt347

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Jan 30, 2012

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nw pa

Feb 4, 2012

#3

• Feb 4, 2012

• #3

Adams91LX said:

I would guess driveshaft is out of balance... FRPP makes a really nice aluminum one. Also, make sure the tires are balanced.

Click to expand...

ok thanks i will take the driveshaft in to see if it out of balance if it is i will just buy a new one, as far as tires go i will have those checked as well thanks!!!

 

LilBerx

Active Member

Jan 11, 2012

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Feb 4, 2012

#4

• Feb 4, 2012

• #4

Sounds like a tire is out of balance to me...

 

ID89GT

10 Year Member

May 26, 2008

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Spokane Valley, WA

Feb 4, 2012

#5

• Feb 4, 2012

• #5

Maybe a harmonic balancer as well. But probably not because I imagine it would be more rpm specific rather than mph specific when it happens..

 

NIKwoaC

中國製造

15 Year Member

Oct 31, 2006

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Feb 4, 2012

#6

• Feb 4, 2012

• #6

Viberations? Viborates? Haha, I'm not usually a spelling Nazi, but come on, man.

 

Reactions: 88LX5.Oh

jsw81

5 Year Member

Mar 19, 2007

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IA

Feb 4, 2012

#7

• Feb 4, 2012

• #7

viberations

viberations

viberations






























VIBERATIONS

 

Reactions: 88LX5.Oh, ID89GT and 1991notchbackLX

wythors

Get off my lawn!!!

Founding Member

May 17, 2000

2,277

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69

C Addle

Feb 4, 2012

#8

• Feb 4, 2012

• #8

The first, quickest and cheapest check is to have the tires checked for balance and out of round. A rear tire with either of those conditions will cause vibrations similar to a driveline problem.

 

1991notchbackLX

Active Member

Dec 25, 2007

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New York

Feb 4, 2012

#9

• Feb 4, 2012

• #9

VIBERATOR VIBORATOR

 

CarMichael Angelo

my rearend will smell so minty fresh,

15 Year Member

Nov 29, 1999

10,641

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Birmingham, al

Feb 5, 2012

#10

• Feb 5, 2012

• #10

glad 2C it's not just me.

 

S&B

I hate my CT. :(

10 Year Member

Dec 18, 2005

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Cheesehead

Feb 5, 2012

#11

• Feb 5, 2012

• #11

put the car up on jack stands and run them up to 20 or 30 and see whats happening with the rear tires. I would remove them first then put the car up to 45 if the problem is there its obviously not the tires, if its gone its probably the tires. but under load things can change.

 

ddt347

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Jan 30, 2012

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nw pa

Feb 5, 2012

#12

• Feb 5, 2012

• #12

well first off i know my spelling sucks!!! hahahaha!!! but ya i thought the vibration was the u-joints being that when i accelerateits not there till i get to a steady cruise or when i let off to slow down its there well its worse it still vibrates when climbing speeds but it is worse when i steady the speed or let off the go pedal. but i will put it up on stands and see what happens with out the tires on! thanks!

 

ddt347

New Member

Jan 30, 2012

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nw pa

Feb 19, 2012

#13

• Feb 19, 2012

• #13

well it seems i got a car that is in need of some help! so i am just gonna start from scratch and and pull the motor trans, and rear! fix the strut towers motor is fine it is a new rebuild 4000 miles ago but the trans. is in need of some tlc and so is the rearend i just bought all newupper and lower control arms and torque box reinforcments new rear shocks and new front struts i did notice the motor mount on the passenger side is beyond shot so i was gonna buy all new motor and trans mounts any suggestions if i should go with solid mounts or poly?

 

S&B

I hate my CT. :(

10 Year Member

Dec 18, 2005

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Cheesehead

Feb 19, 2012

#14

• Feb 19, 2012

• #14

poly or rubber

 

Adams91LX

Active Member

Dec 9, 2003

689

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Plano, TX

Feb 19, 2012

#15

• Feb 19, 2012

• #15

love my poly motor and trans mounts.

 

bentley429isBAC

10 Year Member

Jul 23, 2009

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CT

Feb 19, 2012

#16

• Feb 19, 2012

• #16

solids

 

ddt347

New Member

Jan 30, 2012

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nw pa

Feb 23, 2012

#17

• Feb 23, 2012

• #17

well i will proly go with ploy mounts to see how they are, also like i said in my previous post this car needs work so i ran into another issue, the car is an 88 and has been converted to mass air flow, it seems to hesitate when cruising around 2000 rpm or less any higher and it clears up and runs fine, throttle response is awsome power is all there first gear is a waist of time second just insain tire spin and third your pressed into the seat so its not lacking timing is set at 15 degrees base the motor was built before i got i know its cammed, i had a few people tell me its the cam that makes it do that but i highly doubt that being i have never had a car that was cammed sounds like it misses wen cruising at 2000 rpm and less i tested the tps and its good, i thought it was the iac being that when i start it when its cold the rpm's drop off and pick back up like its surging but after it warms up it idles fine, any ideas?

 

88LX5.Oh

15 Year Member

Dec 30, 2011

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Arkansas

Feb 23, 2012

#18

• Feb 23, 2012

• #18

http://www.energysuspensionparts.com/products.asp?cat=Ford+Mustang+1988

I got all my mounts from Energy Suspension.

 

MikeH686

Mine is only two inches though.

10 Year Member

Oct 11, 2011

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Waldorf, MD

Feb 24, 2012

#19

• Feb 24, 2012

• #19

Sounds like a bulge in the tire from a broken band or however you call it

 

Illuminator

Active Member

Nov 29, 1999

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So. Cal

Feb 26, 2013

#20

• Feb 26, 2013

• #20

Not sure yet but think I know what is plaguing my 5.0 with vibes at higher rpm's. Previous owner did a rear disk changeover, and badly I might add. Axles were wrong and calipers were mounted incorrectly to start, but I just read about hub-centric rotors and realized that the rotors out back are drilled out 4-lug, and seeing as how I installed new axles and the correct caliper mount, the rotor is more than likely the culprit, as the only vibration that really bothers me is not the ones from solid mounts, etc... but the ones when roasting the tires or smoking through 2nd & 3rd at higher r's. Anyone know of fairly decent quality rotors I could use for this? It's been awhile since I messed with it.