Everytime i drive faster than 80MPH and UP my car seems to vibrate. i swapped a manual rack and steering my friends dad did it for me. I swapped the manual steering rack and pinion, because my power steering was going bad and the old one was really bad. IDK it seems find and it was installed good i geuss, but the manual steering rack was used so it came off from another car. 80MPH and below seems to be fine, but 90 etc higher the car seems to make loud vibrations and noise.

what may be the problem? does all manual steering does that? or what else could be the problem?

 

yes all the manual racks Wont allow you to go over 80mph(sarcasm).....no check your tie rods and ball joints. That will smooth out the ride. Do an alignment too. an alignment off will make if vibrate

 

Also check on your axle's.

 

why drive over 80mph.

 

Does it vibrate even when in neutral? If so, it's almost definately not the axle. Lift the car, grab each tire and try to wiggle it side to side and top to bottom. If it wiggles then you have a worn suspension component. Don't try to get the car aligned unless you fix any faulty suspension parts before or during your visit to the shop. Have you tried cross rotating the tires?

 

I'm going to guess it's CV-shaft related, but worn CV-shafts/joints usually cause vibration at lower speeds like 30-60mph, so it would very easily be alignment related, or even tire wear pattern related. Hm.

 

wheel bearings was my case a couple weeks ago

 

so manual racks are no good for higher speeds?

 

I have really old tires, new CV axles last month ago and even before i still had the symptoms at higher speeds? Also i noticed one of the ball joints bursted. IDK
what really would be the likely cause, wheel bearings, need allignment, new tires, ETC. or is that the way manual steering are at higher speeds?

diagnosing the point is what im more concerned of, but just beginner changing everything would be the last idea, but
is that normal for them manual steering

 

get your tires highspeed balanced. or if they are cheap tires if could be the design of them causing vibrations at high speeds.
my car vibrated until i put my new rims on at any speed (garbage walmart tires where on the car before i got it)

 

definately sounds like a tire problem

 

Tire balance problem my nucca!

 

id say a tire has a knot in it, if they were out of balance it would shake at around 55mph, and its not a wheel bearing, they make noises at all speeds. cant be axles cuz they were just replaced. id say its tires. out of alinment mostly causes the car to pull to one side or wear tires oddly. i used to work at a garage tires was my job..lol

 

an alignment will NOT make your car vibrate. stop saying that in every thread!

There are only two possibilities that an alignment will possible make your car shake.. one being negative caster.. and if you have negative caster you have way bigger problems then a shake. no cars come from the factory with negative caster.

the other possible issue is that your alignment is off..wearing your tires unevenly. the tires themselves will become unbalanced due to this. but then again...the problem is balancing and the issue is alignemnt.

think about the alignment angles for a second...all they really do is help tire wear and handling. if camber is way out..it wont make it shake. if toe is way out..you will have a crooked wheel. how can that make it shake?

 

X2
I don't know how many times people post that an alignment is causing their vibration - FTL

 

please dont say "YOUR WHEELS ARE SCREAMING FOR A WHEEL BALANCE"

i have the same problem, whenever going 75 - 80

same guys here ASSUMED and replied very quickly that its SCREAMING FOR A WHEEL BALANCE

its not a WHEEL BALANCE issue

 

it is wheel balance nucca.

let me break it down for you.. these are the only things that can cause a vibration.

wheel bearing- doenst vibrate, would normally make noise first like a growling effect. might be considered wheel bearing vibration since you hear a growling sound. it it would be bad normally they will make noise from 20mph up and they will keep getting louder and louder like a jet taking off. they will sometimes change pitch of sound when turning.

halfshaft issue- normally they would vibrate but on accel and deccel. if they are bad enough to vibrate then they would be bad enough for torque steer. sometimes confused with motor mounts. sometimes they click while turning for out joint being bad and inner joints clunk while deccel and accel if bad.

motor mount- this would shake the car if you have some stiff ones... if they are soft then the motor could clunk on accel and deccel.. might get some nasty torque steer as well

alignment- this will not cause a vibration unless you have negative caster.

front end loosness- balljoints, tie-rods inner and outer. these in itself will not cause a vibration. if you have loose front end parts then all they do is kick to the extreme part of the looseness until they kick to the min. part of the looseness. they normally change like this during accel or deccel or somesort of suspension movement. they do not shake back and forth driving down a straight level road. if you hit a bump (suspesnion travel) they could vibrate back and forth but it will be a ripple effect that will stop vibrating shortly after.

balncing issue- bent rim, knot in tire, tire hop and even fix-a-flat inside tire. if a tire is out of balance then it would shake at highway speeds only. 55+. this is the number one cause of highway speed vibrations. if your wheel shakes..then it is front tire. if your *** shakes..then it is rear tire balancing issue.

slip belt in tire- these are low speed vibrations and can be described as a wobble. 10-30 mph wobble.

brake rotor- these would cause vibrations while braking only. if the wheel shakes while braking then it possibly could be front. if the pedal shakes while braking then it could be the rear (rotors only...) lighlty pull the ebrake to see if the rear wobbles.

thats it...that is all i can think of that can possibly cause a vibration. it does scream wheel balance when someone says "my car shakes at 65 mph"

 

I had same problem it was the bushing on control arm....see if ur tire can be tilted inward and outward if so BAM.

Does it do it worse when you hit the brakes?

 

my steering wheels shake on 60+mph with my set of gsr starfish(295-50-15)
got it balanced, aligned, still doesit

changed to 14" donuts, runs perfectly straight

 

exactly.. some tires and rims are hard to balance. 295-50-15 is quite a wide tire. and i bet you didnt wnat weights on the outside lip which equals an even harder time for the tech to balance them properly.

moral of this quote... just because your rims and tires are balanced..doesnt mean they actually are!

 

this in itself wont be a constant vibration at speed. mayeb once you decel or accel or hit a bump.. but no way your vibration was consistent all the time 100 percent of teh time on staright roads!

 

that only pertains to speed balance, if using bubble balance it doesnt matter what side you put the weights...

 

never heard of bubble balance. im goign to guess that bubble balancing is the same as static balancing. static balancing in itself is not a perfect balance. it is harder to static balance a tire. not harder in means of labor wise... but harder in means of truly balancing the tire. the farther out the wheel weights the better your balance will be.

 

i think it might be your speed limiter.. telling you youre going to fast.. LoL..


no but.. before you did the swap. did it vibrate..??

 

My 89 EF hatch vibrated badly over 70MPH. It was a harmonic vibration that would show up for about 10 seconds then disappear for 10 seconds then come back. I changed axles, wheels, tires, had alignments and balances done over and over. Everything under the car was brand new including poly bushing kit, balljoints, inner and outer tie rod ends, rack bushings, brakes, bearings etc. Nothing changed the vibration in any way. I bought JDM EF, the car drove fine at any speed, i swapped everything out of the usdm civic into the jdm civic and presto the vibration is back in the new chassis. Ive seen people post threads like this one all the time. There has just got to be something else that is causing this problem. FYI I am using Avid traction bars and DA Integra knuckles. And the vibration is definitley coming thru the steering column and not the *** of my seat.