Shaking
Thread Starter
On The Tree
Joined: Feb 2011
Posts: 180
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From: Bruceton TN
Shaking i was ridding on the highway the other day and realized my car was shaking really bad. i know it has been shaking but i thought it was mainly crappy tar and chip roads. i know an alignment will help but is there anything that will make it ride smoother but keep most of the performance. thanks for your help.
It can be a number of things...
Does it only vibrate at certain speeds?
If at those speeds and the car put into neutral does the vibration go away? If yes, then then it is most likely engine related. If no, then it's chassis related.
Does it only vibrate when applying the brakes?
It could be a drive shaft out of balance
Could be a tire out of balance or has a flat spot
Could be the preload on the pinion gear is out of whack (although usually the symptoms include noise/grinding when load is applied to gears)
Could also be the pinion angle is wrong (although symptoms of this too is excessive noise/grinding)
An alignment will not help vibration although it is a good idea to at least have it checked.
Does it only vibrate at certain speeds?
If at those speeds and the car put into neutral does the vibration go away? If yes, then then it is most likely engine related. If no, then it's chassis related.
Does it only vibrate when applying the brakes?
It could be a drive shaft out of balance
Could be a tire out of balance or has a flat spot
Could be the preload on the pinion gear is out of whack (although usually the symptoms include noise/grinding when load is applied to gears)
Could also be the pinion angle is wrong (although symptoms of this too is excessive noise/grinding)
An alignment will not help vibration although it is a good idea to at least have it checked.
Run over any tires lately and dent your rim? 
lol happened awhile ago.
Seriously the best thing to do would be as said pop it in neutral when it's doing it, see if it's chassis related. Should be able to tell if it's from the front or rear too.
If it is the chassis you can do this...
If you've never done it find an abandoned road, pop it into neutral when it does it, cut the engine off and listen. That's how i determined my rear bearings were shot.
lol happened awhile ago.Seriously the best thing to do would be as said pop it in neutral when it's doing it, see if it's chassis related. Should be able to tell if it's from the front or rear too.
If it is the chassis you can do this...
If you've never done it find an abandoned road, pop it into neutral when it does it, cut the engine off and listen. That's how i determined my rear bearings were shot.
Thread Starter
On The Tree
Joined: Feb 2011
Posts: 180
Likes: 0
From: Bruceton TN
ok i went outside and put it in R and it was shaking a little bit and then put it in neutral and the shaking was about the same (maybe a little bit less but not to much). i looked at all my tires and there isn't anything wrong with them, they all have the same wear. my rims are good but the right front has a little curb rash from the previous owner but its not that bad.
what does anyone else think?
what does anyone else think?
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TECH Enthusiast
Joined: Aug 2010
Posts: 543
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From: New Hampshire
I dont know about visors(i have no interior) but after I replaced my stock motor mounts with poly ones, there was alot more vibrations in the car. No idea if you have replaced the motor mounts. Just tossing it out there.
I'd start with the simple things first and check to see if you have a dead cylinder(s). The way you go about that is start the car and then pull an injector clip one at a time. Each time you pull a clip and the idle changes, move on to the next until you pull one and the idle stays exactly the same. You will then know that cylinder is not firing. Do it on all eight cylinders. Go back to dead cylinder(s) and check plug wires to ensure they are making good connection and are not burnt. Pull plugs and check for damage or fouling.
Thread Starter
On The Tree
Joined: Feb 2011
Posts: 180
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From: Bruceton TN
i replaced all my spark plugs and spark plug wires about 2 months ago because of a misfire. but i will check. and the previous owner replaced the engine with a jasper engine, he might have changed the mounts but idk.
also it gets worse as i am going faster. its worse a 70 then at 45.
also it gets worse as i am going faster. its worse a 70 then at 45.
Please be as descriptive as possible.
I'm a little lost. Does it only shake when the car is in motion? You say you put it in neutral and reverse, but weren't very descriptive beyond that. If it's shaking while the car is not moving and moving you have two different problems. One is engine related and the other is drivetrain/chassis related.
Please be as descriptive as possible.
Please be as descriptive as possible.
Thread Starter
On The Tree
Joined: Feb 2011
Posts: 180
Likes: 0
From: Bruceton TN
ok it shakes when and sitting and worse as i get faster it shakes worse. and i know you can't tell if there out of balance by looking at the but all the tread is the same there is no bald spots. while sitting my car is shaking slightly. i can see my visors, steering wheel, and pas. seat shaking. as i go faster the shaking gets worse. could there be a couple of things making it shake? sorry for not helping that much, i can't discribe it real well but thats pretty much it. thank you for the help.
