okay i have been searching and searching and cant find anything to my problem, but my car will sometimes shake during hard acceleration but only does it once its gets pass like 50mph, but then if i am to accelerate slowly then i can get to about 70mph and it wont shake until after then, i have put suspension on the car and have it lowered with no camber kit yet and the car also hasn't been aligned yet but if that dosent fix it could the clutch or the flywheel being lose or maybe put on evenly would that cause it to do this or would i have alot more shaking if it was that and noises the car makes no noises at all no grinds, clicks, or whurrs. so if someone can give me an idea that would be great also the axles seem to be good they have no play in them and they are nice and tight , but for some reason i still think i need to replace the axles because of this shaking problem

 

Check for worn bushings in the suspension components. I would also recommend getting an alignment BECAUSE you lowered the car, that should have been done already. Also rotate the front tires to the back to see if the rear tires do the same thing. If that cures the problem then one of the tires that were on the front could be bad, or both.

 

I guarantee it is your inner CV joint(s). Your guess about the axles is correct. Just stay away from autozone shit.

 

If you can, jack the front of the car up, place it on jack stands and remove the front wheels. Run the car up to the mph you get the vibration at, if the car still vibrates you can eliminate the tires, wheels and alignment from the equation, it usually eliminates the ball joints as well. Typically with a wheel bearing or ball joint the vibration will be more consistent but vary during different speeds and turning. I thought I had figured out what the vibration on my 92 integra was and replaced the right side axle and then the left side axle and then the wheel bearings and the lower ball joints and engine mounts and tie rod end along with two front end alignments tire rotation & balance. Why it didn't dawn on me to lift the car and run it up to speed I don't know. The vibration much like yours was usually under load around 50+ mph with the worst vibration being at 60. Hopefully yours does not turn out to be what mine is (TRANSAXLE)

 

Sounds awfully dangerous to have a car in gear running at 65 mph while on jackstands in someones garage. :noes:

It also changes the angle of the axles which kind of defeats the purpose of the test unless you are trying to see if it is a motor mount.

If the problem occurs while acceleration and the mounts are fine, the problem is the axle. I had the same symptoms and I went through the same ordeal: new tires, a couple alignments, motor mounts, brake rotors, tie rods, etc and the shaking persisted until I replaced the crappy Autozone axles with brand new Gator stage 2 axles. Remanufactured axles have a problem with bad joints, so if you are using a set and have shaking upon acceleration, try replacing the axle with a known good one.

 

Yea not a good idea to run it on jackstands at all really. I did that and ran mine up to 140 to see what the rpms were at. Ripped the CV boots apart. could have torn up more.