240sx front end shimmy and rattle

I have a 95 nissan 240sx. So far i replaced the tension rods(solid
bushings), Inner and Outer tie rods(spherical bearings), and Coilovers.
I am still getting a funky sound when i hit certain bumps on the road.
The construction roads where the black top is gutted and its all rocky,
is when I hear it constantly. It sounds like the bump vibrates up. I
made sure I replaced is tight. My question is if my sway bar bushings
are shot. Would it cause this sound. I am also experiencing my steering
wheel shaking at 65-70 mph. Could my sway bar also cause this? The
tires were balanced and the car aligned but the problem was still
there.
If someone can get back to me it would be great. I have no idea whats
wrong.

aznrib (AT) gmail (DOT) com wrote:

I have a 95 nissan 240sx. So far i replaced the tension rods(solid
bushings), Inner and Outer tie rods(spherical bearings), and Coilovers.
I am still getting a funky sound when i hit certain bumps on the road.
The construction roads where the black top is gutted and its all rocky,
is when I hear it constantly. It sounds like the bump vibrates up. I
made sure I replaced is tight. My question is if my sway bar bushings
are shot. Would it cause this sound. I am also experiencing my steering
wheel shaking at 65-70 mph. Could my sway bar also cause this? The
tires were balanced and the car aligned but the problem was still
there.
If someone can get back to me it would be great. I have no idea whats
wrong.

Sounds like the struts are shot. Do the bounce test and see if pogo time.

Sparky

it cant be the strut because they're all new. I replaced the original
struts with Megan Racing Coilovers. The problem started happening
before and after I replaced the part

aznrib (AT) gmail (DOT) com wrote:

I have a 95 nissan 240sx. So far i replaced the tension rods(solid
bushings), Inner and Outer tie rods(spherical bearings), and Coilovers.
I am still getting a funky sound when i hit certain bumps on the road.
The construction roads where the black top is gutted and its all rocky,
is when I hear it constantly. It sounds like the bump vibrates up. I
made sure I replaced is tight. My question is if my sway bar bushings
are shot. Would it cause this sound. I am also experiencing my steering
wheel shaking at 65-70 mph. Could my sway bar also cause this? The
tires were balanced and the car aligned but the problem was still
there.
If someone can get back to me it would be great. I have no idea whats
wrong.

Have you checked the ball joints and wheel bearings? my 92 SE-R steering

shook at the same speed as yours and it turned out to be a front wheel
bearing going bad. Plus you have replaced most of the other parts it
could be.

I thought the wheel bearings would sound like a drone like sound on
the highway, almost sounds like a truck next to you? I also shook my
wheel at 12 and 6 and 3 and 9 and theres no play. The only ball joint
I have replaced is that Front Lower Control arm. Just by looking at
the ball joint, its not ripped or leaking. I dont know how else to
test it.

What kind of balance did you did? The one that measures road force? It
is the only one that tells the truth.
http://hunter.com/pub/product/balancer/4159T/index.htm

Make sure that the front end alignment is withing the manufacturer's
specs. I guess some toe-in is required. Are the camber and caster
within specs?

Good luck




aznrib (AT) gmail (DOT) com wrote:

I have a 95 nissan 240sx. So far i replaced the tension rods(solid
bushings), Inner and Outer tie rods(spherical bearings), and Coilovers.
I am still getting a funky sound when i hit certain bumps on the road.
The construction roads where the black top is gutted and its all rocky,
is when I hear it constantly. It sounds like the bump vibrates up. I
made sure I replaced is tight. My question is if my sway bar bushings
are shot. Would it cause this sound. I am also experiencing my steering
wheel shaking at 65-70 mph. Could my sway bar also cause this? The
tires were balanced and the car aligned but the problem was still
there.
If someone can get back to me it would be great. I have no idea whats
wrong.

When I went to Good Year to do my alignment, they said they couldn't
do it because since my car is modified, they cannot use the factory
specs to align the car. The coilovers was mainly the issue because
they said they didn't know what numbers to put in to align the car. So
i ended up going to a shop that did alignment for muscle cars and a
few of my 240 friends went there and they said it was good. The only
thing is they dont give a alignment sheet when its done. I dont think
I'll be going back there again because my friend said one of his
wheels is cambered in more then the other. He also vibrates alot. It
is a possiblility that the alignment shop did a crappy job. But I am
still getting that weird noise when i hit bumps...... sounds like the
wheel is hollow or like when metal hits metal but when a rubber
material is in between.

An easy wey to know if your vibration comes from defective suspension
components:

Grab each one of the tires from the top. Rock it in and out fast and
strong enough to rock the car. You will feel the play in your hands and
hear the knocking if there is play.

Grab each tire from the left and right sides as if to cause them to turn.

Vibration from alignment is mostly seen in cars with less than optimal
suspension components in particular when the toe is left at 0 degrees
and this is why a lil toe-in can be convenient.

Vibration from wheels and tires is harder to find than one might think.
It can be caused by a defective wheel, a defective tire, an out of
balance assembly, an improperly mounted tire, a combination of all.
That is why, to my knowledge, the Hunter machine is the only one capable
of finding the real cause of the problem.

Good luck.

Eddy wrote:

When I went to Good Year to do my alignment, they said they couldn't
do it because since my car is modified, they cannot use the factory
specs to align the car. The coilovers was mainly the issue because
they said they didn't know what numbers to put in to align the car. So
i ended up going to a shop that did alignment for muscle cars and a
few of my 240 friends went there and they said it was good. The only
thing is they dont give a alignment sheet when its done. I dont think
I'll be going back there again because my friend said one of his
wheels is cambered in more then the other. He also vibrates alot. It
is a possiblility that the alignment shop did a crappy job. But I am
still getting that weird noise when i hit bumps...... sounds like the
wheel is hollow or like when metal hits metal but when a rubber
material is in between.