Can't figure out why I have a knocking sound in the back of my car when I drive?

Question

I have a 91'Chevy beretta, and everytime I accelerate or I am in motion driving there's this knocking sound in the back, the car is slightly wobbles, and rolls kind of awkwardly as if one wheel is bigger than the other three but there all the same size, someone, said it may be I need new shocks, but the car is sitting up high off the back tires and someone said when the car sits high off the back tires that means you have good shocks, I was wondering maybe it's one of the tires, or I need a wheel alignment, does anyone know what's causing the knocking noise, and the wobble, when I drive?

Answer 1

First thing you do is lift your vehicle off the ground and put it up on jack stands. I'm not too familiar with the under carriage of the Beretta, but I kind of remember a torque arm or a differential snub at the pinion snout of the differential. If the rubber bushings where worn out or missing they would let you know. Check the suspension .The car is old.

Answer 2

If it is the engine pinging/knocking, you would settle on that through using higher octane gasoline. A music-up will be solid too. Spark knock or preignition now and again is led to through carbon construct-up in the combustion chambers. different knocking will be some thing bodily bumping, like a loose exhaust pipe. A torn engine mount can enable factors to the contact different factors and knock at the same time because the drivetrain sags.

Answer 3

Could be something as simple as the actual tire not being properly mounted. If that's the case, not only will it do what you describe, but it is really unsafe. Check that out first, since it won't cost you any money.

Answer 4

This may be a few things. * my own experiance.

Check: Tires, rear brakes, under pinnings-shocks, springs, control arms, maybe your wheel bolts, or rims are bent...pretty much all you can have it checked by a repair shop, no obligation to have them fix what may be found and it shouldnt cost much either.

Best wishes.
"/JOe

Answer 5

shocks and struts are bad...jump up and down on each corner of your rear bumper...you'll see it...also, could have a loose or broken shocks!!!..i also belieev there is a sway bar in the rear that could be bad too...doesnt cost anythign to take it to the shop and have tell you whats wrong....good luck !

Answer 6

remove the bowling ball from the trunk