Knocking...

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Chicagoland, IL
#1
Ok, so the knocking coming from the back of my car has returned again. About a week ago it came back and I took it to the mechanic for an oil change. I asked him to take a look at that as well. He said it was the supports for the exhaust system which were indeed badly worn. He claimed that since it was almost torn and what not, it was causing it to knock against the car.

$30 bucks later, a couple supports are replaced and the knocking noise is gone.

Or so I thought.

It came back a couple days ago. It's hard to describe really. It's like someone literally taking a hammer and banging it on my car. Oddly enough, it doesn't effect the cars ride or what not and only makes the noise under acceleration. If I depress the gas pedal or reach a certain speed, it's gone.

I know I need to get my wheels aligned and that back left wheel seems to have a more angled stance than the right wheel. So I'm not sure if that's the cause. It's just annoying cos the shocks seems fine and looking under the car the mechanic and I are totally dumbfound as to what it may be. Anyone have an idea???

Help...

[:(]
 
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Chicagoland, IL
#3
It's when I'm accellerating. Usually between 20-40 mph. But as long as I have my foot on the pedal and the car is going it'll make the knocking noise. If it's just coasting you don't hear it.
 
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Paderborn, Germany
#5
differencial maybe? i friend of mine has a similar problem, though his car is way older but the source of the problem can be equal. under stress, when accelerating the sound occurs, not while coasting
 
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#6
mikev said:
I had the EXACT problem. every so often it will knock under acceleration. it could be the rear suspension bushings i'd get it all checked out soon (i did)
Ah, you reckon it's an expensive thing to fix?

It's like when you have some cash to spend you're problem free, and when all the bills are payed, your car gets mental on you... blah. Haha...
 

mikev

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#8
ODDferkOUT said:
Ah, you reckon it's an expensive thing to fix?

It's like when you have some cash to spend you're problem free, and when all the bills are payed, your car gets mental on you... blah. Haha...
its not too bad but depends what you mean by expensive i got it done with alot of other work and i havn't had the invoice yet but i'll let you know should be no more than £300
 


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