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Thump noise when accelerating!

 
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Old 09-10-2008, 06:51 PM
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Thump noise when accelerating!

How's it hangin fellow members of the council. I'm not getting a clear answer on this google'ing or searching so...

My car makes this thumping noise when I accelerate, its especially harsh when i stay in a higher gear in low RPM and accelerate (ie. 5th gear, 2k rpm, accelerate). Anyone know what it could be?

It's not my tires, nor chamber.

Thanks in advanced.
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Old 09-10-2008, 06:52 PM
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Re: Thump noise when accelerating!

does it happen on bumps?
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Old 09-10-2008, 07:01 PM
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Re: Thump noise when accelerating!

No. Just complete smooth road accelerating. The minute i let off, its smooth with no thumping noise and shaking. Only when i accelerate i get the thumping and shaking especially in lower rpm in higher gear acceleration.

Thanks for the quick feedback.
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Old 09-10-2008, 07:04 PM
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Re: Thump noise when accelerating!

can you describe the sound a little better??
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Old 09-10-2008, 07:12 PM
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Re: Thump noise when accelerating!

It's as i have a cancerous lump in my tire. But the loud thumping sound and vibration sounds like its coming from the axle. When i accelerate hard it gets very scary as if the wheel is falling off.

Any of you experience this before?

Thanks.
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Old 09-10-2008, 07:17 PM
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Re: Thump noise when accelerating!

suggestions:

check your motor mounts.
and
jack your car up and shake your wheels to check for anything loose.
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Old 09-10-2008, 10:09 PM
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Re: Thump noise when accelerating!

Tune up.


key words in your first statement were "at lower RPMs"

If your in need of a tune up bad, your car will shake horribly at low RPMS.

Whens the last time you had a tune up?
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Old 09-10-2008, 11:05 PM
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Re: Thump noise when accelerating!

I had a tune up 2 months ago. I am pretty sure its something along the lines of axle, cv joint or something. I'm just curious to know if anyone had an experience like this or knew anyone that went through this to exactly find out. Thanks for the posts.

I'll post back when i take it to the mechanic to see what they say, hopefully they know what it is.

Anyone want to take bets on what it is? lol
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Old 09-10-2008, 11:39 PM
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Re: Thump noise when accelerating!

motor mounts is my guess
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Old 09-10-2008, 11:49 PM
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Re: Thump noise when accelerating!

I got 20 bucks on the axle.
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Old 09-10-2008, 11:58 PM
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Re: Thump noise when accelerating!

it's not a tune up, it's not your motor mounts, "it's not a tumor" - :make's arnold accent:

1000% it's your axle
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Old 09-11-2008, 12:00 AM
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Re: Thump noise when accelerating!

my car had this odd lump after a mechanic capped of a vacumm in my car that was near my intake manifold, it made my car thump in low rpms when revving as well as when i let off teh gas, the car would keep going as if it were automatic
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Old 09-11-2008, 12:03 AM
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Re: Thump noise when accelerating!

Quote:
Originally Posted by DaLude94 View Post
my car had this odd lump after a mechanic capped of a vacumm in my car that was near my intake manifold, it made my car thump in low rpms when revving as well as when i let off teh gas, the car would keep going as if it were automatic
not what he is describing but ouch!

it's gotta be his axle. doesn't sound like a vacuum issue IMO
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Old 09-11-2008, 12:05 AM
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Re: Thump noise when accelerating!

LOL @ the tumor joke!
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Old 09-11-2008, 12:09 AM
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Re: Thump noise when accelerating!

Quote:
Originally Posted by runtingz View Post
LOL @ the tumor joke!
yes sir. btw it's your axle my man. go get it looked at or jack the car up and check your axle boots.

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Old 09-11-2008, 09:59 AM
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Re: Thump noise when accelerating!

I will also side with axel. Friend of mine had the same sound and thats what it turned out to be.
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Old 09-11-2008, 12:23 PM
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Re: Thump noise when accelerating!

Well...I had the same problem and guess what?
Like every time I would push my clutch in, my car would shake and rattle like no other.

My tire flew off while I was driving. Sheered my lug BOLT off, destroyed my drivers side fender and hurt my rims :[
And I had a headache from hell, and had to go to the hospital.
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Old 11-09-2008, 04:07 PM
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Re: Thump noise when accelerating!

It was my gearbox. We put it on the lift and i was switching through gears and it was shaking like crazy! That is what was causing the vibration, it especially happens really bad when its at a higher gear and lower RPM. So i need a new gearbox now.

Gay.
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Old 11-09-2008, 06:19 PM
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Re: Thump noise when accelerating!

what did the mount look like
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