Pabbi's SS01

My Beautiful SS runs strong EXCEPT I'm getting these nasty vibrations from what seems like behind my car around where my exaust pipes end!? No rough idle, no loss of power, runs fine but when I'm close to 1000 rpm, it sounds like a HUGE mutant bee is sitting on my trunk.. It stops when I'm over 1500rpms tho. Or at least the engine drowns it out by then.

wssix99

iTrader: (5)

Does it only happen when the car is moving?

Pabbi's SS01

not really, i notice it stops as soon as i leave the 800-1k rpm range. (idle) im really thinking its the exaust pipe rattling against something. its really annoying. my car is too low to do anything so im kinda limited as far as getting under it. i can get a lift but shop isnt open until wed.

wssix99

iTrader: (5)

So, if it happens when the car is not moving, you are probably on to the cause.

Time to invest in some good jack stands and you'll be set to go.

BlackonBlackTA

iTrader: (3)

Good chance your over axle pipe is resting/hitting on something, I would jack it up and check there first.

V68Sweep

Picturing this made me lol at work haha. Good luck on the fix btw

Pabbi's SS01

hah glad to toss a laugh your way sweep..
but back to the rattling, i was talking to another LS1 driver at the gas station yesterday and he said that the resonating chamber wields in my flowmaster could be deteriorating causing everything in the muffler to rattle. My next muffler will proabably be a MagnaFlow or SLP loud mouth unless you guys think otherwise? BUT before i spend $$ im going to check that axle to see if it is hitting. if it is, what should i wedge in between that wont melt or fall off?

garygnu

try balancing the tires.could be a out of balance drive shaft.

DWake

iTrader: (1)

Yeah it could always be the "death rattle" in your muffler. I had a custom chambered flowmaster on my car when I first bought it and after a few months it rattled like ****. Bullet muffler is the way to go

The Mighty Texan

iTrader: (4)

Indeed haha. I had to trace down some rattles and such the other day, if its not whiles its moving then yeah drive up on some blocks or borrow some jack stands and get someone to rev it to where it rattles/vibrates or if its at idle then n/a and get under there and look around and try to trace the source. Mine ended up being the fuel lines vibrating against a protective shield. Bugged the **** outta be when the car would idle and vibrate those ************* Hope you get it fixed

DWake

iTrader: (1)

Forgot to mention I only got the death rattle at idle, so damn annoying going to a drive thru or being parked for more than a minute

Pabbi's SS01

Thanx for the help guys, turns out it was an exaust pipe weld that broke and two pipes were vibrating against eachother. Just tapped it with a arc welder and was good to go! thank got i didnt have the rattle of death. If i did, i would have just went and bought new exaust all together.