heres the deal ive got the pacesetter header going into a magnaflow cat through the pacesetter catback.... it sound very good at low rpms nice and deep but when it gets up to 4500 or 5000rpms its not raspy but it sounds like something is loose and rattling in the back towards the muffler... its not the exhaust sound that im hearing its something else... ive checked everything and it all looks tight nothin is moving or anything nothings loose....the noise it very annoying/embarasing... any help you guys could provide would be appreciated..... thanks guys
Matt
http://members.cardomain.com/mattlb2200
Quote:
What day is it again?.... I don't sleep enough.....
I am listening as well.....I have a similar setup but on a 2200. The rattle seems to be only in the muffler and I have had a couple mechanics say that it is the baffles...or the sound supressing material inside that is rattling...I can't really figure out why because my Pacesetter Cat is only 4 months old. Let me know if you find a solution.
ya thats what it sounds like to me too but mine isnt even a month old....
<-thinks we are going to be calling pacesetter for an exchange->
Matt
http://members.cardomain.com/mattlb2200
Quote:
What day is it again?.... I don't sleep enough.....
thats a problem i think with prefab exhaust systems. the are not always an exact fit
Im a Xbox 360 fanboy...and damn proud of it!!
yup..i got an Iperformance cat back exhaust...took it off cause i was sick of hearing the pipe rattle against the axle, and hit the axle any time i go over a bump. pipe runs about 1 inch above the axle...with the car empty its fine...as soon as i sit in it it rattles(only when vehicle is stopped, in reverse, or at certian RPM's). guess my 170lbs compresses the suspension too much. company web site says that if the exhaust hits the rear axle then the cars shocks are blown. car is only 8 months old...damned shocks arent blown. exhaust just needs to be redesigned.
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Get a rubber mallet and hit the muffler.If theres anything loose inside of there youll hear it.My friend had the same problem,when he would give it gas,you heard a rattling noise.After a while whatever was in the muffler,flew out and the noise went away.Most likely,one of your baffles are broken.Either that or the baffles in your cat are broken.Just take the rubber mallet and hit the whole exhaust.
Peter
'06 Cobalt ss/sc W/G85 Package
Gm Stage II W/2.79" Pulley
K&N Drop In Filter
Custom Magnaflow Dual Exhaust
check the clamp, right before the axle where your muffler is attached you should see a bolt with a rubber/cloth strap tighten it down and it should be ok. This is wht i did on mine, never had a prollem since.
I have hit mine with a rubber mallet and the rattling is coming from the muffler. so if I keep hitting it the loose stuff will fall out?
don't have that problem and i have custom cat back. I would make sure all the hangers are where they are suppose to be.
2004 Grand Prix GTP (Competition Group)
SOLD-->1999 Z24 5M-#30 to register on JBO
"You can please some of the people some of the time but you can't please all the people'
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ptrblkz24 wrote:Get a rubber mallet and hit the muffler.If theres anything loose inside of there youll hear it.
i think ill try that.... that is really what it sounds like it is...
its not the catback hitting on anything i got that fixed when i got the cat welded in...
thanks for the comments guys... keep um commin
Matt
http://members.cardomain.com/mattlb2200
Quote:
What day is it again?.... I don't sleep enough.....
I had a rattle... had to replace my cat. $350 later, no rattle! YAY
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mine hit the cross member and the heat shield sometimes. but i think now its just dented up enough to not be noticable. Or it could also be......
Sry had the pic layin around.... Long day....
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AGuSTiN wrote:I had a rattle... had to replace my cat. $350 later, no rattle! YAY
it was the cat in your?? why did you pay 350$ for a cat>?
hondakillinz24 wrote:mine hit the cross member and the heat shield sometimes. but i think now its just dented up enough to not be noticable. Or it could also be......
Sry had the pic layin around.... Long day....
WTF!!
why!! do you have a bearing in your exhaust... !
Matt
http://members.cardomain.com/mattlb2200
Quote:
What day is it again?.... I don't sleep enough.....
You didn't know the muffler has bearings?
Yeah, at one point I took my cat off and at high rpms my exhaust rattled badly, it sounded like my muffler had a loose baffle, but it was actually just unburnt fuel burning off and popping when it hit the muffler baffles. This went away when I put the cat back on. Maybe your high flow cat is letting more unburnt fuel and exhaust vapors back to your muffler and causing this same problem.....just a thought.
check the heat sheild thats where mine came from
1989 Turbo Trans Am #82, 2007 Cobalt SS G85
Corey Case wrote:Yeah, at one point I took my cat off and at high rpms my exhaust rattled badly, it sounded like my muffler had a loose baffle, but it was actually just unburnt fuel burning off and popping when it hit the muffler baffles. This went away when I put the cat back on. Maybe your high flow cat is letting more unburnt fuel and exhaust vapors back to your muffler and causing this same problem.....just a thought.
i do have a CEL so...got it a day or so after the cat was put in maybe it is that i know the cat isnt doing its job.... thanks for the help guys...
I have a pacesetter header, cat-back, and a Catco high flow cat. My rattle is from the muffler's baffles. I am thinking of just replacing the muffler or ripping the @!#$ baffles out.
PRND321 Till I DIE
Old Motor: 160whp & 152ft/lbs, 1/4 Mile 15.4 @88.2
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i have a 95 2.2 with a pacesetter header and a hollow cat with a monza cat back and the sound is coming from the muffler. that thing embarrass me whenever i get on it. how can it be fixed?
call and ask about warrenty for the muffler
