I have a whistle sound coming from the ypipe area, its loud!
04-05-2005, 03:41 PM
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I have a whistle sound coming from the ypipe area, its loud! Hey guys, i had a cat replaced last year and i just took the car out of storage, mileage is about 10mpg, i have a whistle sound that sounds like its coming from what under me, if you open the drivers door, right under the seat it comes from, its not coming from the engine compartment, and the whistle gets faster as i rev the car. Anyone?
Mike
Mike
04-06-2005, 10:48 AM
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would a loose o2 do that? i live in an apt and up 2 flights of stairs, i dont have a jack, so i gotta go somewhere to get under the car to try to see, i prefer a lift, because so i can leave the car running and isolate the noise.
04-06-2005, 03:10 PM
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I know you said it's not coming from the engine compartment, but you might want to double and triple check anyway. I had a sound just like that, and thought it was coming from under me. Finally after popping the hood for about the 30th time I decided I thought an exhaust manifold was leaking, so I did a header install.
The noise ended up actually being on air hose that runs in to the firewall... the hose had gotten brittle and cracked. Worth checking out. It really could be as easy as a loose O2 letting air through. As you explained it (gets louder with rev) it's almost certainly a leak somewhere.
The noise ended up actually being on air hose that runs in to the firewall... the hose had gotten brittle and cracked. Worth checking out. It really could be as easy as a loose O2 letting air through. As you explained it (gets louder with rev) it's almost certainly a leak somewhere.
04-06-2005, 03:13 PM
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well i did double check again today, the car is warmed up, its very audible at idle, even though the car seems warmed up, then at idle it goes away, but you still hear once you hit the gas, and i checked the engine compartment, sounds like its coming from in there, but i think down somewhere, i couldnt see anything weird, and im not throwing codes, but i did smell rotten eggs a couple times briefly, but the car doesnt see high rpms really. I need it on a lift and someone on the gas and rev it up, so i can check underneath. something is leaking i guess but how come no codes? if it was air or egr, they throw codes for a leak.
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04-08-2005, 12:37 PM
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UPDATE. Okay i went and got some belt dressing, made the noise louder for a second, didnt do anything, not a belt, basically the sound is like crickets now under my hood, especially when im driving, its like a forest of crickets under my hood! Is this the infamous idler pully i have been reading about and how much is this gonna cost me in parts??
05-13-2005, 12:39 PM
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Some Y-pipes interfere badly with chassis / heat
shields / driveshaft / trans Xmember and you have
to hang them just right and perhaps beat them into
a proper attitude.
If you have a lot of this vibration coming back up the
pipe wall the knock sensors may pick it up, pull timing
and performance goes down the tubes (heh).
However given the replacement cat deal, I wonder
whether there's a lost chunk lodged in the pipe to
make the whistling. That sure would explain a loss
of MPG.
shields / driveshaft / trans Xmember and you have
to hang them just right and perhaps beat them into
a proper attitude.
If you have a lot of this vibration coming back up the
pipe wall the knock sensors may pick it up, pull timing
and performance goes down the tubes (heh).
However given the replacement cat deal, I wonder
whether there's a lost chunk lodged in the pipe to
make the whistling. That sure would explain a loss
of MPG.
05-13-2005, 01:27 PM
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Originally Posted by PG45
I got the same problem...Only difference is that i put a new y pipe on the day it started so im thinking that its the coulprit
