Engine gurus: I need help with a sound!
#16
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Thanks to all of my "online mechanics"!!
It seems as if the consensus is an issue with either a loose heat shield (perhaps not
tightened after coil pack install), or an problem with one of the cats.
I will have it checked by my Indy asap. I needed front brake pads and an oil change anyway...
If it is one of the cats, and they are no longer in warranty (no cel), then it might be time for cat bypass pipes!!
It seems as if the consensus is an issue with either a loose heat shield (perhaps not
tightened after coil pack install), or an problem with one of the cats.
I will have it checked by my Indy asap. I needed front brake pads and an oil change anyway...
If it is one of the cats, and they are no longer in warranty (no cel), then it might be time for cat bypass pipes!!
![evilgrin](https://rennlist.com/forums/graemlins/evilgrin.gif)
#18
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My original plan was to say I couldn't name that tune or band. But.......hey good luck getting to it. That sound isn't anything any of us would want to hear on our cars. Best of luck.
#19
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...update...
Well, I crawled around a little bit under the car and found a loose bolt that holds the exhaust can. After some contortionism, I was able to tighten it - but didn't have time to turn it on and listen...
I also rubber malleted the cats / exhaust etc - no sound... curiously, the OEM headers look more like the picture of the X51 headers... so thats cool (never paid attention before).
Hopefully this will be it.
Well, I crawled around a little bit under the car and found a loose bolt that holds the exhaust can. After some contortionism, I was able to tighten it - but didn't have time to turn it on and listen...
I also rubber malleted the cats / exhaust etc - no sound... curiously, the OEM headers look more like the picture of the X51 headers... so thats cool (never paid attention before).
Hopefully this will be it.
#21
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Noise is GONE.
Hard to believe a bolt with 2 turns of play, could make that sound. Maybe a good time to bypass the cats anyway, you know, as a precaution...
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thanks to all