Rattling in front y pipe
Thread Starter
Racer
Joined: Nov 2001
Posts: 392
Likes: 6
From: Churchville PA
Rattling in front y pipe
I found the noise in my exhaust that I thought was an exhaust leak. On the driver side of my front y pipe, just behind the pre cat, something is rattling inside. With the car running, I'm holding all sections of the heat shields, the o2 sensor, etc. Right there. Nothing around the pipe or touching the pipe is moving however, if you hold the pipe or heat shield, you feel the rattling that you hear in that immediate area. It almost feels like a chambered exhaust pipe when the inner chamber broke loose from the welds. Is there anything inside the Pipe in that spot?
I sprayed down the bolts there tonight and will separate the y pipe from the cats and try to look inside this weekend. Just wanted to check here first to see if ne had the same issue or ideas what it might be.
It's a 96 LT1 with 39k miles
Thanks
I sprayed down the bolts there tonight and will separate the y pipe from the cats and try to look inside this weekend. Just wanted to check here first to see if ne had the same issue or ideas what it might be.
It's a 96 LT1 with 39k miles
Thanks
Pro
Joined: Oct 2003
Posts: 506
Likes: 12
From: Savannah GA
Hey, you need to do something soon! What you hear is the cat brick loose. Eventually it's going to break up and plug your main cat.
Ask me how I know, I was 150 miles from home in the middle of the night. For a while I was doing 45mph and that was it.
My Y pipe came off without breaking any studs in the exhaust manifolds. Took a long piece of 1/2 pipe and beat the bricks out and put the pipe back on.
If you do it soon maybe you won't trash the main cat.
Nobody has ever said they couldn't pass smog with a only a good main cat if you are worried about it.
JS
Ask me how I know, I was 150 miles from home in the middle of the night. For a while I was doing 45mph and that was it.
My Y pipe came off without breaking any studs in the exhaust manifolds. Took a long piece of 1/2 pipe and beat the bricks out and put the pipe back on.
If you do it soon maybe you won't trash the main cat.
Nobody has ever said they couldn't pass smog with a only a good main cat if you are worried about it.
JS
Le Mans Master
Joined: Mar 2001
Posts: 7,999
Likes: 14
From: Life is just one big track event. Everything before and after is prep and warm-up and cool-down laps
Cruise-In III Veteran
Cruise-In IV Veteran
St. Jude Donor '12
Why don't people read the original post????
Its a freakin 96, there is no Y pipe and no pre-cats.
Chris - your going to need to find a shop that will replace your original cats with replacement cats. Find a good exhaust shop.
Its a freakin 96, there is no Y pipe and no pre-cats.
Chris - your going to need to find a shop that will replace your original cats with replacement cats. Find a good exhaust shop.
Racer
Joined: Jun 2010
Posts: 290
Likes: 5
From: Winona MN
Thread Starter
Racer
Joined: Nov 2001
Posts: 392
Likes: 6
From: Churchville PA
It looks like the cats are all bolt-on between the exhaust manifolds and mid-pipe. I figured I could do this in my garage and not have to pay a shop to do it....
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