The Infamous Rattle

CNCguy

New Member
Apr 12, 2015
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Hey folks!

Jeremy from Indiana here. New kid on the forum block just looking for some insight from all you veterans who have been around for a minute or two :).

My wife and I just bought our second mustang. Our first one was an 02 GT auto tranny, the one we just bought a couple months ago is an 01 GT 5 speed with 80k miles so I'm still very new to the mustang anatomy. K&N cold air, off road X-Pipe, and we will call it an "Indiana-fied" exhaust that dumps out in front of the rears. The previous owner didn't do a BAD job on it, just could've been a little more clean. The thing does sound pretty mean.

Now onto the meat and potatoes...I have noticed that infamous "gravel in a tin can" sound upon starting and idling. I never take off in it until it is fully warmed up. This is the only time I hear this horribly embarrassing sound. After that, it is smooth as butter and purrs like a kitty. It does seem to come right around the bell housing but I can't say for sure. So that leads me to ask, what year did Ford leave out a couple bolts for the shield on the bell housing? I see this as the culprit in a lot of 05 and newer models, so I'm just not sure if my year even applies. I have limited access to a lift, and there is no way my ass is squeezing under there lol. So I would just like a direction to go before I lift her up. I've banged around on what I could reach of the exhaust and haven't heard anything like what I've been hearing, so I'm onto other things. Also, I never heard anything like this on our 02 auto tranny if that means anything...Thanks in advance everyone!

Cheers,

Jeremy
 
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worn timing chain guides will sound like that at start-up, but at 80K miles that shouldn't be an issue...

I would have to agree...Actually just got back from the exhaust shop and we seem to think it is a bad catalytic converter. Surprised the hell out of me, but hey, he gets paid to know this stuff lol. But do you think a bad kitty would stop rattling after it has warmed up?
 
I would have to agree...Actually just got back from the exhaust shop and we seem to think it is a bad catalytic converter. Surprised the hell out of me, but hey, he gets paid to know this stuff lol. But do you think a bad kitty would stop rattling after it has warmed up?


Naw... They start breaking up after a few OVERheat cycles.

Might be a good time to put in some 3-way if you can do that where you live.