Rattle, what is this rattle? Options

[Euphoria]

Hey, had a rattling problem somewhere in the exhaust recently which I believed was the flex pipe, had it replaced and the noise is still there so I'm fairly sure its the cat, now as far as I can see in the Australian ST204 there is only one cat which is on the manifold? so I looked up on Ebay and they seem the most expensive ones and as for getting them in Australia I'm sure they are super expensive so I have a couple options.

I looked at my friends mums celica recently and noticed it had headers and where my cat was, it looked to have none and the o2 sensor was lower, why is this? would there have been a cat in there that couldn't be seen perhaps?

another option is perhaps gutting the cat until I find one at a wreckers or something, I've heard people say this lowers power and makes it louder, I've also head it makes it no louder and no more or less power, whats really the answer?

thanks, this is driving me crazy.

This post has been edited by Euphoria: Apr 12, 2010 - 11:30 PM

[Euphoria]

well had a good look over all the hangers, all have the rubber still there.

I did workout it doesn't seem to do it whilst the engine is cold, although I don't want to rev much past 3k when its cold.

I'm thinking its something on the timing belt area, or the alternator, anyway it could be a bearing in the alternator?

[SL44]

well had a good look over all the hangers, all have the rubber still there.

I did workout it doesn't seem to do it whilst the engine is cold, although I don't want to rev much past 3k when its cold.

I'm thinking its something on the timing belt area, or the alternator, anyway it could be a bearing in the alternator?

I have a noise, more noticeable when well warmed up. Thought it was engine front area; had to replace oil pump due to a leak anyway so also got to check other moving parts for wear, all seemed well. Changed harmonic balancer; noise still there. I drove it > 30 miles for the first time in 2 months today and am now convinced its in the power steering pump; its an annoying tapping sound that stops when moving the steering wheel just a little.

Check your PS pump area for that noise.