Do I need a new CAT? Options

[ShadowPhantom]

When I first start the car and give it some gas the car sounds like a gurgling terd. Once it warms up it is much less noticeable. Sounds almost like a little marble bouncing around by the exhaust manifold with a bit of a sputtering sound. It only does it when it is in gear not when you rev the motor.

Anyone have any idea what needs to be replaced? CAT or manifold?

[6gsillyca]

If it were sounding more like a rasping/light rattling sound, then I would agree with bindertch on the flezpipe issue. When I first got my gt it was making a sound like that. Replaced the flex-pipe and no more bad sounds.

[ShadowPhantom]

If it were sounding more like a rasping/light rattling sound, then I would agree with bindertch on the flezpipe issue. When I first got my gt it was making a sound like that. Replaced the flex-pipe and no more bad sounds.

Maybe it is the flex pipe then. I remember checking it out when I changed the O2 sensor. It looked pretty knarled up. It was so frayed up that it kept poking my hand.

What is the part # and do I need to order it from Toyota? How do you remove and install?

Thanks Again,
Chris