# Rattling noise at 3000

**URL:** <https://forums.speedlife.net/t/rattling-noise-at-3000/81721>\
**Category:** SON240sx Automotive\
**Created:** [October 5, 2004, 10:40am UTC](https://forums.speedlife.net/t/rattling-noise-at-3000/81721 "2004-10-05T10:40:11Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Jay240](https://avatars.discourse-cdn.com/v4/letter/j/57b2e6/32.png) [@Jay240](https://forums.speedlife.net/u/Jay240)\
**Post date:** [October 5, 2004, 10:40am UTC](https://forums.speedlife.net/t/rattling-noise-at-3000/81721/1 "2004-10-05T10:40:11Z")

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I notice that my car makes a rattling sound when it hits around 3000 rpm. Its similar to the timing chain rattle at start-up, but not quite as loud. Its not that noticeable while driving, but from outside the car its somewhat loud.

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**Author:** ![s14\_2Nv](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/s14_2nv/32/5476_2.png) [@s14\_2Nv](https://forums.speedlife.net/u/s14_2Nv)\
**Post date:** [October 5, 2004, 11:34am UTC](https://forums.speedlife.net/t/rattling-noise-at-3000/81721/2 "2004-10-05T11:34:37Z")

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Could be a number of things, check your heat shields on your exaust, muffler tips if you have them, etc.

Where is the sound coming from?

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**Author:** ![\_M\_aurice](https://avatars.discourse-cdn.com/v4/letter/_/c5a1d2/32.png) [@\_M\_aurice](https://forums.speedlife.net/u/_M_aurice)\
**Post date:** [October 5, 2004, 12:07pm UTC](https://forums.speedlife.net/t/rattling-noise-at-3000/81721/3 "2004-10-05T12:07:27Z")

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If its a SOHC it could be your connecting rod bearings… they like to crap out on the pignose…

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**Author:** ![Jay240](https://avatars.discourse-cdn.com/v4/letter/j/57b2e6/32.png) [@Jay240](https://forums.speedlife.net/u/Jay240)\
**Post date:** [October 5, 2004, 3:05pm UTC](https://forums.speedlife.net/t/rattling-noise-at-3000/81721/4 "2004-10-05T15:05:50Z")

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Its an SOHC. The sounds seems to be coming from the engine block. I’ll have to try and pin-point the exact location where the sound is.

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**Author:** ![syd\_mysta](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/syd_mysta/32/5488_2.png) [@syd\_mysta](https://forums.speedlife.net/u/syd_mysta)\
**Post date:** [October 6, 2004, 12:29pm UTC](https://forums.speedlife.net/t/rattling-noise-at-3000/81721/5 "2004-10-06T12:29:50Z")

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If it is coming from your block I’m gonna have to say it’s your rod bearings. Same thing happened to me.

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**Author:** ![Pavel](https://avatars.discourse-cdn.com/v4/letter/p/a4c791/32.png) [@Pavel](https://forums.speedlife.net/u/Pavel)\
**Post date:** [October 8, 2004, 2:24pm UTC](https://forums.speedlife.net/t/rattling-noise-at-3000/81721/6 "2004-10-08T14:24:30Z")

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I had the same problem. Well, worse, i had 2 problems. 1st my heatshield at the exhaust manifold was cracked, after fighting it for almost an hour and benind the hell out of it I got it off.

Then i found another leak that also seemed to be coming from my engine bay, but it was the cat-exhaust gasket.

Basically just go over all the bolts and gaskets and you’ll figure it out.