S2000 Under The Hood S2000 Technical and Mechanical discussions.

Weird rattling noise at start up

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Old 04-10-2009, 11:34 PM
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Default Weird rattling noise at start up

Just about everytime I start up my S when its cold outside it makes a rattling noise from the engine for maybe a second or two right after startup, then it goes away. I think it might be the starter but was wondering if anyone else has had this problem. The engine runs like normal and havent had any problems other than the rattle. The car is an 02 with 75K miles.
Old 04-11-2009, 08:07 AM
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Can you make a vid so we can hear the sound?

It may be the Timing Chain Tensioner or just time to adjust the valves. Both are less than $200 repairs.

Your engine mods might also provide some clues.
Old 04-11-2009, 09:39 AM
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The engine is completely stock and I was searching and found out that it is the starter. The TCT is more of a card in bicycle spokes sound and this is more of a grinding sound. Thanks for the help though.
Old 04-11-2009, 05:40 PM
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I have the same sound when it starts up, usually only when cold though.
Old 04-12-2009, 12:20 AM
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This is becoming a daily thread these days...
Old 04-12-2009, 12:26 AM
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ehhh... i guess alot of people are having this problem
Old 04-12-2009, 12:56 AM
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Yup I have the same noise. I just don't really care about it though. Some day when I do a clutch job I'll put a new starter in too.
Old 04-13-2009, 12:39 PM
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Has anyone fixed this problem by replacing the starter or something else?
Old 04-13-2009, 12:42 PM
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Yes many people have fixed it by simply replacing the starter. Need to make sure it is the starter and not the TCT (timing chain tensioner) before replacing starter though. Seem to be a very similar sound and symptoms.
Old 04-13-2009, 12:43 PM
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my friend had such rattle and it turned out to be the driver's side engine mount. Try shaking the engine by pushing on it by the valve cover and see if it has excessive play.
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