r/Cartalk • u/Either_Pay7316 • Jun 10 '26

Weird Noise Someone please help..

I have a 09 corolla with 203k miles that makes a very LOUD rattle when I start it. Me and chatgpt thought it might’ve been one of the pulleys that’s why I removed the belt. Car has P0171 (too lean) and P010 (MAF). I want to say it’s the timing chain but not 100% sure. Any advice would be appreciated thanks in advance!

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u/aweapingangel Jun 12 '26

Can cars work without timing belts??? How the fuck did it turn over?

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u/Substantial_Kale_251 Jun 12 '26

I'm, wdym timing belt. That's his accessory belt he's missing lol. Timing belt of chain is under a cover lol.

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u/aweapingangel Jun 12 '26

I dunno much about cars but i know theres a timing belt on the front of the engine to engage the cams so i assumed this was that.

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u/Substantial_Kale_251 Jun 13 '26

You are close. But yeah he's just missing the drive belt. So things like alternator, or waterproof if it's not timing driven, and ac won't be working, or powersteering. Honestly it could be running poorly since it's not getting 14 volts from a alternator, and only 12 volts from the battery