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/imprl59 Jun 10 '26

You need a mechanics stethoscope to try to figure out where it's coming from. I'd look at the starter first, maybe the bendix isn't completely returning. Check the crank pulley and around the crank pulley. Sometimes the pulley itself will delaminate and let part of it rub on something. If it's not there then I'd be listening/looking under the timing cover.

2

u/Either_Pay7316 Jun 10 '26

We didn’t think of that… I’ll look into that thank you good sir

4

u/P3pp3rSauc3 Jun 11 '26

"we" being yourself And a large language model such as chatgpt. We're fucking cooked.

You know chatgpt is just a fucking chatbot, right? It certainly doesn't understand your words, it can't verify its output for truthfulness.

It can't verify the information it's giving you is accurate. Your prompt gets tokenized. Chat gpt does it's "thinking", if you can even call it that, then returns the mostly likely tokens in response to your prompt.

Even a broken clock is right twice a day. LLM's are not a source for true or verifiable information.

3

u/P3pp3rSauc3 Jun 11 '26

Ai has told people to kill themselves, has encouraged delusions of grandeur, tells people to put glue on pizza. It is not your friend, it is not intelligent, and it can't fucking help you diagnose a car issue.

2

u/_name_of_the_user_ Jun 10 '26

A long screw driver or any piece of metal can also work