Engine Noisy engine sound

your car doesn't have a timing belt, sound like you are starting to signs of MAF sensor failure, you should get some contact cleaner and clean it out.

Noisy engine sound

Recently I noticed that my car is getting noisy than before, after I open the hood, the engine part sound more louder than before, do you guys know what caused it? I thought it was the timing belt, but then when I listened closely, I think the sound came from the engine itself....so...I don't know....which part i need to replace

Also if I when I'm in idle(ex. stop at an intersection, my steering wheel shakes) <= This only happens like 10 or 20 mins after I start the car, and the shaking graduately become less shaky afterwards..

by the way, I have a 01 corolla with 90K on it, everything from my car are originals, I didn't add anything to it...ex. intake, exhaust..etc.

Thank you guys

Oh okay~ Thank you!! I'll clean it this weekend, and see if that's the problem

since you have 90kmiles i'll recommend doing a tune up.

souds like chain play, possibly timing chain tensioner, 90K sounds about right

I cleaned both the MAF and IAT sensors, but it's still kind of noisy.help...

is it like a clackety sound? at idle?

It could also mean that you might need a valve adjustment.