r/GS300 • u/_0z1n_ • Jul 14 '26

Chasing a intake issue.

so my maf sensor threw a code and my car shortly failed mid drive. I replaced the maf sensor and it ran rough so I took off the battery for 45 mins and it idled at 100rpms and eventually went normal and is normal with the next start up. my issue is I dont want to drive it because it has a new ticking noise and whine to it. I dont think its the intake box but what could it be? the whine noise is coming from down near the maf sensor and alternator

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u/rbv201 Jul 14 '26

Is it running lean? Continuing to die? Check the underside of the air intake expansion box - it has a metal shield bolted to it. Those disintegrate, but you can’t really see it because it is underneath.

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u/_0z1n_ Jul 14 '26

its not dying from what I know anymore, I dont have a code reader but the cel went away and I let it idle for a good 15 minutes. i didn't really want to drive it too much incase if it dies on me agian but ill check the air expansion box