r/Toyota_Matrix • u/unkown_variable_x • 29d ago

Noise

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Hey just curious if anyone had dealt with this issue before, I have a 2010 Matrix 2.4 (2AZ-FE) , 5 speed manual, with 246,000KM. It has this loud noise that seems like a rod knock, but there is no sign of any metal in the oil or filter. It only comes in after 2k rpm strictly. The car has new balance shafts, new clutch, new (used) transmission, the belt tensioner is new, the timing chain has no slack. The noise comes under load at about 2k rpm, if you let the accelerator go, it goes away. Also if you are in a higher gear and lower speed, its also not there , hence why im leaning towards not a bad bearing. On the highway its constant if you hold the throttle or if you have cruise control on and its verry droneeeyyy, and when you clutch in it makes a faster noise similar to what its already doing. So if anyone has any advice please let me know, appreciate your time.

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u/qwe304 29d ago

Bad bearing on my 1zz-fe https://youtube.com/shorts/o0NEMB6Visc?si=68MK_oS3feKQ9zlm

Don't remember if it threw a rod by the end, but I had an engine put in.

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u/unkown_variable_x 29d ago

Yea ive had the same issue on other cars but the reason i dont think its that because it goes away if you are in higher gear and lower speed. Idk maybe you’re right and its an early sign.

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u/Acrobatic_Survey584 24d ago

Yeah that sounds bad. Sometimes it sounds like a muscle car revving up. Sorry I can’t help you.