u/Outlawed_Panda

▲ 3 r/LexusRX350+1 crossposts

2GR FE Knocking Noise

Hello everyone,

I have a 2010 Lexus RX 350 with 210k miles that I assume recently started making a hollow knocking noise. It almost can’t be heard from the top due to the lifters clacking. It’s noticeable from below and is coming from the driver side of the engine (third clip). I need to verify again but I’m pretty sure it increases with rpm’s but not linearly.

My first thoughts were that the crank bearing may be bad because it’s coming from so low in the engine. After some thinking I suspect it might be the torque converter but I may be coping. I’ve had weird acceleration issues where RPMS stay the same but I’m accelerating or decelerating. I chalked it up to VVTI. It’s only happened on one drive but sometimes it would act like it’s in neutral in drive and then grab at like 3500 rpm. I passed that off because since that drive it hasn’t done it again. Regretting ignoring those issues now.

This above my pay grade how ever so I don’t really know. Gonna take it to a shop for a diagnoses. Any chance I won’t need a new engine/transmission?

Engine is up to temp in the video

u/Outlawed_Panda — 1 day ago