LexusGuy91

Hi

I have a 1991 Lexus LS400 with 210k miles on it and recently I've noticed that it has started to make these two strange noises. I took videos of the noises and will post them below.

One of them sounds similar to a supercharger whine. It gets louder as I push on the accelerator. Is this the sound of a loose timing belt?

The second is a strange noise that sounds like my transmission is whining. As far as I know, it only happens when I'm going very slowly (forwards or backwards) in my driveway or entering my garage which is on a very slight incline.

Does anyone know what these sounds are and what needs to be fixed?


Thanks


1st noise, accelerator noise


2nd noise, transmission whine



If you need me to make more videos to better diagnose the problem (such as one with the hood open) please let me know

dicer

So far I just listened to the first one. Please don't throttle it up and down. Hold it steady state at the point it makes the noise. All we hear is an engine reving up and down with an occasional noise.


The second one sounds like transmission pump cavitating, likely causes are low transmission fluid level, restricted filter or screen, pump is sucking air, pump is worn out. That may also be the first noise too can't tell.

YoshiMan

Any problems with the power steering? The second video sounds like a P/S pump that is either low on fluid, or dying, or both.

dicer

Yeah I didn't even think of that one.