I have a small vibration sound that my engine makes even when it it turned off. It sounds like it is coming from the driver side by the wheel well but I am not able to track where the sound is.

1996 4runner V6 3.4

 

sounds like it is coming from the brake master cylinder or maybe under it. It is not taking any draw for the battery though because the battery was unhooked and it still had the sound.

 

Do a search and you will find this is normal. This is the charcoal canister venting.

 

It would have been better to say it sounds like "charcoal canister". search that and you should find out about that sound. Do not assume I did not search first, I just had no idea what to search for.

 

That's what I meant. Chill