View Full Version : My 94 toyota Previa whistle when accelerating !?

10-24-2007, 01:10 PM
I need any idea about whats going on. I dont believe my car is happy when is going a high speed. hmmmmm. It happend only when I press the accelerator all the way in. or when is going around 70mph.... where is the high whitling coming from?

big dummy
10-24-2007, 01:13 PM
sounds like a vacuum leak, check all rubber hoses for cracks where they connect, if you find any, cut end of hose if it's long enough to re connect or replace hoses.

12-03-2010, 01:43 AM
If it has the Supercharger, that's probably what it is !

12-23-2012, 07:21 AM
i get the same humming noise also, when im at 60 plus and up to 75mph!

the whissel, or humming noise is 100% perfect, means your supercharger is in its full power, and very healthy state, you forgot to mention it picks up really fast when u smash the gas, thats only the winding sound thats all normal!
hope this helps!