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


princesa2me
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.

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

johngypsy
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!