Question about 2001 Toyota RAV4
My daughter hears a high pitch whistling noise coming from then engine compartment while driving. The noise is heard when the A/C is on. Is there some sort of vacuum operator or vacuum hoses associated with the A/C system?
I have the same problem like yours but what i did is to replace the alternator and now its so quite no more high pitched sound. You may used belt stress fluid but its only last for few seconds then sound comes again. I replaced it with refurbish part alternator.My sienna 2005.
Posted on Feb 04, 2009
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