ok i have a 1997 4runner SR5 V-6 I am getting a noise up front and wondering if its normal. Ok so here is the part im trying to figure out. This only happens for about 1-2secs after i pull forward after putting my vehicle from park to drive and driving approx 15ft . It doesnt happen from park to rev no matter how far I go until i put it in drive and drive about 15ft forward. Its kind of a buzz sound like either the ADD system is pressurizing or something to that sort. It typically goes in this format and never happens again until i go from park to drive again. Does anyone know if this is normal and im peranoid or is there a problem or has anyone else seen this? I have searched and no one has mentioned anything like this that I can find.

 

Anyone??

 

The buzzing may be from the evap system.....
https://www.yotatech.com/forums/f2/buzz-under-hood-25450/

There are many threads on here to that extent, just do a quick search for "charcoal canister buzzing".