acceleration whining noise

I'm having a problem with having a whining noise when I accelerate when I rev in park the noise is gone could this be a transmission problem?

 

Could be in the differential. Is this a stick or automatic?

 

automatic

 

Did someone install a supercharger when you weren't looking?

 

How many miles on your truck? I had a whine from rear of truck and turned out to be pinion bearing (at 225,000 miles).

 

Need more information or video.
Try to find location of noise. You could possibly jack the rear tires up and see if will make the noise with no load and find location For better help.

 

My torque converter and/or transmission pump whine.

 

140k

 

ill get a video tomorrow when i have time to work on it the noise seems to be at the driverside fire wall near brake booster
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I wonder if this is what I'm hearing. I don't know if it's the transfer case or drive shaft but I definitely can hear a difference when accelerating, especially hard acceleration. New to me transmission going from my stock 340E to this 99 4Runner 340F. Both have roughly the same mileage - about 160k.

I do not want to pull the transmission. SOB.

 

Did you ever figure this out?

 

Does this happen when your wife is in the passenger seat ??

 

sure did the hose on the bottom of the vacuum solenoid had a crack