Hissing sound from transmission (only when moving)

not sure if I described it well.. but I have a sound I hear when moving slower. Sure its there at all speeds but that's the only time I can hear it. Its not a grinding or screeching sound... but more like a his or a steady sound …

any thoughts?

97 Tacoma 238k miles

 

A video will help immensely

 

could be low fluid level in trans, could be power steering whine.

 

Alright.. gonna drain and refuel the fluids on the tranny and transfer... any new hotness on fluids that people run on those boxes?

 

Automatic or manual?

 

Auto

 

You hear the noise only when in drive?Does it shift normal? Is it more of a whining type noise like a low on fluid power steering pump?

 

Only in gear. And yes , very similar

 

It sounds like what I just went through. I had a whining noise only in gear. Trans shifted normal. I went with my gut and replaced the torque converter. Noise went away. I wouldn’t let it go too long if you plan to keep the truck.

 

Cost of that repair?

 

I did it myself, replaced the torque converter, front pump seal and rear main seal. I used a Transtar recon torque converter. I spent about $200.00