so today i was getting ready to go to school started my truck put it in drive hit the gas a little bit truck moved very very slow so put it in neutral waited a couple of secs and put it back in drive and it was fine got in the truck after school it did the same thing so put it in neutral and waited again and it was fine so get home check fluid it is fine i smelled the fluid it smelled very bad so had my dad smell it he said that the fluid smelled burnt.. he said to drop the pan and change the fluid and filter but i was looking on youtube and i want to know how to "flush" the fluid and would i be able to do it.

thanks,
cam

 

oh and its 93 w150 318 overdrive tranny and i have a 14 bolt oil pan

 

I wouldn't flush it. A worn auto transmission relies on dirty fluid to have enough grip. New clean fluid would probably slip worse. I would try some lucas transmission fix first. What you are experiencing isn't uncommon. As the truck sits, fluid drains out of the torque converter, and it only pumps to fill it back up when its in gear or neutral (not park). My truck does the exact same thing when it sits for at least a day. To change the fluid, I think you just drop the pan. But again, I think that will only aggravate your problem.

 

If you also loosen your valve body more will drain out
USe only ATF-4
Adjust your bands while the pan is off
A transgo reprogramming kit will charge the converter in Park (not just N)
Flushing is a waste of money
Take your return cooler line off and make sure there is good flow

 

2nd gen lurker here.

Draining and tightening bands may go a long way in pushing the trans to last longer.