99 tacoma problems shifting until engin warm ?? Help!

Got a 99 tacoma 5 lug with 2.4 auto. In the mornings, or when it sits, its hard to shift. Engin will rev when first starting out, then shift into second , rev until warm then shift into third. Once up to temp, seems to shift good. I have let it warm up for about 10 min before driving, and does fine

 

When was the last tranny fluid change/how many miles on the current fluid?

I had a '99 prerunner auto that when this happened the transmission pooped the bed very shortly afterwards. That said, that transmission was rode hard a couple times pulling too much weight & hadn't had a fluid change in way too long.

 

How’s the fluid level?
Has the fluid ever been changed?

 

Fluid is good, not brown or burnt. Previous owner had Fluid changed at 60k at dealership.

 

How many miles are on the truck now?

 

Truck has 123k

 

No check engine light, doesn't leak a drop of anything...

 

I have a 2000 Tacoma with 145000 miles. Mine used to do that. I changed the transmission fluid and had it flushed out, still did it. Then changed it the fluid to Royal purple and it still did it. After many years of this I had a mechanic tell me to go back with the recommended transmission fluid from Toyota and to put transmission additive in it. It's been several years but I think he told me to use trans X. After I did that the truck went back to shifting normal.

 

Are you saying you put in a new transmission?

 

No, just changed the transmission fluid with Toyota spec transmission fluid and put in that additive

 

Mine does it too 2002 with the a340f tranny with 370k it likes a minimum temp before it wants to shift into 3rd this only happens when its below freezing and not warmed up