Gets warm engine, stalls and catchs. Won't go over 40mph.

[Nasty Habit]

When I start my 94 explorer, it will not engage the auto choke some times. Idles up and down. When it gets warm, engine. It will stall, if you feather the throttle, it will catch.

 

[Turdle]

You might clean your iac valve

 

[410Fortune]

clean the mas air flow sensor too
Any check engine light?
Hoe
Many miles? quite possibly leaking intake gaskets