I have a 92 tercel big problem and im puzzled

What is your question?

if I drive it for 30 to 45 minutes the check engine light comes on if im drivin 55 it slowes down to 30 and when you mash the peddle to the floor it falls on its nose but at half throttle it feels as if it runs fine but still won't get over 30 mph when you completely let off the gas peddle it runs rough and when you give it gas from a stop it will almost die then it picks up and if you cut the car off for 20 minutes the engine light will be off and the car runs fine until the light comes back on and if you cross out the TE1 and E1 it won't read any codes. Its a 4 speed manual and a 3E 1.5