I have an 87 ranger 4-Cylinder 5 speed, no acceleration after warm up, pedal almost has to be to the floor to get me to move and then if i drift to lower rpms like just coasting it bucks alot, it runs fine at high rpms and highways speeds.

Thinking its the tps and i want to pull the codes see what i get (how would i do that?), before buying one new for 30$...

Also going to clean the maps because of poor idle after warm up, cold its runs about 1000rpms after about 700 to 500, but at stop lights and such its been diping to like 300 and trying to stall... so dam cold here thought.

Oh yeah im new here, hello.