my 93 4runner runs like crap it jerks and stumbles and stalls. i can drive it if i baby it and dont push the gas very much but even then it still stumbles. i have changed plugs plug wires cap rotor ignition control module and igniter o2 sensor and the afm was replaced too. im lost i dont know what else to do please help.

 

Check for Fuel Pressure, also, check timing; belt, Harmonic Balancer, & and ignition position, they should match with each other at TDC 10 - 12 degrees on the Harmonic Balancer, timing marks on the cam sprockets should be aligned properly, and the ignition should be ready to spark #1 Piston, if not, you have a timing issue most likely caused by the belt stretching out. Check for cylinder pressure too, the head gaskets may be blown.

 

Hasn't been on here for awhile, maybe it's fixed.