I have 1985 V6 it my kids it all of the sudden when cold would act like it was loading up and hesaitate once warm up it seem fine, I have replace the dist/rotor the coolnat sensor on the intake mainfold the plugs and coil it seem a little better for now. They are codes being set from the computer, I known it is in close loop until warm up, the maf seem to be okay I also change out the IAC motor since it hunting for the idle... I guess next i will try a set of wires and the ing-module after that the computer and prom, the o2 sensor look like it never was changed ??? any solutions... I check for vacuum leaks non....no water in the oil nor losing anti-freeze.... puzzled