Redhawk

what are the odds! pulled into NAPA auto parts to get a new cps and look what i pulled up next to.

sorry it will not rotate tried every thing i could. pic is correct in the computer

1988 swb smoke grey base model 4.0 L 5spd Seale al ( Purchased in Columbus, Ga) original owner

ok grounds tested cleaned everything else done. put the old o2 back in and it runs right again. must be the after market sensor? also cleared the memory may have helped. but all in all great site and thanks cruse54 and all others for there help.

Tune up done a few weeks ago everything replaced. Recleaned the ilc. What is cruse54. Com

question for the collective? my 88 4.0 L fuel economy is bad i started driving it regularly due to the F 350 super duty costing an arm and leg to drive. motor has roughly 150, miles on it (original motor). my issue is i noticed the cold start idle was searching for an idle. not bad but noticeable. and power was lacking on the highway. reading that the O2 sensor controls the fuel and spark and i have not ever swapped it out i changed it this weekend now the thing almost dies searching for idle. quits searching after it warms up and power is back. so how do you do diagnostic on this non OBD2 computer?