Ok here's what happened. I changed the rack and pinion,upper and lower ball joints, and the tire rods. Put it all back together, hooked up the battery and it started missing and eventually quit running. Tried cranking it and it kept backfiring. Let it sit for a hour and it cranked up but still ran like scrap. Changed plugs, wires, coil, cap, rotor, and fuel filter. Still same thing. Im Lost......... Ow one other thing, when I cranked it up after I installed the rack and pinion it had a exhaust leak. The #2 o2 sensor is behind it, do u think that could cause it to run rich or lean.