Just replace the o2 sensor and egr sensor on 93 f150 5 litre. Cleared the computer, but the check engine light came right back on saying O2 reading lean and EGR sensor low voltage. Not too good with electrics, anyone got ideas on what to check?

 

Did you clear codes after replacing parts - if not follow directions at fordfuelinjection,com, or disconnect negative bat cable for about a minute.
If this doesn't get rid of the light start looking for vacuum leaks - plastic tubing to AC controls and to engine controls.