jst cruz,keep getting codes 1132 and 1152 running rich in upstream according to all scanners hooked up.i replaced all 3 02 sensors,dpfe sensor,fuel filter,egr valve,vacuum lines,cleaned throttle bady and idle air control valve.keep resetting computer and it keeps throwing cel on and reads same codes still.truck rund smooth no smoke or acting funny.checked voltage at tps sensor and its within specs.dont know what else to do and this truck is getting me frustrated.any ideas would be great