1999 Ranger 2.5L - P1506 code
Having problem with 1999 Ranger 2.5L. Seems I get code P1506 and scanner is showing EGR and EVAP are INC. Recently replaced head due to crack located between intake and exhaust valves. Dumped and flushed both oil and coolant due to cross contamination. I can clean the IAC sensor but why are my EVAP and EGR showing Inc.?