check engine vacuum leak obd | Ford Explorer Forums
  • Ford Explorer Community - Maintenance - Modifications - Performance Upgrades - Problem Solving - Off-Road - Street

    Explorer Forum Covers the Explorer ST, Explorer Sport, Explorer Sport Trac, Lincoln Aviator,
    Mercury Mountaineer, Mazda Navajo, Ford Ranger, Mazda Pickups, and the Ford Aerostar

    Register Today It's free!

check engine vacuum leak obd

  1. S

    02 Sport check engine light

    Okay so my check engine light came on and I am trying to get the car smogged this week sometime because I am selling it. I ran the codes and its PO171 PO174 so the engine is running too lean on banks 1 and 2. I can hear something that sounds like it could possibly be a vacuum leak but I am...
Back
Top