...pcv hose is most likley cause. Remove the IAC (Idle Air Controller (or Valve)) and either replace it or clean it with ether. Have you replaced a fuel pump? I had to have my fuel pump replace, my fuel ...
...valve, 2 air vaccums, and the light still on, P0172 - System Too Rich (Bank 1) Basically this means that an oxygen sensor in bank 1 detected a rich condition (too little oxygen in the exhaust). On ...
pcv valve hose behind the throttle body you will get a lean Bank 1 and 2. My recommendation in these cases would be to change the PCV valve (helps with your gas milage) and the fuel filter; other than
...pcv valve location Ford Explorer 2002 - 2005 emissions: EVAP canister, PCV valve, & EGR valve (Aviator / Mountaineer) https://www.youtube.com/watch?v=oauwoNVtD8A 02 Ford Explorer PCV ...
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