O2 Sensor 4.6L
Posting Guru
Joined: Jul 2003
Posts: 1,978
Likes: 1
From: Alvin, Texas.
O2 sensors only measure oxygen in exhaust (simple enough), they can't tell why or where that oxygen is getting into the exhaust. Pretty much age/dirt calls for the O2 being the actual *cause* of emissions issues.
(The above needs to be sticky material--saves many noobs money, I bet.)
Lean mix can also come from bad fuel filter or pump. Anything that can cause lowered fuel output needs to be checked.
(The above needs to be sticky material--saves many noobs money, I bet.)
Lean mix can also come from bad fuel filter or pump. Anything that can cause lowered fuel output needs to be checked.
