Hi I have a 2000 ford expedition 4.6 2wd . It keeps bogging down when I come to a stop light or when I slow down and try to accelerate again. But it only does this under a quarter tank of gas when I fill her up she runs fine.I've replaced the fuel pump,air filter,fuel filter,cleaned the maf sensor,changed the plugs ,cats were clogged so I also changed those . Check engine light is on and its showing an o2 sensor reading lean and low voltage. Please help

Asked by Mar 11, 2013 at 04:38 PM

Question type: Maintenance & Repair

3 Answers

28,845

if its reading lean check for vacuum leaks. does it have lean codes for both banks or just 1?

Only 1 bank 1

28,845

It may just be a bad 02 sensor in that case.

Your Answer

Shortcuts

Maintenance & Repair Experts

  • #1
    Tom Demyan
    Reputation
    184,610
  • #2
    dandyoun
    Reputation
    96,870
  • #3
    tennisshoes
    Reputation
    81,570
View All

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.