are the o2 sensors hard to replace on 2002 ford f150 4.2 engine? thats what auto zones printout said o2 sensor is keeping engine light on im going to try and replace sensors myself any help would be appreciated someone said that i could try adding' seafoam addative to gas to clean sensors. thanks again.
the printout from Auto zone tells you that there is a probelm with fuel mixture control, this doesn't always mean the O2 sensors are defective, intake leaks and iother factors can give O2 codes, give me the code you have and i will let you know the most likely problem.