View Full Version : Ford 4.2

01-03-2012, 10:18 PM
Changed the O2 sensors, plugs and wires. Tripped the Ign 3 times after battery was disconnected for 1 hour. 30 mins later check engine light came on. OBS said passenger oxy was gone. Any info?

01-03-2012, 11:02 PM
i have heard on more than one occasion that people have gotten bad oxy sensors out of the box maybe take it back and try another one ?

01-03-2012, 11:10 PM
Tks. Was the previous error before we changed the 02's and it was gone for awhile.

01-04-2012, 06:07 PM
check the wire to make sure its not shorted?

01-04-2012, 07:26 PM
All brand new shit yesterday, and harness was fine.