1999 Ford Expedition "o2 sensor" Questions

o2 sensor 2 scan tool readings only 30 and no fluctuation. What do I look for? changed intake gaskets and spark plugs and boots and both up stream sensors. bank 2 has low readings and no fluctuations.

...o2 sensor, but it was running fine. Now it started misfiring and the shop said the valve covers were leaking oil and all the coils and plugs need replaced. Could it be both or the o2 sensor only, all ...

O2 sensor replaced three times in the past month, now the next day or two after the sensor replacement the light comes back on. The truck has 105,000 miles and is running great and is kept up well. My

O2 sensor wiring diagram 2005 ford expedition I have been going crazy trying to find a wiring diagram for the O2 sensors on my 2005 Ford Expedition. I need to know which wires are the "Signal" wires ...

...o2 sensor codes at same time. Can the sensor be cleaned and where is it? mass flow sensor can be cleaned with mass flow cleaner, but the o2 can not be cleaned. I operate a line that makes oxygen ...

O2 sensor melted the O2 sensor plug in to .. i need to no the the color of the matched wire from the harness to the O2 sensor since the plug is gone , on the front passenger O2 to the harness so i can

codes po122 po155 po135 po102 code po122 is for your throttle position sensor. po155 is for your down stream o2 senor .po135 is for your bank 1 sensor 1 o2 sensor. po102 is for your maf sensor

...o2 sensor turn ratchet counter clockwise and unscrew o2 sensor. start new o2 sensor by hand so as not to cross thread it .tighten with socket and reconnect wires if this is helpful please leave me ...

...o2 sensor on a 99 ford expedition? there is actually 4 o2 sensors all located in the exhaust, one on each manifold or just after the manifold and then there is one before the catalytic converter and ...

...o2 sensor located? I changed air and fuel filters. Low idle control was bad, replaced it. Changing spark plugs, not done yet. Air Filter, Fuel Filter,Plugs,Idles Solenoid or Valve, not the issue. Use ...