1990 Ford F-150 Q&A
1990 Ford F-150 Question: OXYGEN SENSOR
My engine light came on and I took the truck to the garage,and they put an oxygen sensor in.The light went off and came back on, about one hour later.It has done this 3 times now.An oxygen sensor was put in each time.The light still comes back on saying oxygen sensor.What could be the problem? - tomlrrp
Are they fitting an Original Equipment type sensor or a one size fits all sensor. Sometimes aftermarket sensors they you have to cut and solder wires on to get them to work end up costing you time and money in the end. I always use direct fit sensors. - patrick mannion
I had an oxygen sensor issue that caused the check engine light to come on repeatedly. It would stay on intermittently. Also, when I got the vehicle inspected they told me that the dashboard indicator light for my parking brake was out. I bought an oxygen sensor to replace (Bank2 sensor1) which was shown on the computer. I solved all of my problems by simply jiggling the old O2 sensor wire a little. I guess it was loose. Didn't even need a sensor. Not only did check engine light go off, the parking brake light now works as well. Go to your local auto parts store and ask where the O2 sensor is, then check that it is not loose. I have still had no trouble with it 6 months later. - Visitor
unhook your native battery cable and wait a few minutes and replace battery cable this will erase all trouble codes the computer may have in memory. You may not have a problem. - Visitor
Repeated failure of supply side 02 sensors is usually caused by a bad vapor recovery system canister, or it's purge valve. Neither part is expensive, but unfortunately it is not instrumented to produce a code, so you have to go through this process which is expensive. The same problem often also produces errant 'Tighten Gas Cap' codes, did you also have that issue? - Visitor
how many oxygen sensors
...it to an auto parts store for analysis. They plugged in the diagnostic and told me it was my oxygen sensor. Now upon further research I found out I have more than one. What are the codes for which ox...
Where do the wires from the oxygen sensor go to?
...ump and it smoked for awhile, but it turns free now.But my engine light keeps coming on saying oxygen sensor.I replaced the oxygen sensor 3 times now but the light still comes on saying oxygen sensor.Wha...
Is bank 1 left or right, and sensor 1 pre-cat? I have a P0133 code.