Have changed both bank one o2 sensors and the engine light is still on. What else can it be or what else do we need to check or test?
Oct 17, 2011 at 4:01 PM
engine light still on after changing o2 sensors on 1999 ford explorer
1999 FORD EXPLORER
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Did you check for codes? What was the actual code? The code doesn't tell you what to replace just that the system thinks there is a problem on that circuit, somewhere.
Oct 17, 2011 at 4:05 PM
It comes up code P0135.
Oct 17, 2011 at 4:07 PM
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Any driveability issues? Did you check the 02 heater circuit?
Oct 17, 2011 at 4:20 PM
Is the 02 heater circuit a different part than the o2 sensor? We have changed o2 sensors on bank 1 and 2....sensor one. It only has one sensor 2 on bank 2.
Oct 17, 2011 at 4:30 PM
The heater circuit is part of the sensor. I'm talking about the electrical circuit. What's the litre size of engine?
Oct 17, 2011 at 4:42 PM
4.0 and Vin code is x
Oct 17, 2011 at 4:48 PM
At the 02 sensor connector, lite blue wire with orange tracer is voltage, with the key on, any voltage? If not, that circuit is fuse protected.
Oct 17, 2011 at 5:05 PM
Will check that this evening. Will let ya know.....thanks so much!
Oct 17, 2011 at 5:24 PM
Like I said, check for voltage.
Oct 17, 2011 at 6:12 PM
Thank you! I will check tonight.
Oct 17, 2011 at 6:14 PM
Let us know what you find.
Oct 17, 2011 at 6:27 PM
Last night we changed a 15 amp fuse in the engine compartment and then cleared the code. So far the engine light has not come back on.
Oct 18, 2011 at 2:55 PM
Sounds like you got going your way, good job.
Oct 18, 2011 at 3:24 PM