I have a '95 Bronco that runs well, but the Check light came on this evening on the way home.
We all know that Jeeps can flash the Check light to derive the stored code if the ignition is cycled on and off 5 times quickly and left on. How does Ford accomplish this test mode?
Jeff Strickland did pass the time by typing:
96 started the OBD-II. Not sure about 95I'd ask here
Thanks Doug, I did ask over there. This group seems to have a better grip on this sort of stuff though. And, OBD I is in my Bronco.
My local parts store "said" they can't read my EEC4, but they have a tool for $35 that can. I bought the tool.
It says that the Bank 1 Heated Exhaust Gas Oxygen sensor (is this the same as the O2 Sensor?) detects a lean condition.
My Bronco has 120k miles, of which I racked up 200 of them, so I have no problem with the notion that the O2 Sensor, Bank 1, is bad. My truck did pass smog, twice, in the past 6 weeks or so.
Jeff Strickland did pass the time by typing:
Yep.
I've found the O2 sensor can have a dramatic impact on economy. When they start to drift the engine usually runs rich. I'd check the connectors though.
That would be logical. Might want to change all of them out, if one is going bad the others may soon follow.
No wonder California has smog problems. :-)
No, the scan tool only has a blinking light and a buzzer that can be switched off -- the buzzer operats in tandem with the light, so one can count the buzzes instead of the flashes.
Once the code is known, there is an extensive list of codes to look through.
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