HELP !!! Oxygen Regulation Code 1-1-2-3: We have changed the Oxygen Sensor, cleaned the MAS Air Flow and run 91 oct gas, The code still pops up on check system. What else do I have to do in order to remove code and Warning Light?
Cheers,
Larry
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That code will come up if there is a big leak in the system. Check for leaks in the intake, like in the rubber boot to the throttle body, there was a TSB for those cracking on the early cars .
