How do I reset the Drive Cycle for my 1999 Mercury Villager to pass emissions?
What is your question?
My vehicle has failed smog twice after recommended repairs were made. It has been diagnosed by 2 different smog repair shops has to having a bad front catalytic converter which is obsolete now and no after market parts fit it, but a 3rd smog shop tested it and it says my catalytic converter is fine. They reset my monitors and told me to drive it 25 miles and then take it to be smogged because it showed 2 knock sensors were present. what steps do i take to reset the drive cycle for my vehicle?
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Hello,
If the technician said to drive it 25 miles for a reset, hopefully they referenced the reset conditions for the trouble codes that were set.
The OBD trouble codes each have their individual requirements to be stored, and their own individual requirements to clear themselves.
A drive cycle is starting the engine, driving, then turning off the engine.
Resetting diagnostic codes may take 5 drive cycles, 20 drive cycles, or may not be related to drive cycles.
If you have the OBD trouble codes that are stored or pending I can tell you what must be done to clear them. You can also clear them with a code reader from an auto parts store.
