What is the drive cycle of a 2002 Jeep Liberty?

  • Thread starter Thread starter GreasyGato79
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GreasyGato79

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The "check engine" light came on and I replaced the gas cap, unhooked the negative terminal on my battery to reset the light, and according to a web site, I should wait until the drive cycle is over to see if the light comes back on. How will I know when the I have gone through a drive cycle? Is it a certain amount of miles? Please help.
 
start engine, drive until it is properly warmed up to normal operating temperature, usually about 15-20 minutes, then turn off engine.
 
When the vehicle sits over night the temperature sensors normalize at or near the same value.
When you start and run the vehicle it initiates the evaporative system test which can take up to 10 min approximately.
It may take three of these drive cycles (if it detects a leak) to set a hard fault that will turn the check engine light on.
 
start engine, drive until it is properly warmed up to normal operating temperature, usually about 15-20 minutes, then turn off engine.
 
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