The drive cycle will only help if the vehicle is failing due to OBD not ready status. You will need to check if there are any other faults !. Most good autoparts store's will read the cars computer for free?
OBD-II Drive Cycle
NOTE:The IAT PID must be between 50-100 F (10-38 C) during the OBD-II drive cycle to enter into all the OBD-II monitors. The FLI PID must be between 15% and 85% at all times.
Drive in stop-and-go traffic with at least 4 idle periods (30 seconds each) while observing the status of the OBD-II monitor on the scan tool. If the Exhaust Gas Recirculation (EGR), Heated Oxygen Sensor (HO2S), Evaporative (EVAP) emission, secondary Air (AIR) (if applicable) or catalyst efficiency monitor have not completed, drive on the highway at a constant speed over 40 mph not to exceed 65 mph for up to 15 minutes. Heavy accelerations, sudden decelerations and wide open throttles are not recommended. If the scan tool sends out a three pulse beep at any time, the OBD-II drive cycle has completed.
NOTE:Vehicles equipped with the EVAP purge flow system or EVAP vapor management flow system monitor do not require EVAP monitor completion to clear the DTC P1000.
If the EGR, HO2S, EVAP, secondary AIR (if applicable) or catalyst efficiency monitor has not completed, perform the corresponding monitor verification drive cycle. See MONITOR REPAIR VERIFICATION DRIVE CYCLES.
Bring the vehicle to a stop and retrieve Continuous Memory DTCs to verify the DTC P1000 has been erased.
Monday, February 9th, 2009 AT 9:07 PM