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System Performance Check (CARBURETED Models)

This check verifies that computerized engine control system is functioning correctly. This check should always be made after any repair of computerized engine control system. Performance check chart can be found by proceeding to appropriate SYSTEM PERFORMANCE CHECK chart for that system type.

When performing this check, always engage parking brake and block DRIVE wheels. Parking brake on front-wheel drive models does NOT hold drive wheels.

NOTE: On some engines, oxygen sensor will cool off after only a short period of time while engine is idling. This will cause engine to go into open loop. To restore closed loop mode, run engine at part throttle several minutes and accelerate from idle to part throttle several times.
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