Hesitation, Sag, Stumble

WARNING: This page is about a different variant/trim than selected.

Test the fuel pressure. Refer to Fuel System Diagnosis .
Inspect the mass air flow (MAF) sensor for obstruction, contamination, and damage. Refer to Intake Air Pressure and Temperature Sensor Replacement .
Test the generator. Refer to Symptoms - Engine Electrical . Repair the charging system if the generator output voltage is less than 9 V or more than 16 V.
Test the manifold absolute pressure (MAP) sensor. Refer to DTC P0106 .
Inspect for excessive crankshaft endplay that will cause the crankshaft position sensor reluctor wheel to move out of alignment with the crankshaft position sensor. Refer to Crankshaft and Bearing Cleaning and Inspection and Engine Mechanical Specifications .

NOTE:

The following actions may need to be repeated in order to verify an intermittent intake or exhaust camshaft actuator condition.

Engine warm and idling, verify the correct operation of the camshaft actuator system. Command the intake and exhaust camshaft actuators from 0 degrees to 20 degrees and back to zero while observing the scan tool Intake Camshaft Position Variance and Exhaust Camshaft Position Variance parameters. Each parameter should be less than 2 degrees in each of the commanded states.
- If any of the parameters is greater than 2 degrees, inspect the suspect camshaft actuator and camshaft actuator solenoid valve and valve bore for contamination, obstruction, and damage. Refer to Camshaft Position Actuator Exhaust Solenoid Valve Replacement , Camshaft Position Actuator Intake Solenoid Valve Replacement and Camshaft Actuator System Description .