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![]() 6A–10 ENGINE MECHANICAL Engine Lacks Power Condition Possible cause Correction Trouble in fuel system Fuel Pressure Control Valve not Replace Fuel injector clogged Clean or replace Fuel pipe clogged Clean Fuel filter clogged or fouled Replace Fuel pump drive circuit not working Correct or replace Fuel tank not sufficiently breathing Clean or replace Water in fuel system Clean Inferior quality fuel in fuel system Use fuel of specified octane rating Powertrain Control Module supplied Correct circuit Throttle Position Sensor cable Correct or replace Throttle Position Sensor defective Replace Mass Airflow Sensor not working Replace Manifold Absolute Pressure Sensor Replace Intake Air Temperature Sensor not Replace Engine Coolant Temperature Sensor Correct or replace Engine Coolant Temperature Sensor Replace Powertrain Control Module defective Replace Trouble in intake or exhaust system Air Cleaner Filter clogged Replace filter element Air duct kinked or flattened Correct or replace Ignition failure ———— Refer to Hard Start Troubleshooting Heat range of spark plug inadequate Install spark plugs of adequate heat Ignition coil defective Replace |