Engine Performance Diagnostic Table

2013 Dodge and Ram Journey Crew, AWDSECTION Engine Performance Diagnostic Table
WARNING: This page is about a different car, the 2012 Dodge Journey. However, it is still accessible from the selected car via links, so may be relevant.
CONDITION  POSSIBLE CAUSE  CORRECTION 
ENGINE WILL NOT START 1. Weak battery 1. Charge or replace as necessary. Refer to BATTERY, DIAGNOSIS AND TESTING .
2. Corroded or loose battery connections. 2. Clean and tighten battery connections. Refer to CLEANING .
3. Faulty engine starting system. 3. Diagnose engine starting system. Refer to DIAGNOSIS AND TESTING .
4. Faulty coil or control unit. 4. Replace ignition coil. Refer to COIL, IGNITION, REMOVAL .
5. Incorrect spark plug gap. 5. Correct as necessary.
6. Incorrect cam timing. 6. Verify cam timing. Refer to Engine/Valve Timing - Standard Procedure .
7. Dirt or water in fuel system. 7. Clean fuel system.
8. Faulty fuel pump or wiring. 8. Repair or replace as necessary.
9. Faulty Camshaft Position (CMP) sensor. 9. Replace sensor. Refer to SENSOR, CAMSHAFT POSITION, REMOVAL .
10. Faulty Crankshaft Position (CKP) sensor. 10. Replace sensor. Refer to SENSOR, CRANKSHAFT POSITION, REMOVAL .
ENGINE STALLS OR ROUGH IDLE 1. Vacuum leak. 1. Inspect intake manifold and vacuum hoses, repair or replace as necessary.
2. Faulty Crankshaft Position (CKP) sensor. 2. Replace sensor. Refer to SENSOR, CRANKSHAFT POSITION, REMOVAL .
3. Faulty ignition coil. 3. Replace ignition coil. Refer to COIL, IGNITION, REMOVAL .
4. Incorrect cam timing. 4. Verify cam timing. Refer to Engine/Valve Timing - Standard Procedure .
ENGINE LOSS OF POWER 1. Dirty or incorrectly gapped spark plugs. 1. Correct as necessary. Refer to SPARK PLUG, REMOVAL .
2. Dirt or water in fuel system. 2. Clean fuel system.
3. Faulty fuel pump. 3. Replace fuel pump. Refer to MODULE, FUEL PUMP, REMOVAL .
4. Leaking cylinder head gasket. 4. Replace cylinder head gasket. Refer to CYLINDER HEAD, REMOVAL .
5. Low compression. 5. Determine the cause and repair as necessary. Refer to CYLINDER COMBUSTION PRESSURE LEAKAGE .
6. Burned, warped or pitted valves. 6. Replace as necessary. Refer to VALVES, INTAKE AND EXHAUST, REMOVAL .
7. Plugged or restricted exhaust system. 7. Inspect and replace as necessary.
8. Faulty ignition coil. 8. Replace ignition coil. Refer to COIL, IGNITION, REMOVAL .
9. Incorrect cam timing. 9. Verify cam timing. Refer to Engine/Valve Timing - Standard Procedure .
ENGINE MISSES ON ACCELERATION 1. Dirty or incorrectly gapped spark plugs. 1. Correct as necessary. Refer to SPARK PLUG, REMOVAL .
2. Dirt in fuel system. 2. Clean fuel system.
3. Burned, warped or pitted valves. 3. Replace as necessary. Refer to VALVES, INTAKE AND EXHAUST, REMOVAL .
4. Faulty ignition coil. 4. Replace ignition coil. Refer to COIL, IGNITION, REMOVAL .
ENGINE MISSES AT HIGH SPEED 1. Dirty or incorrectly gapped spark plugs. 1. Correct as necessary. Refer to SPARK PLUG, REMOVAL .
4. Faulty ignition coil. 2. Replace ignition coil. Refer to COIL, IGNITION, REMOVAL .
3. Dirt or water in fuel system. 3. Clean fuel system.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.