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6E–462 6VE1 3.5 ENGINE DRIVEABILITY AND EMISSIONS Lack of Power, Sluggish, or Spongy Symptoms (Cont'd) Step No Yes Value(s) Action 10 1. Remove the spark plugs and check for wet plugs, cracks, wear, improper gap, burned electrodes, or Electronic Ignition System. NOTE: If spark plugs are gas or oil fouled, the cause of 2. If a problem is found, repair as necessary. Was a problem found? — Verify repair Go to Step 11 11 1. Check the ignition coils for cracks or carbon tracking. 2. If a problem is found, repair as necessary. Was a problem found? — Verify repair Go to Step 12 12 1. Check the PCM grounds for cleanliness, tightness and proper locations. Refer to the PCM wiring Electrical Diagnosis. 2. If a problem is found, repair as necessary. Was a problem found? — Verify repair Go to Step 13 13 1. Check the exhaust system for possible restriction: D Inspect the exhaust system for damaged or D Inspect the muffler for heat distress or possible D Check for a possible plugged three-way Restricted Exhaust System Check. 2. If a problem is found, repair as necessary. Was a problem found? — Verify repair Go to Step 15 14 1. Check the torque converter clutch (TCC) for proper operation. Refer to 4L30-E Transmission Diagnosis. 2. If a problem is found, repair as necessary. Was a problem found? — Verify repair Go to Step 15 15 1. Check for an engine mechanical problem. Check for low compression, incorrect or worn camshaft, Engine Mechanical. 2. If a problem is found, repair as necessary. Was a problem found? — Verify repair Go to Step 16 16 1. Review all diagnostic procedures within this table. malfunctions have been found, review/inspect the D Visual/physical inspection D Tech 2 data D Freeze Frame data/Failure Records buffer D All electrical connections within a suspected 3. If a problem is found, repair as necessary. Was a problem found? — Verify repair Contact Technical Assistance |