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97-15-24
  • NOISE - "BOOMING" - VIBRATION OR BOOM OFF IDLE AT ENGINE SPEEDS BETWEEN 650 RPMS AND 1100 RPMS AT VERY LOW VEHICLE SPEEDS
  • VIBRATION - VIBRATION OR BOOM OFF IDLE AT ENGINE SPEEDS BETWEEN 650 RPMS AND 1100 RPMS AT VERY LOW VEHICLE SPEEDS
Publication Date: JULY 21, 1997

LIGHT TRUCK:
1997 F-150, F-250

ISSUE:

Some vehicles with the exhaust outlet in front of the rear wheel may experience a vibration and/or "booming" noise at off idle engine speeds between 650 and 1100 rpms at a very low vehicle speed. This may be caused by engine firing frequencies aligning with resonance frequencies of the exhaust system.

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