Tech Tip: Ticking or Knocking Noise Coming from Some Ford Catalytic Converters
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Tech Tip: Ticking or Knocking Noise Coming from Some Ford Catalytic Converters

Some 1997-2003 F-150 vehicles equipped with any engine, and 1997-1998 F-250 LD vehicles equipped with the 5.4L engine, may exhibit a ticking or knocking noise coming from the catalytic converters.

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Some 1997-2003 F-150 vehicles equipped with any engine, and 1997-’98 F-250 LD vehicles equipped with the 5.4L engine, may exhibit a ticking or knocking noise coming from the catalytic converters.

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The noise may be described as sounding like a diesel engine.

The condition will be present when the vehicle is in gear at idle only, and is more pronounced when the vehicle is stationary, such as sitting in a drive-thru line.

The noise is normal, and is created by engine pulses being amplified through the light-off converters.

Do not replace the converters unless loose internal components are found.

To reduce the noise, install a wrap kit (P/N 4L3Z-5E258-AC) on each of the light-off converters. Refer to the instruction sheet included in the kit. 

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Courtesy of IDENTIFIX.

For more information visit: www.identifix.com.

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