F 150 2WD Pickup V8-5.4L SOHC VIN 3 (1999)
Catalytic Converter: Technical Service Bulletins
Exhaust System - Catalytic Converter Ticking/Knocking
TSB 04-20-6
10/18/04
TICKING OR KNOCKING NOISE COMING FROM THE
CATALYTIC CONVERTERS
FORD:
1997-1998 F-250 LD
1997-2003 F-150
ISSUE
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. 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-through line. The noise is normal, and
is created by engine pulses being amplified through the light-off converters.
ACTION
DO NOT replace converters unless loose internal components are found. To reduce the noise, install a wrap kit on each of the light-off converters. Refer
to the instruction sheet included in the kit.
WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage And Emissions Warranty Coverage
Parts Block
OPERATION
DESCRIPTION
TIME
042006A
Install Wrap Kit On Both
0.7 Hr.
Light-Off Converters
(Includes Time To Perform
Road Test)
DEALER CODING
CONDITION
BASIC PART NO.
CODE
5E212
42
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