Bronco Full Size L6-300 4.9L (1987)
NOTE:
THE TIE STRAP MUST BE SECURED TIGHTLY.
3.
Drive the vehicle to verify that the "low end knock" is eliminated.
4.
If the "low end knock" is NOT eliminated, check the following items for possible sources of the noise.
^
Clutch lines - Check to see if they are loose in the bracket.
^
Brake lines - Look for loose lines striking against the frame.
^
Automatic transmission dip stick tube - Check for interference with the thermactor downstream air tube.
^
EGR valves being noisy - Disconnect the vacuum supply to verify. Replace as needed.
^
Transmission and engine mounts - Loosen and retighten to specification to neutralize mounts.
^
Fuel lines - Confirm that they are not striking the rocker arm cover.
^
Protrusions on the piston head - Engine build dates of 1/90 through 12/90 - Disconnect the spout wire. If the noise changes, remove the
cylinder head and check for protrusions or pimples on top of the piston. Remove protrusions if found.
PART NUMBER
PART NAME
CLASS
95873-S
Tie Strap
C
OTHER APPLICABLE ARTICLES: NONE
SUPERSEDES: 92-13-17
WARRANTY STATUS:
Eligible Under Bumper To Bumper For 1992/93 Models, Basic Warranty Coverage For All Other Models
OPERATION DESCRIPTION
TIME
930210A
Econoline
0.7 Hrs.
930210A
F 150-350/Bronco
0.6 Hrs.
DEALER CODING
BASIC PART NO.
CONDITION CODE
9A758
79
OASIS CODES:
497000, 702000, 702100, 702300