Mark VII V8-302 5.0L HO (1986)
Compressor/Pump: Customer Interest
Air Suspension - Hum Noise
Article No.
94-21-2
10/19/94
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AIR SUSPENSION - "HUM" NOISE WHEN VEHICLE IS FIRST OCCUPIED AND LEVELING
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NOISE - "HUM" - FROM ENGINE COMPARTMENT WHEN VEHICLE IS FIRST OCCUPIED AND LEVELING - VEHICLES WITH AIR
SUSPENSION
FORD:
1992-94 CROWN VICTORIA
LINCOLN-MERCURY:
1984-92 MARK VII
1984-94 CONTINENTAL
1990-94 TOWN CAR
1992-94 GRAND MARQUIS
1993-94 MARK VIII
ISSUE:
Some vehicles may exhibit a "hum" noise from the engine compartment when the Air Suspension System is leveling the vehicle after it becomes
occupied. This condition may be caused by the compressor isolators not suspending the compressor properly, resulting in a "ground out" condition.
ACTION:
Replace all old compressor isolators with new compressor isolators.
SERVICE PROCEDURES
MARK VIII 1993-1994
1.
Check air compressor assembly to determine if any object or harness (wiring or vacuum harness) is interfering with the free movement of the air
compressor.
2.
With the ignition "on" and the engine "off", lean on the front of the vehicle to activate the suspension air compressor and move the compressor to
determine if the noise concern is coming from the air compressor.
3.
If required, replace all four (4) of the compressor isolators and other related hardware found in the Service Kit (F4LY-5Z205-A).
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Air Suspension Compressor Kit (F4LY-5Z205-A) consists of:
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4 isolators
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4 washers
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4 mounting screws
ALL OTHER SUBJECT VEHICLES
1.
Check air compressor assembly to determine if any object or harness (wiring or vacuum harness) is interfering with the free movement of the air
compressor.
2.
With the ignition "on" and the engine "off", lean on the front of the vehicle to activate the suspension air compressor and move the compressor to
determine if the noise concern is coming from the air compressor.
3.
If required, replace all three (3) of the compressor isolators and other related hardware found in the Service Kit (E4LY-5Z205-A).
