A/T - AOD Buzzing At Idle/Grunting During Tip-In
89ford35Article No. 89-23-6
^ NOISE - "BUZZING" AT IDLE OR "GRUNTING" DURING THROTTLE TIP-IN - VEHICLES WITH AOD TRANSMISSION
^ TRANSMISSION - AOD - "BUZZING" SOUND AT IDLE AND/OR "GRUNTING" SOUND DURING THROTTLE TIP-IN
FORD: 1989 CROWN VICTORIA, MUSTANG, THUNDERBIRD
LINCOLN-MERCURY: 1989 COUGAR, GRAND MARQUIS, MARK VII, TOWN CAR
LIGHT TRUCK: 1989 BRONCO, ECONOLINE, F-150, F-250
ISSUE: A "buzzing" noise at idle or a "grunting" noise during throttle tip-in may be caused by throttle valve fluid oscillation. The "grunting" noise may be accompanied by a slight vibration felt through the accelerator pedal.
ACTION: Install a main control gasket kit (E9AZ-7D100-B).
The kit contains the following items.
^ A revised separator plate lower gasket (7D100)
^ Three different throttle valve springs
^ Instructions for selecting the proper throttle valve spring.
PART NUMBER PART NAME CLASS
E9AZ-7D100-B Main Control Gasket Kit B
OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: Eligible Under Basic Warranty Coverage, Major Component Warranty Coverage, Powertrain Warranty Coverage
OPERATION DESCRIPTION TIME
892306A Install Main Control Gasket 1.9 Hrs.
Kit
DEALER CODING
BASIC PART NO. CONDITION CODE
7A100 56
OASIS CODES: 5104, 5500, 7100, 7113, 7210