Ford A4LD Transmission foundin the 1985 to 1995 Aerostar, Ranger, Mustang, Bronco II, and Explorer. Covers transmission assembly, dis-assembly, diagnosis, and troubleshooting. Note: There have been many engineering changes in this transmission since its introduction.
Ford automatic transmission A4LD repair manuals – is a part of Ford repair manuals: Manual and Atomatic Transmissions. This part contains the detailed description of works and all necessary transmission diagrams for Ford Aerostar, Ranger and Explorer automatic transmission A4LD.
Ford automatic transmission A4LD description:
Ford automatic transmission A4LD is a four-speed automatic overdrive transmission with a lockup torque converter. The 3-4/4-3 shift functions and converter clutch lock/unlock are controlled by the EEC-IV processor through a 3-4 shift solenoid and a converter clutch solenoid. The EEC-IV electronically controls the converter clutch solenoid, which hydraulically operates the piston-plate clutch in the torque converter that provides lockup (solid drive) and unlock functions. Ford CVH engine repair manuals The electronics also prevent clutch application in engine modes where noise, vibration or harshness concerns would be most evident in a solid-drive transmission. These modes are: tip-in/tip-out; application of brakes; closed throttle; cold engine; very heavy/wide open throttle; low engine speed to minimize lugging boom; 23.5 inches of mercury absolute barometric pressure or below in the intake manifold. Ford automatic transmission A4LD also provides wide open throttle forced downshifts. When driving in excess of approximately 64 km/h (40 mph) and with the accelerator fully depressed to the floor, the transmission will downshift to second gear for maximum acceleration. If the accelerator is depressed fully to the floor at speeds below 48-56 km/h (30-35 mph) the transmission will downshift to first gear.
- description and operation;
- diagnosis and testing;
- cleaning and inspection;
- removal and installation;
- disassembly and assembly;
- special service tools.
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