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Automatic Adjuster

A drum-brake mechanism that adjusts the lining clearance as wear occurs. It is commonly actuated on reverse stops or when the parking brake is set.

Automatic Chassis Lubrication (ACL)

A system where the chassis is automatically lubricated at predetermined intervals.

Automatic Choke

A mechanism that positions the choke valve automatically in accordance with engine temperature.

Automatic Control

1. A dial on the instrument panel that is set at a desired temperature level to control the condition of the air automatically. 2. Any system that reacts to a predetermined condition rather than responding to external commands. 3. Also known as auto control.

Automatic Door Locks

A passive system used to lock all doors when the required conditions are met. Many systems lock the doors when the gear selector is placed in drive, the ignition switch is in RUN, and all doors are properly shut.

Automatic Headlight Dimming

Automatically switches the headlights from high beams to low beams under two different conditions when light from oncoming vehicles strikes the photocell-amplifier, or light from the taillights of a vehicle being passed strikes the photocell-amplifier.

Automatic Idle Speed Motor

The output control device used by Chrysler to increase or decrease engine idle speed.

Automatic Ignition

A condition where the engine continues to run after the ignition has been shut off. Often called dieseling or running on. Also known as auto ignition.

Automatic Level Control

A shock-absorber system operated by air pressure and provided as an accessory on some vehicles to automatically maintain the correct riding height under various load conditions.

Automatic On/off With Time Delay

1. To turn on the headlights automatically when ambient light decreases to a predetermined level. 2. To allow the headlights to remain on for a certain amount of time after the vehicle has been turned off.

Automatic Probe Calibration

A procedure to allow a device to adjust internally to compensate for resistance variations between probes.

Automatic Shut-down Relay

The relay used by Chrysler to feed ignition voltage to the fuel pump, ignition system and the injectors.

Automatic Steering Effect

The tendency of a vehicle to travel straight out of a turn when the steering wheel is released.

Automatic Temperature Control (ATC)

An air-conditioner control system designed to maintain a pre-selected, in-car temperature and humidy level automatically.

Automatic Tensioning

The constant tension of a device, maintained at a proper value by some automatic means; to minimize the attention required.

Automatic Traction Control

A system that automaticlly prevents slippage of one of the drive wheels.

Automatic Transmission (AT, A/T)

A transmission in which gear ratios are changed automatically.

Automatic Transmission Cooler

A device, often found in the radiator, through which automatic transmission fluid circulates to be cooled by surrounding air or engine coolant.

Automatic Transmission Fluid (AFT)

A red, petroleum-based fluid used to transfer power and control, lubricate, cool, and clean the automatic transmission.

Automatic Transmission Rebuilders Association (ATRA)

A trade association for transmission repair shops, technicians, and suppliers of transmission repair equipment, parts, and tools.