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IMPORTANT INFORMATION
NOTE
[What is engine brake?]
Engine brake is the braking effect that occurs when you release the accelerator
pedal while driving. The lower the gear, the stronger the engine brake.
On an automatic transmission vehicle, engine brake is most effective when the
lockup clutch is engaged connecting the engine directly to the powertrain.
[What is the exhaust brake?]
The exhaust brake is a system that closes the exhaust pipe and uses the force
of the exhaust emissions to enhance the effectiveness of engine brake.
[What is brake fade?]
Frequent use of the brakes can cause the brakes to overheat so that the
frictional force of the friction surface decreases and the brakes become less
effective than normal. This phenomenon is called brake fade.
[What is vapor lock?]
If the brakes overheat due to frequent use, the heat can cause the brake fluid to
boil so that air bubbles are created in the brake hoses.
Pressing the brake pedal simply compresses the air bubbles; pressure is
not transmitted to the wheel cylinders, so the brakes' effectiveness sharply
deteriorates. This phenomenon is called vapor lock.
[What is an engine overrun?]
An engine overrun is an engine-speed increase that causes the tachometer
needle to enter the red zone.
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