Buick Regal: Description and Operation
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Cooling Fan Description and Operation
System Overview
The engine cooling fan system consists of 2 electric cooling fans and 3 fan
relays. The cooling fan relays
are arranged in a series/parallel (S/P) configuration. This allows the engin
Cooling System Description and Operation
Engine Coolant Indicators
The instrument panel cluster (IPC) shows the engine temperature on the
temperature gauge. The
value is sent on the data communication line from engine control module (EC
Firing Order and Cylinder Identification
NOTE: This information is intended as a quick reference for firing
order and
cylinder identification only. The information provided covers many
vehicles and may include some information that does not
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Brake Pedal Position Sensor Calibration
Calibration Criteria
NOTE: Do not apply the brake pedal during the brake pedal position
sensor
calibration procedure. Any movement of the brake pedal during this
procedure will cause the calibration procedure to fail. If this occurs, the
brake pedal position sensor calibration must be repeated.
Bra
Fuel System Description
Fuel System Overview
The fuel system is an electronic returnless on-demand design. The returnless
fuel system reduces the
internal temperature of the fuel tank by not returning hot fuel from the engine
to the fuel tank. Reducing
the internal temperature of the fuel tank results in lower evaporativ
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