Bosch

Diagram ref no 16 and 19

Porsche 928 S2 - 1984 to 1986

Kit contains
2 x Distributor cap
2 x Rotor arm

Porsche 924S - 1986 to 1988 
Porsche 944 2.5ltr 8 valve - 1982 to 1987
Porsche 944 2.7ltr 8 valve - 1988 to 1989
Porsche 944 turbo - 1985 to 1991

Lambda oxygen sensor engine kit - before and after catalytic converter.
Kit includes 4 x Lambda sensors

Fits:
Porsche 986 Boxster 2.7ltr - 2003 Onwards
Porsche 986 Boxster S 3.2ltr - 2003 Onwards

Function:
The Oxygen Sensor (also known as Lambda Sensor) is located in the exhaust manifold and measures the amount of unburned oxygen in your engine's exhaust. Based on the amount of oxygen, it sends a signal to your engine computer which then adjusts the air/fuel mixture for optimum engine performance and emission control.

Failure Symptoms:
• Excessive fuel consumption, a faulty oxygen sensor can waste 30% of your fuel.
• Driveability problems, such as engine surging or hesitation.
• High hydrocarbon emissions, failing an emissions inspection.
• The engine warning light may be on or service flag displayed.
• The ecu/computer stores a mixture-related fault code.
• When the oxygen sensor has stopped functioning completely, the catalytic converter may overheat and fail

Maintenance / Service:
• Test and/or replace every 30,000 miles.
• Perform periodic emission checks.
• Watch for service light.
• Vehicle manufacturers recommend periodic inspection and replacement of oxygen sensor.

Fits:
Porsche 924 - 1980 to 1985

Over time, the spray pattern of older injectors can degrade, leading to incomplete sealing. When fuel is not properly atomized, it may result in symptoms such as slight jerking during acceleration at low RPMs.

Click 'Zoom in' for large parts diagram.
Diagram ref no 26