FIAT 124 Spider
Engine Maintenance + Modification
45
5.9 Component Reference
The following pages contain sketches and part numbers for the various fuel injection
system components and brief descriptions of each.
Table 3: Major Fuel Injection System Components
Component Description
Lambda Sensor
P/N 0 258 001 051
The lambda sensor meters the presence of oxygen in the exhaust gases and
reports the level of oxygen to the ECU. It is located in the exhaust system
before the catalytic convertor.
Failure of this sensor will occur at approximately 30,000 miles or sooner on a
poorly operating engine and will result in reduced efficiency. An engine that
burns oil will ruin the sensor regularly.
Air Flow Meter
P/N 0 280 202 023
The air flow sensor is the point of entry for air into the fuel injection system. It
measures the volume and temperature of air entering the engine and switches
the fuel pump on when air is drawn into the engine.
Replace with good picture
Coolant Sensor
P/N 0 280 130 023
The water temperature sensor is a hex-head brass component located in the
cooling system pipes. On a 2000cc engine it is located in the coolant "T" in front
of the head and between the cam drive wheels and the radiator.
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