Lancia Kappa 2.0 Sedan 1995

Short Description
The information relating to timing belt replacement intervals is additional to the main purpose of this CD, but is included to provide guidance to garages and for customer advice. Where possible the recommended intervals have been compiled from vehicle manufacturers’ information. In a few instances no recommendation has been made by the manufacturer and the decision to replace the belt must be made from the evidence of a thorough examination of the condition of the existing belt.

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Content
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Mass air flow (MAF) sensor - hot-wire type - Fig. 8
Function
The MAF sensor has no moving parts and provides very little restriction to the air flow. It is fitted between the air filter and throttle body.
Operation
The MAF sensor consists of a venturi with a resistance wire exposed to the incoming air. An air temperature sensor or compensating wire is also exposed to the air flow. The ECM senses changes in temperature caused by variations in air mass passing through the sensor body and increases or decreases the current flowing through the measuring wire. An internal electronic circuit maintains the approximate temperature of the measuring wire at a constant 120°C, above the intake air temperature. As the mass of air passing the wire increases, so the current required to maintain the temperature also increases. This increase in current is sensed by the ECM. This is the primary signal, used in conjunction with signals from the other system sensors, for determining the correct amount of fuel to be supplied to the engine. A ‘burn-off’ facility operates when the system is switched off, to remove dirt from the filament.
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