Volvo Workshop Manuals
940 L4-2.3L SOHC VIN 88 B230F (1992)
Sensors and Switches > Sensors and Switches - Powertrain Management > Sensors and Switches - Emission Control Systems > EGR Temperature Sensor > Component Information > Locations > Page 2293
EGR Temperature Sensor: Description and Operation
Fig. 123 E.G.R. TEMPERATURE SENDER
Used by the fuel injection and ignition ECU:
The sensor (mounted in the upper EGR pipe) measures the temperature of the exhaust gases returning to the intake manifold. By detecting the
The sensor may be either a Positive Temperature Co-efficient (PTC) type or an Negative Temperature Co-efficient (NTC) type and is designed to
PTC means that the resistance increases as temperature increases. PTC sensors can be identified by 1/8 inch NPT (tapered pipe) threads.
NTC means that the resistance decreases as temperature increases. NTC sensors can be identified by M10 threads (metric).
NOTE: The sensor is highly sensitive to shock and impact. Particular care must be taken when handling and installing it.
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