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Home >> Alfa Romeo >> 1987 >> Spider Quadrifoglio >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - BOSCH AFC >> Testing >> Altitude COMPENSATOR Sensor
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Altitude COMPENSATOR Sensor

Disconnect wiring from sensor. Measure resistance between terminals No. 2 and 3. Measure resistance between terminals No. 1 and 2. If resistance values are not as specified, replace sensor.

NOTE: This resistance value will change depending on altitude of vehicle.
ALTITUDE COMPENSATOR RESISTANCE SPECIFICATIONS

Test Terminals (Ohms)
2-3 2000-3000
1-2
At 0-4000 Ft. 500-4500
Above 4000 Ft. 2500-6000