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Home >> Subaru >> 1986 >> RX >> Repair and Diagnosis >> Engine Performance >> System >> Fuel INJ System - MPFI >> Operation >> Coolant THERMOSENSOR
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Coolant THERMOSENSOR

The coolant thermosensor is mounted on the waterpipe, which is made of aluminum alloy. Its thermistor changes resistance with respect to temperature. The thermosensor sends the coolant temperature signal to the MPFI control unit. The MPFI control unit uses this information to decide how much fuel to inject.