Solved Where Is The Coolant Temperature Sensor Located On Fixya For 2.5l engines, the coolant temperature sensor is located on the left side of the cylinder head. for mfi engines, the coolant temperature sensor is located on the intake manifold water jacket or near (or on) the thermostat housing. fig. 1: engine coolant temperature (ect) sensor and connector. Source: 99 cadillac de ville the coolant temp sensor is at the rear of the engine and is a "bad word" to get to. the 3 relays are at the bottom,under the fans. if you remove the driver side fan out of the way( 2 10mm bolts holding the fan) you should have good access to them. they do have locks on them and may be tricky to unplug. there is a 7 16 nut holding the relay plate down. remove and it.
Solved Coolant Sensor Replacement Where Is It Fixya Position thermometer, and new sealing gasket into hole in manifold, radiator or coolant pipe, depending on model, and hand tighten. using an appropriate socket, tighten the thermometer to 2 3 ft. lbs. (3 4 nm). connect the wire harness to the thermometer. tighten the radiator draincock, if not already done. connect the negative battery cable. Step 7: remove electronic harness from the temperature sensor. the first thing is to remove the electronic harness that connects to the sensor. typically this sensor is attached with a plastic clip. to remove the clip, take a flat head screwdriver and slowly pry the clip from the outside edge of the temperature sensor. Increase the vacuum on the sensor using the vacuum pump. the voltage should steadily drop as the vacuum increases.for the cooling fan, first check the fuse and relay, then check if the fan motor is working by putting a direct 12 volts and ground to the fan (if it is a 2 pin connector). Location: greater vancouver, british columbia, canada. vehicle: 2010 prius. model: touring. when i google "union nut wrench" i get all these hits for "flare nut wrench", which is essentially a box wrench with a smaller than open wrench opening, giving you two more corners, compared to an open ended wrench. actually i don't see why a box wrench.
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