Chevrolet 96056758 Sensor, Water Temperature

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First check the fuses if the coolant temperature gauge is not working. If, soon after starting a cold engine, the temperature gauge shows 'Hot,' disconnect the wire at the coolant temperature sending unit. For Sprint, go to firewall side of intake manifold below thermostat for coolant temperature sending unit location. As for Metro, it is at base of throttle body on intake manifold where coolant temperature sender can be found. Change out the sensor if you see a drop in the reading. Yet if it remains high, then there is possibility that either wire has shorted to ground or faulty gauge may be involved. After running engine for about 10 minutes without getting indication from coolant temp gauge and confirming that fuse are good switch off car. Consider bringing a jumper lead along with you so that when coil is removed and cable disconnected we can temporary connect this jumper lead to earth point in engine compartment; turn ignition on but don't start motor now if it indicates hot again then replace cooling water temperature sensor otherwise problem lies with malfunctioning dial itself as mentioned above. In case you still get no response from meter then either gauge is defective or circuit open somewhere. Any pressure should be carefully released by removing radiator cap only when engine has greatly cooled before replacing back again thus reducing water loss through its lid during installation of new sensor thereby leading to saving some time spent on dealing with unexpected spills or needlessly wasted coolants after being replaced due bad readings Another step involves detaching wires going into this device before preparing sealing material such as Teflon tape or putty which will come handy while assembling new sender according manufacturer's instructions; Apply these materials around their threads so as fix tightly against any moisture leakage caused by improper fitting during tightening down another screw holding old unit place simultaneously trying avoid spilling off any remaining antifreeze out onto workshop floor! Once old part comes out quickly insert similar one prevent escape fluids otherwise we would have ended up losing even more than necessary due excessive spillages. After connecting the wire securely, tighten down sending unit. Refill coolant system and run engine to check for any leaks or proper operation of meter.

Almost all elements have an extended warranty required by the Federal government, so it is unwise to check or replace any of them while under warranty. After the warranty period has lapsed, you may opt to do checks or replacements for lesser money. The oxygen sensor is placed in the exhaust manifold and measures the concentration of oxygen in the exhaust gas with another in the catalytic converter for recheck of emissions level. An open or shorted oxygen circuit will set a code 13. Coolant temp sensor is a thermistor mounted on the intake manifold or TBI unit that provides voltage variations by the change in temperature; a faulty one causes a code 14, 15. To test it, the connector needs to be unplugged and the resistance needs to be checked with an ohmmeter, which, if does not correspond to the specified figure, means that the sensor is to be replaced. The manifold air temperature (MAT) sensor, placed in the air cleaner housing, determines the air temperature getting into the intake manifold and controls the fuel delivery; if it fails, the code 24 appears. The manifold absolute pressure (MAP) sensor supervises changes in intake manifold pressure converting this info into a voltage level for use by the ECM in delivery of fuel, among other functions; only unit substitution is doable in case of a failure. The cruise control module on 3.5L engines calculates fuel delivery based on throttle valve angle through throttle switch (TS) on manual transaxle models or by throttle position sensor (TPS) on automatic transaxle models, and such failures cause the code 21 or 22 and requires dealer service for diagnosis or for replacement. The VSS, incorporated into the speedometer, transmits a pulsing voltage signal to the ECM to be converted into MPH; a malfunction results in a code 24 and requires dealer troubleshooting. The Crank angle sensor which is mounted on the distributor produces pulsating AC voltage signal, which is used by the ECM to determine the engine speed and to control a number of devices.

The coolant temperature indicator system features a temperature gauge in the instrument panel and a coolant temperature sending unit on the cylinder head. The location of the sending unit varies depending on the model type.

Diagnostic trouble codes are set if there is a malfunction in the ATS or IAT sensor circuit.

To replace the sensor, disconnect the electrical connector and unscrew it from the intake manifold or head.

The crank angle sensor, located in the distributor, generates a pulsing AC voltage signal used by the ECM to calculate engine speed and control various devices.