Check, removal and installation
The coolant temperature gauge is installed on the instrument panel, powered by a voltage stabilizer located in the same place (through the ignition switch and fuse), and its short circuit to ground is carried out through the sensor.
The sensor of this pointer on 1.4 and 1.6 liter engines is screwed into the intake manifold, and on 1.8 and 2.0 liter engines - into the thermostat housing. The sensor has a thermal resistance, the electrical resistance of which decreases with increasing temperature. If the sensor fails, it should be replaced.
If the pointer starts to falter, check other gauges; if they do not work, check the power supply circuit of the instrument panel. If the readings are unstable, you need to look for a malfunction in the voltage stabilizer.
If the pointer arrow is on the blue cold sector ("cold"), disconnect the sensor wire and short it to ground on the cylinder head. If the arrow of this device deviates when the ignition is turned on, then the sensor is out of order and should be replaced. If the arrow of the device does not deviate, remove the instrument panel shield (chapter 12) and check for damage to the brown / white wires between the temperature sensor and the pointer, as well as the power supply of the device. If the wiring is in order, and the device does not work, it is necessary to replace it.
If the arrow of the device is on the sector hot ("hot"), disconnect the sensor wire. If the arrow stands in the cold sector ("cold") after the ignition is switched on, the sensor is defective and should be replaced. If the arrow remains motionless, check the chain as above.
Drain some of the coolant from the cooling system to reduce spillage.
Disconnect the negative battery terminal.
Disconnect the wire from the sensor, then unscrew it.
Installing the sensor is carried out in the reverse order of removal, taking into account the following.
Before installing, apply a layer of sealant to the threads of the sensor.
Add fluid to the cooling system.
After that, start the engine and check the operation of the sensor. Also, check for refrigerant leaks.
Visitor comments