How to change the lambda probe
How to change the lambda probe
Lambda probe - the oxygen sensor is an element of the power systeminjection cars. The purpose of this device is that it shows the coefficient of air consumption in the air-fuel mixture. The rejection of lambda-probeand or interruptions in its operation can occur whenseparation of the electrical circuits of connection, closing, clogging with gasoline combustion products, thermal overloads and mechanical breakdowns, for example, when driving off-road.
You will need
- Lambda probe, tools
Instructions
1
Diagnose the problem, make sure that the lambda-probe has become worthless. If the lambda-probe Broken, the CO content in the exhaust increases with0.1-0.3% to 3-7%. Other symptoms of the oxygen sensor failure are the deterioration of the acceleration dynamics, the changing idling, the increased fuel consumption.
2
In most cases, lambda-probe ceases to work because of the deposit, whichaccumulates on the sensitive element under the protective cap. You can try to remove the plaque to restore the efficiency of the sensor. Wash the sensor in orthophosphoric acid for 10-20 minutes. It corrodes dirt, but does not destroy electrodes and metals. After washing, the sensor should be rinsed and dried. Thread should be lubricated with mounting paste. If washing did not help, lambda-probe Must be replaced.
3
Remove the battery terminal. Find the lambda-probe, cut the connector so that the wire that comes from the connector is about twenty centimeters. Unscrewing the old one probe, in its place, it is necessary to install a new sensor, after having cleaned the wires. Installation should be extremely careful, you need to ensure that you do not damage the wires coming from the lambda-probea. After cleaning the wiring on the connector, you need to make a connection using the conductors that come with it. After connection, the wires must be insulated. Having connected a socket of ready ljambda-probeAnd, you can put the battery terminals.
4
Changing the lambda-probe, Observe the precautions thatWill help extend its service life. In particular, low-quality oil-removable rings, antifreeze penetration into cylinders and exhaust pipelines, concentrated fuel-air mixture, greatly reduce the service life of this sensor.
5
Change the lambda-probe, as required by the rules of operation. For unheated - every 50 - 80 thousand kilometers, for heated - every 100 thousand kilometers, for planar - every 160 thousand. The timely replacement of the sensor will save up to 15% of fuel, reduce toxicity of the exhaust, will help preserve the dynamic features of the engine.
