You will need
- - new sensor;
- - WD-40 or "liquid wrench";
- - ring wrench;
- - scrap;
- - towing cord;
- - rags.
Despite the fact that the very process of removing the sensor of oxygen concentration is quite simple and, at first glance, should not cause any difficulties, in practice, motorists faced a lot of problems. The main difficulty stems from the fact that in the process of operation of the vehicle lambda probe tightly "strong liking". As a consequence, disassemble it is not possible.
Some "garage craftsmen" offer to solve this problem is "hard" methods - for example, remove the manifold or just tap with a hammer on the key. However, the use of a hammer may lead to the destruction of the head block or manifold. How to be in this situation?
Stop the engine and allow the vehicle to cool down. Make sure that you can safely hold on to the exhaust manifold. Liberally spray WD-40 or "liquid wrench" on the installation location of the sensor. Tightly wrap the lambda probe with a cloth so that it fit snugly to the collector. Impregnate the cloth with the composition of "liquid wrench" and leave for 8-10 hours. Repeat 1-3 times at intervals of half an hour.
Disconnect the oxygen sensor connector or remove the "minus" terminal of the battery. Remove the cloth. Disconnect the sensor and remove the hose connecting the injection unit and the air filter.
Remove the plastic cap bearing stand. Take the socket 22, route it the oxygen sensor wire and gently pull on the lambda probe. Set the key so that his arm was horizontal and was pointing to the right.
Take the tow cord, make a loop and secure it on the handle of the Allen wrench. Insert the loop through the scrap so that one of its ends rested in the Cup of the strut bearing. Slowly raise the other end of the scrap up, shifting the sensor. Flip the key. Repeat the operation until then, until the key starts to turn by hand.
Unscrew the old oxygen sensor and gently wipe the threads of the manifold with rags. Install the new lambda probe, strongly tightening it. Assemble in reverse order.
Advice 2: How to change lambda probe
Lambda probe – oxygen sensor is an element of the power supply system for injection vehicles. The purpose of this device is that it shows the ratio of the overrun air in the fuel / air mixture. The rejection of a lambdaprobeor a disruption in its work can occur at the branch circuit connection circuit, blockage by combustion products of gasoline, thermal overload and mechanical damage, for example, when riding on the road.
You will need
- Lambda probe tools
Diagnose the problem, make sure that the lambdaprobe inoperable. If the lambdaprobe is broken, the co content in the exhaust increases with 0.1-0.3% to 3-7%. Other symptoms of failure of the oxygen sensor is the deterioration accelerating dynamics, changing idle and increased fuel consumption.
In most cases the lambdaprobe stops working because of a Deposit that accumulates on the sensor under the protective cap. You can try to remove the plaque to restore the sensor performance. The sensor was washed in phosphoric acid for 10-20 minutes. It eats away dirt, but does not destroy the electrodes and metals. After washing, the sensor must be rinsed and dried. The threads should be lubricated with Assembly paste. If the sink does not work, the lambdaprobe must be replaced.
Remove the battery terminal. Locate lambdaprobe, cut the connector so that the wire that goes from the connector, was approximately twenty centimeters. Remove the old probe, it is necessary to put a new sensor pre-cleaning the wire. The installation must be extremely careful, take care not to damage the wires coming from the lambdaprobe. Cleaning the wiring on the connector, with conductors supplied, you need to perform the join. After connection, the wires must be insulated. Ready connector connecting the lambdaprobeand can be wear the battery terminals.
Changed lambdaprobe, observe the precautions that will help to increase its life. In particular, greatly reduce the service life of the sensor poor oil-removable rings, the penetration of antifreeze in the cylinders, and the exhaust duct, the concentrated fuel-air mixture.
Change the lambdaprobe, as required by the rules of operation. For nepodporovany – every 50 to 80 thousand kilometers, heated every 100 thousand kilometers, planar for every 160 thousand. Timely replacement of the sensor will save up to 15% of fuel, reduce exhaust emissions, will help to preserve the dynamic characteristics of the engine.
Oxygen sensors suck in outside air through the connecting plug, so it can't be treated with spray or grease.
Is the advice useful?
Changing the lambda probe, you can replace the heated device in heated, but not Vice versa.