How you can Clean the Oxygen Sensors inside a Lexus SC400
1Raise the car having a hydraulic jack and secure it on jack stands. The Lexus SC400 is equipped with four oxygen sensors, two per bank. Stick to the exhaust manifolds from the front of your engine to underneath it exactly where you might see the oxygen sensors screwed into position, each ahead of and just after the catalytic converters on each side of the engine. The oxygen sensors will have wires plugged into the prime from the sensors that run back in to the engine bay.
2Spray the oxygen sensors with penetrating oil and enable it to sit for at least 10 minutes. On a high mileage car Vehicle Diagnostic equipment, this method needs to be repeated many occasions.
3Use a box-end wrench or oxygen removal socket to remove the sensor for cleaning. If the "Check Engine" light on your Lexus SC400 has come on, the code will let you know which sensor will not be operating usually. Otherwise, clean all 4 oxygen sensors so that the engine's computer system signal remains consistent.
4Examine the oxygen sensor to make sure the speak to is intact and has not cracked, broken off or been damaged. The sensor speak to will be black and covered with carbon; but if it can be damaged Auto diagnostics, it is going to have to be replaced.
5Spray the oxygen sensor with throttle physique cleaner. Allow it to soak in then gently tap the finish of the oxygen sensor to dislodge any deposits. Repeat, as needed, until the sensor is clean.
6Reinstall the oxygen sensor as soon as it truly is dry and cleaned. Decrease the vehicle together with the hydraulic jack. You could possibly choose to place a dab of anti-seize compound on the threads of your oxygen sensor to ensure that it can be less complicated to eliminate in the future.
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