on each exhaust manifold there are Air Fuel Ratio Sensors. these are before the catalytic converters. after the converters, there are 1 or 2 Oxygen Sensors. i believe the 99 has 1 held by 2 12mm nuts about even with the driver's seat under the car.
the connector is under the driver's seat.
These sensors are available on EBay for ~$70
On a 1999 Lexus RX300, the knock sensors are located on the engine block, typically underneath the intake manifold. You may need to remove the intake manifold to access them properly. There are usually two knock sensors, one on each bank of the V6 engine. Always consult a repair manual for specific instructions and torque specifications when replacing them.
It is in the fuel tank.
On a 1999 Lexus RX300, the knock sensors are located on the engine block, specifically underneath the intake manifold. To access them, you'll typically need to remove the intake manifold, as they are positioned on the sides of the engine, near the cylinder heads. It's advisable to consult a repair manual for detailed instructions, as the process can be complex.
Underneath lower intake manifold in the valley between the heads.
Two speed sensors on a 1999 rx300 .One is located under air filter box,remove air filter box and sensor in located there,the other sensor in at a 45 degree angle on the transmission just behind the battery,remove the battery and tray to get better access.The sensors have the same part number and are the same.
Tune up for 1999 rx300 Lexus
The 1999 Lexus RX300 is equipped with several sensors that monitor various systems within the vehicle, including the engine, transmission, and safety features. Key sensors typically include oxygen sensors, mass airflow sensors, throttle position sensors, and various temperature sensors. In total, there are around 10 to 15 sensors throughout the vehicle, depending on the specific configuration and options. For precise details, consulting the vehicle’s service manual or manufacturer specifications is recommended.
adjust headlight
lexus rx300 1999-2003
Passenger side of engine on the rear valve cover.
It's attached to the throttle body.