they are on your exhaust manifold, just before the silencer
Toyota RAV4's have two (2) O2 sensors.
2
There are 2.
2
On exhaust pipes before and after cat. converters.
between the exhaust manifold and catalitic converter
On a 1994 Toyota pickup, the O2 sensors are located in the exhaust system. There are typically two sensors: one positioned before the catalytic converter (upstream) and another after it (downstream). The upstream sensor monitors the air-fuel mixture, while the downstream sensor checks the efficiency of the catalytic converter. Accessing these sensors usually requires lifting the vehicle for better visibility and reach.
All O2 sensors are threaded into the exhaust system at various points. Upstream O2 sensors are located before the catalytic converter(s) and downstream O2 sensors are located after the catalytic converter(s).
A 2001 Toyota Tacoma with a 3.4L V6 engine typically has four oxygen (O2) sensors: two upstream (pre-catalytic converter) and two downstream (post-catalytic converter). These sensors help monitor the efficiency of the engine's fuel mixture and the catalytic converter's performance. If you're experiencing issues, it's important to check all four sensors for proper function.
There are four o2 sensors on a montero sport.
There are 3 oxygen sensors on this vehicle. Some of the Highlanders with California emissions have 2 fron Air/Fuel Ratio sensors and one rear Oxygen sensor.
To replace the O2 sensors on a 2001 Toyota Corolla, first, ensure the engine is cool and disconnect the negative battery terminal for safety. Locate the O2 sensors, which are typically found on the exhaust manifold (upstream) and the exhaust pipe (downstream). Use a wrench or O2 sensor socket to unscrew the old sensors, then install the new ones by threading them in and tightening securely. Reconnect the battery terminal and reset the engine light if necessary.