The 2001 Toyota Tacoma4Cylinder has four oxygen sensors while the v6 engine has SRX oxygen sensors. These are dispersed throughout the air intake valve and the exhaust. The sensors are in charge of making sure there is enough air flowing through the car. If the car gets choked for oxygen then the engine will not be able to create combustion and will shudder when idle or stall completely. These sensors are pretty cheap, about 10 dollars each, and only require the removal of a few screws to get loose. If You have one falling it is in Your best interest to get it changed out as soon as possible, otherwise, You may end up stranded.
Jay
November 30, 2020
You must mean fuel injectors. 2001 Tacoma 4 and 6 cylinder has 2 O2 sensors not 4 (4 cylinder) or 6 (6 cylinder.)
DougDunn
August 19, 2020
It's the up stream sensor called on tester bank 1so how do I no witch one to change
Melanie D.
August 29, 2019
The 2001 Toyota Tacoma oxygen sensor varies by engine size. The 2001 Toyota Tacoma 4-cylinder has four oxygen sensors while the V6 engine has six oxygen sensors. The sensors are located either underneath the hood or underneath the car. The oxygen sensors are connected (screwed) to the exhaust pipe, either in front or back of the catalytic converter. The front (upstream) sensors measure the amount of oxygen in the exhaust system. The rear (downstream) sensors are located behind the catalytic converter.
bruce
January 8, 2023
REALLY !! Where the other 2 on a 4 cyl engine .....................crappy answer
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