00 5.2 1500 how many 02 sensors are there?

[comet240]

hi i went to buy some 02 sensors for this truck one i having problems getting the after cat sensor off i currently running engine and hoping i can get it off cuz it be hot

but i got told i need 3 O2 sensors a Left Right and Down Stream and the Right and Down Stream sensors are the same but right now i dont see the Left one where is it located? does it realyl have only 2 or 3?

[comet240]

i have looked over this engine i dont see a 3rd O2 Sensor
so what would that front one be? as from what ctire says

Left 02 Sensor is different from Right and Down Stream

so that be the same 02 sensor in front of the Cat and Behind the cat

but i dont know where the left one is? i havent cut the connector off yet for the frotn one as it wasnt a problem

so what they talking about a 3rd one? and which 02 sensor goes in front of the cat then

[Chris Stewart]

Page 1533 on the FSM describes 4 O2 sensors on an '01 but that might be more places to look on yours.
It also describes "mini cat converters".

[comet240]

oh wow eh 4 eh

so far from what i see i only have the 2 for a 2000 1500 model as its a light duty truck not the heavy duty

it did have a higher HC PPM but they never tell me at garage what it could be that mostly causes it jsut hook it up to the machine lol