i little bout the O2 sensor....

[Spanke's Ranger]

dont know much bout the sensors but jw the O2 sensor is on the cat aint it? wat does it do an do i need it?

 

[jhammel85]

Heres some info on the O2 sensor
http://www.fordfuelinjection.com/?p=31

Also, location depends on what vehicle. There are sometimes ones up near the headers on each side and usually some around the cat, either before or after. On my truck (87 Ranger) its just before the cat, and thats it. Only one.

And yeah it is needed for the truck to run properly. Otherwise, you'll throw a code on the trucks ECU and get a Check Engine light. They're cheap enough and easy enough to replace so it's always worth it.

 

[Big Jim M]

Howdy Spanky
Yep! You positively NEED IT! It's gotta do it's job to tell the computer what it should do to the fuel and timing for your engine to run properly. Don't even THINK of taking it out. It measures the OX in the exhaust and the computer makes the proper adjustments to the timing and fuel from the input of this sensor.
Big JIm

 

[Spanke's Ranger]

hey thanks fer the help yall this site is actually perty nice an ive learned alot so far appriecate it

 

[jhammel85]

Yeah man, Thats why we're here. Welcome to the board.