Hey all! Just had my check engine light come on, took it to get tested was told it was a o2 sensor(forgot the code) anyways I threw the car up on the lift and looked to see if anything was loose but also noticed I only have 3 O2 sensors and not 4. I looked on the driver side manifold but still couldnt find the 4th one.

Am I correct in assuming that this 2008 GT has 3 o2 sensors? 2 on passenger side and 1 on drivers side? Just seems really weird.

 

Uh, no. there's normally 4. The front 2 'green' ones and 2 'blue' ones for in/after the cats.

Always get the code(s) and post them up.

 

It's before the header to mid-pipe flange on the drivers side and you pretty much have to drop the transmission to get that bitch out!