Oxygen sensors

[Green Mk3]

I have recently replaced my oxygen sensor on my 1996 GL. There wasn't anything specifically wrong with it but after 100,000 miles bosch recommends it be changed. There was a huge difference to the cars idle and warm up time, power also felt smoother and i am expecting better fuel economy as well. Not a particularly expensive proceedure at under $100 if u do it yourself and definatley worth it. You can purchase the Bosch sensors from Tooley imports in Hornsby. If anyone has any questions pm me.

[runamuk]

is that the sensor on the airbox? or am i completely mistaken?

[Green Mk3]

It is in the exhaust. it measures the level of oxygen in the exhaust gases as a voltage, which tells the computer to richen or lean the mixture. The sensor you are refering to is the intake air temp sensor.