How Can I Test My O2 Sensor And Exhaust Sensor

[hobbsy]

im using a little bit more fuel than i would expect on my r32 gts4.. fuel light comes on 300-350km from a full tank, and the car is fairly stock.

how can i test these sensors? anything else that might cause excess fuel consumption? the car is mechanically A1. or is this fuel consumption normal for the AWD?

[MANWHORE]

Easiest way is with a consult cable. I noticed you're in brisbane, otherwise i'd let you use my diagnostic screen.

[MANWHORE]

Easiest way is with a consult cable. I noticed you're in brisbane, otherwise i'd let you use my diagnostic screen.

[QWK32]

as far as i understand the o2 sensor readings are only used when the car is idling. but to test to see if is working properly you need to get a multimeter and probe the o2 sensor signal wire. 0.0 volts is the highest lean reading and 1.0 volts is the highest rich reading you will get. its works out to be the range of 10.0:1 to 20.0:1 afrs. at idle the volts should jump quickly frome on of these values to the other.

this isn't an accurate reading of your cars true afrs though just enough to tell if your oxygen sensor is working properly.

also r32 gtsts rich out heaps when you give them a bit.

Edited July 10, 2007 by QWK32