2007 Subaru WRX Repair Question
Topics covered: Sensor, All wheel drive, Engine.
Mileage: No information provided.
Mileage: No information provided.
Asked on June 27, 2010
2007 Subaru WRX running rich and wont idle
Engine Performance problem
2007 Subaru WRX 4 cyl All Wheel Drive Manual 50000 miles
should the o2 sensor heat up when the key is in the on position
2007 Subaru WRX 4 cyl All Wheel Drive Manual 50000 miles
should the o2 sensor heat up when the key is in the on position
Asked by ksubaruwrxAnswer
Replied on June 28, 2010
Hi there,
These are heated O2 sensors, if they are faulty the ECU will go to a full rich reading, this well may be your problem.
mark (mhpautos)
Replied on June 29, 2010
Which o2 sensor? The car has two. The front one is considered to be a a/f sensor but looks just like a o2 sensor. The other is after the turbo. Also the bov starts flowing air when I plug the vacuum line in