2007 SUBARU WRX RUNNING RICH AND WONT IDLE

  • Tiny
  • ksubaruwrx
  • 2007 Subaru WRX

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

Sunday, June 27th, 2010 AT 1:52 PM

2 Answers

  • Tiny
  • mhpautos
  • Expert
  • 30,495 posts

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)

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Monday, June 28th, 2010 AT 1:41 AM
  • Tiny
  • ksubaruwrx
  • Member

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

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Tuesday, June 29th, 2010 AT 6:12 PM

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