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2007 Subaru WRX running rich and wont idle

Tiny
KSUBARUWRX
  • MEMBER
  • 2007 SUBARU WRX
  • 4 CYL
  • AWD
  • MANUAL
  • 50,000 MILES
Should the o2 sensor heat up when the key is in the on position
Sunday, June 27th, 2010 AT 1:52 PM

2 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 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
  • 2 POSTS
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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