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HUNTING IDLE, O2 Sensor related 700

posted by  Herb Goltz on  Thu Jul 23 15:09 CST 2009
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last visit: Fri Oct 24 13:23 CST 2014
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I've encountered this before-- my bet is that you have voltage bleeding over from the heater circuit to the sensor side. You should only see swings from about 0.1-0.9VDC from the sensor itself. I had a similar problem with a nearly new universal Bosch sensor-- I was seeing 1.3 or 1.4V on the sensor line. Replacing the sensor fixed it.

With the bad sensor I was getting 1-1-3 on the OBD. My car was a '92 245. This car was intermittently undrivable-- it hesitated very badly and would suddenly surge back to life.

Good luck!






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New HUNTING IDLE, O2 Sensor related [700]
posted by  Brick Skinner  on Thu Jul 23 14:55 CST 2009 >


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