1990 FIRBIRD V6 3.1 OXYGEN SENSOR TEST WIRE

  • Tiny
  • flamenbird87
  • 1990 Pontiac Firebird
  • 6 CYL
  • 2WD
  • automatic
  • 160,000 miles

Does anyone know what wire on the o2 sensore sends the signal to the ecm?I need to text mine
thanks

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Wednesday, January 5th, 2011 AT 10:09 PM

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  • Tiny
  • rasmataz
  • Member

The purple wire

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Wednesday, January 5th, 2011 AT 10:20 PM
  • Tiny
  • flamenbird87
  • Member

I just checked my 02 sensore it is a single wire (blk) I just replaced it and it seems the car is running better, but it still idles a little rough and the rpm's jump a little between 700 and 750 at idle. Also I notice vibration at idle, could this be due to a motor mount?

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Thursday, January 6th, 2011 AT 10:46 PM

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