2002 Chevy Avalanche oxygen sensor

Tiny
RRRLASTF
  • MEMBER
  • 2002 CHEVROLET AVALANCHE
  • V8
  • 4WD
  • AUTOMATIC
  • 86,000 MILES
Is the purple wire (HO2S) the signal wire? The O2 sensor was the following wire; purple, tan, pink, & black.
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Saturday, March 20th, 2010 AT 9:21 AM

7 Replies

Tiny
RHALL77
  • EXPERT
May I ask what trouble code you are getting and what the problem is your having
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Monday, March 22nd, 2010 AT 8:20 AM
Tiny
RRRLASTF
  • MEMBER
I'm trying to hook a electronic fuel injector enhancer (efie) to the signal wire on the oxygen sensor.
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Saturday, March 27th, 2010 AT 8:01 AM
Tiny
RHALL77
  • EXPERT
Do you have any information on the electronic fuel injector enhancer
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Saturday, March 27th, 2010 AT 8:12 AM
Tiny
RRRLASTF
  • MEMBER
The truck O2 sensor has; ppl to HO2s HI, tan to HO2S LO, pink to fuse, black to grnd. Dual digital efie from 3rdbrakeflasher has; grnd, 12v, blue & brn for 1 signal wire, white & green for 2nd signal wire. Cut O2 signal wire & connect to efie, blue going to ECU and brn to O2 sensor. Which wire am I suppose to use the purple (HI) or the tan (LO) signal wires?
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Saturday, March 27th, 2010 AT 9:28 AM
Tiny
RHALL77
  • EXPERT
Who makes the enhancer? Let me try to look up the info
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Saturday, March 27th, 2010 AT 9:31 AM
Tiny
RRRLASTF
  • MEMBER
3rdbrakeflasher. Com makes the efie, but the question is which signal wire do I hook the efie to the oxygen sensor.
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Saturday, March 27th, 2010 AT 6:23 PM
Tiny
RHALL77
  • EXPERT
I never messed with one of them before, I would suggest contacting them for more information. Let me know what they say
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Monday, March 29th, 2010 AT 11:05 AM

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