Air Fuel Gauge Question

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Aug 4, 2009 | 11:10 PM

magnus66

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From: Abilene, Texas

Air Fuel Gauge Question

I have the auto meter ulrta lite narrowband air fuel ratio gauge and am trying to install it on my 2002 trans am. I was wondering were you are suppost to put the o2 sensor wire at. I read that you can plug it into the purple/white wire #69 on the pcm but there are several of the same color wires there and there is no numbers labeled on my pcm. Is there anywere else i can put the wire?

Aug 5, 2009 | 09:22 AM

LS1Fury!

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you can tap into the purple wire off the factory 02 sensors but you will get much better readings with a wideband 02 sensor. You're pretty much going to have a light show.

Aug 5, 2009 | 09:48 AM

Spd-Kilz

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From: Rack City

Quote:

Originally Posted by LS1Fury!

you can tap into the purple wire off the factory 02 sensors but you will get much better readings with a wideband 02 sensor. You're pretty much going to have a light show.

Listen to this guy!

Aug 5, 2009 | 10:21 AM

magnus66

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From: Abilene, Texas

I looked at the wires and they are all blue coming off of the o2 sensor. Does it not matter which one i use?

Aug 5, 2009 | 10:23 AM

Spd-Kilz

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From: Rack City

Quote:

Originally Posted by magnus66

I looked at the wires and they are all blue coming off of the o2 sensor. Does it not matter which one i use?

Find the front O2 sensor that is in your Y-pipe. Go ~1 foot towards the PCM from there, and you'll find a pigtail that clips into a wiring harness that runs up to the PCM.

On the PCM side of the pigtail, there are 4 wires. You will see the purple one there.