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Old 02-04-2001, 08:38 PM   #1
ac_gohan
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Member#: 1903
Join Date: Jul 2000
Location: Bay Area, I-Speed Tech
Vehicle:
2000 2.5 RS-T coupe
T3/04 Link'd 2 10 PSI

Post 02 sensor question please help



ok i recently installed a a/f ratio gauge and i spliced the wire from the slot that says its the front 02 sensor slot. I did so and my gauge does not recieve a signal. what is wrong is it the wrong slot? There is a front and a rear o2 sensor each have a slot and a warmer thing. people with a/f ratio gauges please tell me which wire to splice. Thanx
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Old 02-04-2001, 08:59 PM   #2
Sean McElderry
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Member#: 526
Join Date: Nov 1999
Location: Beaverton, OR, USA
Vehicle:
1995 Supra Turbo
Red

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You should really try a search...this has been hashed and rehashed at least 5 times in the past.

To answer your question, if you have a MY00+ Subaru, then you need to attach it to the rear O2 sensor. It will work, but your reading will be a little off due the the cat being upstream from where you're reading the O2 content of the exhaust gases.

If you have a MY99- Subaru, then attach it to the front O2 sensor.

Do not touch the warmer signals.

Sean
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