#36769, "Using rear O2 for A/F gauge (no cat)....."
First off, I have no cat. Could I use the rear O2 sensor for my A/F gauge? Would there be any problem with the reading from the sensor because it is located farther down the exhaust pipe? I also have the resistor mod to get rid of the CEL so I would have to tap the gauge into the signal wire before the resistor. The reason I ask is because it will be alot easier to hook my gauge up. I wont have to bring this one trough the firewall.
BTW, can we use the O2 signal wire ground as a ground for the A/F gauge?
-Jared 96 GS Melbourne, FL
Iceman CAI | RS*R Cat-Back | AFX Pully | Milled Head 10:1 CR | MP 60mm TB
#36770, "RE: Using rear O2 for A/F gauge (no cat)....." In response to Reply # 0
The rear o2 sensor just checks to make sure the cat is there and working.. therfor I do not think you want to use it. I tapped into the wire at the ECU. (black with white stripe I think, might be the other way around)Going through the firewall is not hard, there are plenty of places to go through.
#36771, "RE: Using rear O2 for A/F gauge (no cat)....." In response to Reply # 1
just to metnion it is white with a black strip. and the fire wall thing just drill a hole above your pedals theres an area in the engine bay side of the firewall w/o anything there. Just make sure to use a gromet so that the sahrp metal doesnt wear away the wires protective jacket.
oh sorry , about the rear 02 resistor mod, i have that at home so ill give you the specific info on that later.
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#36772, "RE: Using rear O2 for A/F gauge (no cat)....." In response to Reply # 2
Be careful where you drill into the firewall. Check on both sides to make sure that the drill bit wont go into anything else. Above the pedals can be a safe place, but just remember that the brake booster is right there also, and if you drill into that then you will have to replace the whole thing. Just a thought, Chris b.
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