Alright, so I have a 95 Talon ESi and I got a test pipe put on the other day. It was fine for a couple days, but now the CEL comes on, so I tried the 1 megaohm 1/4 watt resistor trick on the oxygen sensor after the cat. I put it on the white/green wire because that is the same wire as the black one after the connector under the drivers seat. I took it for a 15 minute drive, no CEL, so I'm happy, then just as I pull up the driveway, bam the CEL comes on. What the heck? Did I do something wrong? Anyone have any ideas. I tried to pull the codes off by turning the key on-off-on-off-on and I think I got codes 12, 21 and 55, what are these codes?

Rob Bain
95 Talon ESi
Iceman intake, Magnaflow muffler, UDP, Test Pipe

i just put the resistor on my car too, and i think you used the wrong wire. We did it to mine friday night and even now Im still CEL free. We put the resistor on the gray wire, it was a guess, but I guess we got lucky

Toney
'97 RS 5 Speed (totaled)
15.4606@88.42 Mph
96 Toyota Celica GT
88 Toyota Supra NA-T (w/ sports package)
Got Boost?? Hell yeah I-6 turbo powah baby!

I agree. I would double check the wire to be sure its the proper one. Also, you need to reset the ECU by disconnecting the negative battery cable for a few seconds, before you start her up again. I have had a gutted cat for many months now, and no CEL at all for it, using that resistor.

13.5 @108 MPH-2.2 60ft(stupid FWD!)
S16G @ 18 PSI/FMIC/Running on MegaSquirt II (Now with sequential
fuel injection)
My webpage: http://eclipsed4evr.home.comcast.net
-1998 Mitsubishi Eclipse RS-T- "Toy"
-1992 Plymouth Laser Turbo AWD(SOLD)
-2000 Honda CR-V(daily)

Well when I look at the connector from the rear O2 sensor I see 4 wires. In the neon write up and from other people I have been told that it is the black wire that we want to add the resistor to. So I followed it past the connector to just inside the center counsel, so i could keep the resistor inside the car, vs. underneath the car. After the connector I am sure that the black wire turns tot he green/white one. Could anyone double check and follow the wires underneath your seat to the connector? Anyother ideas let me know. Thanks again.

Rob Bain
95 Talon ESi

So which wire has everyone else used???