Ok guys I need some help, I need to figure this problem out now. I did the sensor swap on my 97 sunfire and it worked great untill I get the code p 134. I used to drive the car with the 02 sensor disconnected because the car would never go. So I did the swap. I bought the heated 02 sensor screwed it into the header. I took the signal wire from the car and ran it to the black wire on the sensor. then I took the grey and two white wires and ran them into the rear 02 sensor. The only thing would be if they rear 02 white wires are hooked up to the same as the ones I just spliced into? But I disconnected the battery and cleared the codes and I still get it. Please help me. Also I am getting .45 volts at the new heated 02 sensor
http://www.overkillengineeringmotorsports.com/
make sure the two white wires are hooked up to a 12v source for the rear o2 sensor and the grey wire is just ground....you can hook that up anywhere, rear o2, and nut and bolt somewhere, anything. What I did with my swap was install a post cat o2 sensor emulator which didn't have heater emulation(which the ECU is looking for a current draw for the heater and will throw a code if it doesn't see a heater) and I just hooked up the rear o2 sensor heater wires straight up to the new heated pre-cat sensor along with the ground wire from the rear sensor spliced into the emulator.
But your problems are wiring for sure, check you stuff again, you got something wired up wrong or pulling too much current from the rear o2 sensor heater wires and tripped something.
What is a emulator? I will try and explain exactly what I did
HEATED 02 SENSOR ON HEAD REAR 02 SENSOR
-(WHITE)----------------------------------------------------------------------------------------------------------------------(WHITE) ON REAR 02 EITHER ONE
-(WHITE)-----------------------------------------------------------------------------------------------------------------(WHITE) OPPOSITE FROM OTHER ONE
-(BLACK)-----------------------------------------------------------------------------------------------------------------(PURPLE) ON CAR
-(GREY)-------------------------------------------------------------------------------------------------------------------(GREY) ON REAR 02
Basically I used the rear 02 for wiring striaght foward, except for the signal wire and pluged the new 02 signal wire to the cars signal wire. Is this Wrong. Should I have used a different ground? Do I hook both white wires up to just one not two?
http://www.overkillengineeringmotorsports.com/
heres what I'm talking about with the o2 sensor simulator: 220113020291- ebay auction number.
Like I said he also sells "heater simulators" aswell but I just hooked that up to the new heater on the pre-cat sensor: 220112884118
He might have it cheaper on his site: www.o2sim.com
You need to have both white wires seperate from eachother. Your wiring looks right, you must be over loading the heater circuit or something.....or maybe a bad sensor?
Joshua Dearman wrote:heres what I'm talking about with the o2 sensor simulator: 220113020291- ebay auction number.
Like I said he also sells "heater simulators" aswell but I just hooked that up to the new heater on the pre-cat sensor: 220112884118
He might have it cheaper on his site: www.o2sim.com
You need to have both white wires seperate from eachother. Your wiring looks right, you must be over loading the heater circuit or something.....or maybe a bad sensor?
That sim on ebay is not going to work for his problem. He is working on the primary O2 sensor (manifold sensor). You should NEVEr put a similator on the primary O2 sensor.
FU Tuning
John Higgins wrote:Joshua Dearman wrote:heres what I'm talking about with the o2 sensor simulator: 220113020291- ebay auction number.
Like I said he also sells "heater simulators" aswell but I just hooked that up to the new heater on the pre-cat sensor: 220112884118
He might have it cheaper on his site: www.o2sim.com
You need to have both white wires seperate from eachother. Your wiring looks right, you must be over loading the heater circuit or something.....or maybe a bad sensor?
That sim on ebay is not going to work for his problem. He is working on the primary O2 sensor (manifold sensor). You should NEVEr put a similator on the primary O2 sensor.
Yeah, if you read I mentioned the simulator for the rear o2 sim! Thats why I mention using the post o2 cat sensor heater wires for the NEW pre-cat heated o2 sensor. I'll compare wiring when I get back around my car....a few days.
Has anybody used an alternate method for their power/ ground source other than tapping into their rear sensor?
Why not just wire the front sensor to a switched source with the other wire just going to ground?
Seem that it would then have a dedicated source for power and not have to use power required for the rear sensor.
Also, you don't have to buy the sim modules for the rear O2 sensor.
You can just get an oil fouling spark plug adaptor that would insert into the rear O2 bung in which your rear sensor would then install into the oil foul adaptor.
That effectively takes the rear O2 sensor out of the main flow of the exhaust which if you have deleted the cat, would cause the CEL to stay on.
If you do get this adaptor, make sure you get the long version and not the short version of the oil fouling spark plug adaptor that people use when their rings are blowing lots of oil into the combustion chamber, fouling the plugs.
I'll be doing this mod soon enough to see if this corrects some issues I have with the bank 1 O2 sensor being in the header.
Misnblu.com
Newbie member since 1999
Thank you Dave and JBO! 
I was told to splice the new white heater wires to the two white ones on the harness side of the secondary O2 sensor because the wire from the sensor to the plug is resistance sensitive.
FAST2.4 P you said you got it to work a few posts up. What did you do exactally, I am going to finally put mine in tomorrow so any help would be great. Where did you get those cool wire hook ups?
PSN ID: Phatchance249
