mspeedP5
Contributor
- :
- '02 Protege5
O2 Sensors - Are they both the same?
- Thread starter mspeedP5
- Start date
yeah, i was wondering the same thing...
i only use one (front for the rear) sensor, and i'm running fine... a little fuel rich, but that'll get fixed with some tuning.
one thing i do know, is that i think the first one measures the gases before the cat and the second one after...but i don't know if it matters if they get mixed up or not... sorry
i only use one (front for the rear) sensor, and i'm running fine... a little fuel rich, but that'll get fixed with some tuning.
one thing i do know, is that i think the first one measures the gases before the cat and the second one after...but i don't know if it matters if they get mixed up or not... sorry
cougar10agREDUX
Member
- :
- 2003 Protege ES-T
factory worshop manual for the FS states the resistance for the O2 heaters being different, front O2 heater is ~5.6 ohms, the rear heater is ~15.7 ohms the ecu monitors the heater circuits for malfunctions, swapping them would throw a MIL
QFT.
The universals are the same.
I bought two of the same for mine and spliced them in with no CEL.
cougar10agREDUX
Member
- :
- 2003 Protege ES-T
thats what the manual says. it's controlled by a duty signal, it prolly doesn't give a s*** about the resistance as long the heater circuit works and responds back
cougar10agREDUX
Member
- :
- 2003 Protege ES-T
i've been thinkin about a way to build something for the heater circuit to fool the ECU so i could use the narrowband output on a WB02 sensor for the ECU, but since the heater circuit is controlled buy a duty signal to turn it on and off as well as get feedback of it's status and not just a voltage on/off i don't see anyway to bypass the heater circuit using just a resistor. i'd have to get one and crack it open or find some specs on the sensor to see what i could do.
Sorry to hi-jack, but at least I am using the search feature 
. Anyway I have an DTC of p0037 and I have gathered that I have a bad o2 sensor, I just don't know which one. Can anyone help me there?
Also where is a good place to get the o2 sensors. I have heard that factory ones are the best and any other brand could affect mileage etc.
I do have an ammeter, but I have never ohm'ed out a sensor and could use some guidance on that to be sure I am replacing the correct sensor. Thanks!
J.D.
. Anyway I have an DTC of p0037 and I have gathered that I have a bad o2 sensor, I just don't know which one. Can anyone help me there? Also where is a good place to get the o2 sensors. I have heard that factory ones are the best and any other brand could affect mileage etc.
I do have an ammeter, but I have never ohm'ed out a sensor and could use some guidance on that to be sure I am replacing the correct sensor. Thanks!
J.D.
Viralphrame
Member
Sorry to hi-jack, but at least I am using the search feature
Also where is a good place to get the o2 sensors. I have heard that factory ones are the best and any other brand could affect mileage etc.
I do have an ammeter, but I have never ohm'ed out a sensor and could use some guidance on that to be sure I am replacing the correct sensor. Thanks!
J.D.
try denso o2 sensors
