350SS

iTrader: (38)

I'm trying to integrate the narrowband output into my stock pcm and I keep setting off a P0131 code which is for the Bank1 Sensor1 Low signal. Can anyone tell me how they have their PLX wideband wired up so that I can quit throwing codes for the replaced stock O2? I first tried to wire the PLX nb O2 output to the PCM O2 high and O2 low positions...didn't work. I then tried to run the PLX nb O2 output to just the PCM O2 high spot and then split the O2 low wire coming out of the remaining NB sensor still in place to both O2 low positions on the PCM for banks 1 & 2. This didn't work either. Can anyone help me out here?

Honda Hunter

iTrader: (8)

Did you use resitors?

350SS

iTrader: (38)

If you are reffering to a resistor for the O2 sensor heating circuit, no. The PCM does not receive any input from this circuit. The only other thing that I can think of is that I did not install capacitors between the WB and NB signals and thier grounds near the PCM. Would this cause a problem? I thought I might be able to get around this by using the same ground from the remaining NB sensor for both O2 low PCM inputs....

marthastewart

iTrader: (1)

Did you ever get it to work right?

Derek @ EDO

iTrader: (73)

http://plxdevices.com/AppNotes/PLXApp004.pdf

That might help!

350SS

iTrader: (38)

Wow, blast from the past. I was never able to get it to emulate the narrowband sensor. I kind of gave up when I got EFILive since I can just turn the codes off for the sensor, but it would still be nice to have accurate feedback from that bank.

Thanks for the .pdf file, I'm not sure that I have read that before, or it just has been a long time. I might have to give this a shot again.

2000c-5

- Narrowband output from PLX goes to the high side.
- I grounded the low side.
- Installed the resistors for the heater, so no codes thrown
- installed capacitors across narrowband and wideband outputs and then to ground (this would not have anything to do with it working or not, it is just to remove noise to make readings more accurate.)

350SS

iTrader: (38)

Thanks alot...makes things easy.

350SS

iTrader: (38)

btw...where was everyone on this a year ago

marthastewart

iTrader: (1)

saving money to buy it

2000c-5

Driving an F-250 diesel.

marthastewart

iTrader: (1)

I just got my PLX today, and I think your post would help greatly if you could dumb down a few things.

1 What do you mean by "high side" and "low side"?
2 What resistors? I dont think mine came with them. Where did you install those at?
3 Have any pics of the installed capacitors? I really dont see how these get installed.

TIA

tici

iTrader: (1)

You need the capacitors. Try even bigger than what PLX suggest (at least double capacity).
Be sure they are Tantalium and are connected correctly (they have + and -).
I did it and it worked fine for me.