I am adding a o2 simulator, to get rid of a pesky check engine code. I need to know the wire diagram a 98 type-r us spec. I looked and can't find any info on what wire it is on the ecu. I need to by pass the o2 sensor after the cat. Thanks in advance for any help.


Sully

 

why don't you just fix the original problem???

 

I just did this last night. A friend of mine built an 02 sim for me.

However my car is a 97 R, so my wiring may be slightly different. Also we had to do some troubleshooting because the helm's manual I had has one of the colors listed wrong.

We ended up using this link here.

Pin-out/wiring



I'm not sure if the 98 R is also OBD-II A, so if that doesn't work, here is the index to that link.

FF-Squad Tech NET

Good Luck :goodjob:

 

1. A new sensor is spendy.

2. The secondary O2 does nothing for the ecu as far as tuning the fuel trim is concerned. It is strictly there to make sure your cat is workign properly.

Lastly, my secondary was rubbing on my shift linkage... It's better to remove it, plug the hole, and run an 02 sim.

 

I'm trying to build an O2 sensor sim. setup. I was wonder if you know what your friend used to simulate the heater circuit. I used two 10 Ohm, 10 Watt resistors. Check engine light still returns 70 miles later. Any info will help.

 

Ill check w/him. I'm definatley no EE, but I think he used a 555 timer? He said something about it sending a modified sine wave back to the ecu. I'm not sure if this has anything to do w/the heater signal, sounds more like the driver to me.

If mine continues functioning properly will put them up on the site and start selling them. Prices should be very reasonable.

Stay tuned and Ill get back to you w/more specific details.