In the next few weeks I will be installing a wideband on my car and I plan on installing the sensor in the bung that currently holds the rear O2 sensor (in my test pipe). I have already patched up my ROM to eiliminate CEL's in preparation for the removal of the sensor, however I'm not quite sure of what is the best way to unplug the rear O2 sensor from inside the car, thus I have a few questions:

1) Should I remove the front passenger seat and the center console to gain access to the connector that is inside the car (underneath the passenger seat)?

2) When routing the wideband harness, what procedure was utilized (what was removed from the car) to allow routing this harness underneath the carpet of the passenger seat to allow it to reach the plug on the harness directly attached to the sensor?

If anyone has already performed such an installation and wants to provide some guidance, that would be greatly appreciated.

Thanks in advanced for any help!

 

Removal of the passenger seat is not necessary. You'll have to remove the center console. You'll see a rubber grommet on the passenger side under the carpet. You'll need a file (or rotary grinder) to enlarge the hole a tad to fit the o2 sensor through.

 

Thanks a bunch!!! I take it that you can probably just route the WB wiring harness following the same approach, which if I understood correctly, only requires the enlarging of the hole to fit sensor and lifting the carpet once the center console is removed. Does this sound right?

 

Which brand of wide band are you installing? I did the AEM. Did you search the "How To" section? I recall that there were some very good posts with pics on this subject.

 

I will be installing an AEM UEGO, but I searched on the how-to section and there were no pictures on how to install the WB with the wiring being routed from the rear O2 sensor location, if you recall finding something please point me to it. Thanks for the help!

 

You may be right. The reason I asked is that I installed the AEM on the very rear of the down pipe at the 12 o'clock position just before the flange. (I had a bung welded in the DP prior to installing it.) I am not sure that the AEM O2 harness will reach from the O2 sensor location on your test pipe to wherever your gauge will be mounted. Not saying it won't, but if you haven't measured it already, you may want to give it some thought. Mine was a little close to being too short.

Also, if you're running other aftermarket gauges, don't use the same ground for the AEM. There was a lengthy topic in the AEM forums about some people having erratic readings on their AEM wide band, and it seems that the culprit was having a common ground with other gauges. Apparently the AEM Uego is very sensitive. This was the AEM tech's finding, not mine. I played it safe, and used three separate ground locations for all three AEM gauges, and I've never had a problem. Sorry I can't be of more help.

 

really? i guess ill have to move my ground then

doesnt make any sense though...oh well

 

Thanks to all for the information, for those who have an AEM UEGO WB installed, how long is the harness that comes with the whole system? What I would like to do is install the sensor at the location of the stock rear O2 sensor and mount the gauge on the left hand side of the steering column.

Any feedback that will help me determine if the UEGO harness will allow me to do this will be appreciated.

 

i think you might be pushing it at that length

the cable is a few feet long, but i dunno if it'll reach

 

Humm, interesting...

 

I was able to pop the rubber grommet out from under the car and there was enough slack on the wire that the connector came out the hole for an easy disconnect. No need to take anything apart.

 

I installed mine in the cat delete pipe and in my center console and routed it threw one of the drain plugs under the passenger flor mat, worked good and still had plenty of cable to run it to the left of the steering column i wanted to.

 

Thats wat i did works good if you strap the wire good, and also made a custom bracket for the o2 plug under the car.

 

Hey Walt, which wideband do you have installed, an AEM UEGO or something else?

Thanks

 

I installed the AEM UEGO. I put the gauge in that little cubby hole under the heat and a/c controls. My buddy had a piece of carbon fiber so i trimmed it to fit behind the trim and drilled a hole in the center of carbon for the gauge. Works good