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-   -   Air/fuel ratio gauge install-wiring question (http://www.jeepgarage.org/f203/air-fuel-ratio-gauge-install-wiring-question-13542.html)

kriv4o 10-03-2010 11:15 AM

Air/fuel ratio gauge install-wiring question
 
Hi, I am really interested in adding a a-pillar dual gauge pod to my WJ. So far I am planing to have a air/fuel ratio gauge and a EGT gauge. So my question is does anybody know how exactly the a/f gauge should be wired. I've had a similar setup in my old ride but back then my mechanic just told me in which wire to tap in. Unfortunately he's not around anymore so I'll need some help on that. Thanks a lot

Harrison@Stage6 10-03-2010 11:28 AM

Re: Air/fuel ratio gauge install-wiring question
 
There's no wire to "tap in" to. If he's talking about tapping into a wire then he's talking about tapping into the O2 which will read narrowband. You need to buy a wideband setup. You will weld a new bung into the exhaust near the collector, screw in the new wideband O2 sensor, wire it up and hook it to the new gauge. It's pretty easy. There's only basically a power and a ground to hook up and plug the wire to the gauge.

kriv4o 10-03-2010 11:52 AM

Re: Air/fuel ratio gauge install-wiring question
 
Thanks for the fast response. I forgot to say that my old car was a '94 so all I had to do is tap into a wire. This one sounds very complicated. Can you explain the "weld a new bung into the exhaust near the collector" part.

Harrison@Stage6 10-03-2010 12:12 PM

Re: Air/fuel ratio gauge install-wiring question
 
A bung is what the new O2 sensor screws into. Here's a few pics. In your 94 you were still tapping into a narrowband. No car comes factory with a wideband sensor. Narrowband read 0-1V. Wideband reads 0-5V.

http://i609.photobucket.com/albums/t...onepics413.jpg

http://i609.photobucket.com/albums/t...20Pics/077.jpg

Harrison@Stage6 10-03-2010 12:13 PM

Re: Air/fuel ratio gauge install-wiring question
 
It's not complicated at all..... just sounds complicated. Any muffler shop can weld the bung in for you.

kriv4o 10-03-2010 12:26 PM

Re: Air/fuel ratio gauge install-wiring question
 
So basically no matter what I do i have to get the wide-band set up.Any chance I can use whats already in the Jeep?

Harrison@Stage6 10-03-2010 12:39 PM

Re: Air/fuel ratio gauge install-wiring question
 
No..... you can not use what's in the Jeep. The stock is narrowband. A narrowband O2 sensor can not read wideband. Wideband kits range from $200-300. Why risk your engine on trying to use the wrong thing?

kriv4o 10-03-2010 01:04 PM

Re: Air/fuel ratio gauge install-wiring question
 
I was planing to use the gauge only to display the ratio not to tweak the engine. this is turning to be a project bigger than I wanted but I'll work on it regardless.


Now I have another question: How hard is it to install a transmission temp. gauge(mainly the sending unit)?

Harrison@Stage6 10-03-2010 01:13 PM

Re: Air/fuel ratio gauge install-wiring question
 
What year and what motor Jeep do you have? You may as well buy a MSD Dash Hawk. It will display tranny temp for you and it just plugs into the OBD-II port.

kriv4o 10-03-2010 01:16 PM

Re: Air/fuel ratio gauge install-wiring question
 
Its a 2004 GC Laredo

Harrison@Stage6 10-03-2010 01:20 PM

Re: Air/fuel ratio gauge install-wiring question
 
What engine?

kriv4o 10-03-2010 01:36 PM

Re: Air/fuel ratio gauge install-wiring question
 
it has the 4.0l I6 in it


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