civic vx 02 sensor UPDATE and lean burn monitor ?

[coletrain777]

So...
I finally got my new o2 sensor for my new vx. I read a few reviews from a seemingly sharp guy over on gassavers and he said that he used the $77 one from ebay and that it worked great.
1992-2000 Honda Civic Upstream O2 Oxygen Sensor: sg335-REA1134-36531-P07-003-36531-P2M-A01 Auto Parts Direct To You | AutoPartsDirectToYou.com

I decided to order it and it arrived today. I popped it into my vx and went for a drive...WOW it felt great. So I went back home, got my voltmeter and hooked it up to monitor the lean burn, and went for a drive. Sure enough the lean burn works great with this o2 sensor. I can feel it engage, and see the voltage go to the positive side when it engages (around +.52 at 60mph). It is really nice having the meter hooked up so I can see that I am in lean burn (although nowhere in my drive around did I ever kick it out unless I really tried).

Now what I would like to know is does anyone have a step by step to making a light-up lean burn monitor (like a green light that turns on)? Please be very thorough in your explanation b/c I am an electronics dummy.

Just thought I would let everyone know about the cheap o2 sensor and pick your brains a little more.

I am ready to start tracking mileage and see what this thing can do!!!

[Mpgian]

I'm with ya on this one, I want a Eco-light too!

[TYPE-R KING]

Ebay 380329349721.... not cheap but nice
Im using a lm1 wideband moniter...off of my turbo car

[Mpgian]

I like this gauge, but a simple LED would be nice too

I want an upshift led (yellow)
A lean burn led (green)
And a vtec led (red)

So I can better my driving habits...

I think the lean burn led could be hooked up to a8
The vtec led to a4
And the upshift led pin I'm still looking for...

[turbothrush]

As far as the leanburn light goes I use the jcar multi voltage monitor but if you can design the circuit yourself the input to your LED would be to the IP+ pump cell positive terminal which is D14 (orange/blue wire) on the ECU. I find that it is best not to obey the upshift light. Just stay in leanburn as much as possible.

[justjohn]

I just got an HX and one of the first things I found myself wanting was a lean burn monitor as well. Are there perhaps any step by step guides for something similar so I could just like connect to D14 instead of whatever they say and get a lean burn indicator?

A simple green LED for "lean burn on" would be fine, I don't need to make anything terribly complicated.

[Mpgian]

Try a led with a resistor. Tap the pos side to a8 (you will need a harness pin/wire) and the neg side to an alligator clip grounded to the body somewhere...

I did this and it comes on during startup (with the other gauge lights) but I haven't been into leanburn yet (new swap, still working out the bugs)

Let me know how this works! I think it will be what you are after

[steffen707]

Originally Posted by coletrain777

So...
I finally got my new o2 sensor for my new vx. I read a few reviews from a seemingly sharp guy over on gassavers and he said that he used the $77 one from ebay and that it worked great.
1992-2000 Honda Civic Upstream O2 Oxygen Sensor: sg335-REA1134-36531-P07-003-36531-P2M-A01 Auto Parts Direct To You | AutoPartsDirectToYou.com

So i clicked on this link and it takes me to a $200 O2 sensor. Where is this $77 one you speak of?

[bestclimb]

here you go

[robertsvx]

Hobbs adj vac switch could work to turn on & off a light.maybe 2 hobbs switches since lean burn kicks in & out at 2 different vaccum levels. I like a vacuum gauge because There is a lot of peddle in lean burn mode where the car doesnt go any faster.Example:I can drive a steady 55mph in lean burn at 8in hg.then let off the gas peddle to 15in hg & still be going the same speed but gets better mpg.