gauge installs - Honda Prelude Forum

WOT247 · 01-04-2002, 12:08 AM

Hey guys with the extra holiday cash I picked up some new toys, let me first say that brembo rotors with aem pads.... well nice. I like the brakes a lot and would suggest both to anyone who is thinking about it.

Now I got 2 gauges, one for oil pressure (it is electrical, not mechanical) and an air/fuel gauge. My first problem is that I think I wired my a/f wrong, can someone just give me the wire they tapped into either on the O2 sensor on the cat, or at the ECU. The problem with the oil pressure is that the threads for the sensor are standard sized, where can i get a metric converter, and just to double check where does the oil sensor hook up? Thanks a lot.

Preludegod · 01-04-2002, 08:35 AM

the AF meter hooks up to the all white wire on the 3rd harness in your ECU. its the big one on the bottom if your looking at it from the top (if your confused call me)

The oil pressure is easy. go to NAPA and get a brass T-adaptor that you screw into the block and then on one side you hook the sender and on the other side hook in the stock sensor exspecially if you have VTEc since VTEC is run off of oil pressure.

WOT247 · 01-04-2002, 12:19 PM

i guess my question with the oil pressure is where do i hook in this sensor? I have no idea where in the oil line it goes, but thanks for the help with the a/f gauge, that should be easy.

Preludegod · 01-04-2002, 12:33 PM

in the back of the block on the H23 it is right below the oil filter. the stock on is short and stubby and has a single wire plugged into the back of it.

WOT247 · 01-04-2002, 12:47 PM

I'll check it out, I hope it is the same for the H22. Thanks for the help, I'll see what I can find...btw do you know what sizes i need on that t-adapter? I know i have a quarter inch, but I need one side quarter inch, next side... next side...

Preludegod · 01-04-2002, 12:51 PM

not off the top of my head....i brought the two pieces down to napa and tried out a couple fittings. granted the thread sizing was just a tad off it made no real big deal. just make sure you use some silicon sealant tape on the threads before you screw everything together. this keeps it leak tight.

ill try and take a digi pic of it tomorrow.....email me tomorrow night and ask for it

WOT247 · 01-05-2002, 12:14 AM

what two pieces did you take down to napa, the sensor and....

siracer · 01-05-2002, 04:29 PM

I've been thinking about getting gauges myself, but I wanted to get good ones and see some pics of where other 'lude owners had installed them in 4th gens. Any advice or pics would be great!

WOT247 · 01-05-2002, 04:35 PM

i got the pod that goes on the a- pillar... not what i expected I was expecting autometer to do something like lo-tek does, a pod that is built into a whole new a-pillar rather than something that sits right on top of the existing, but i would probably buy it again

WOT247 · 01-12-2002, 02:54 PM

Okay, they are in, and I have it hooked up to the white wire on the ecu, the gauge reads lean until I hit 4000rpm and then it just goes off the chart, like it will go from red to like the last bar of green. Never goes into stoich or anything... Do I have a faulty gauge, what is going on here?

EuroPreludeSI · 01-12-2002, 03:03 PM

autometer phantom series gauges, left: manual air vac, middle: digital air/fuel ratio, right: manual oil pressure ... custom mounted in passenger side dash. this is for the guy that said he wanted pics of gauges in 4 gen's ... and im out

~k~

WOT247 · 01-12-2002, 03:08 PM

I have that same gauge, and that pic shows where mine goes when the car is 4000rpms and higher, see that little green light on the a/f gauge? That is right where my gauge jumps to as soon as i go over 4000rpms, anyone else with this problem? I am always lean or what appers to be rich, never stoich.

Machine Head · 01-13-2002, 12:33 PM

Quote:

Originally posted by Preludegod
the AF meter hooks up to the all white wire on the 3rd harness in your ECU. its the big one on the bottom if your looking at it from the top (if your confused call me)

The oil pressure is easy. go to NAPA and get a brass T-adaptor that you screw into the block and then on one side you hook the sender and on the other side hook in the stock sensor exspecially if you have VTEc since VTEC is run off of oil pressure.

Hey prelude god bout time you come hang out here...SO why are you selling your motor?

brendon2k · 01-16-2002, 09:34 PM

On the instructions it explains more in detail how it works. It bounce back and forth at partial throttle because the injectors are constantly being adjusted. At WOT(above 80%) the o2 sensor isn't being used to control the injectors. The fuel is then all of the fuel maps on the ecu. At WOT the car is not trying to optimize fuel efficiency and it should read somewhat rich.

WOT247 · 01-16-2002, 10:02 PM

well even at less than WOT it just reads lean... so could this be because of my CAI? Much more cold air so even though the injectors are bouncing all the air is overwhelming? Oh and I don't have anything hooked into the O2 sensor just the white wire on the ecu...

LoudLude · 01-17-2002, 12:17 PM

Quote:

Originally posted by WOT247
well even at less than WOT it just reads lean... so could this be because of my CAI? Much more cold air so even though the injectors are bouncing all the air is overwhelming? Oh and I don't have anything hooked into the O2 sensor just the white wire on the ecu...

uuu something is not right. It shouldnt read lean at WOT. I wonder if your O2 sensor is bad?

btw- where in ohio are you?

WOT247 · 01-17-2002, 01:51 PM

okay, lets just do some refirmation here:
I hook the gauge into a white wire on the ecu, correct? So I should not have anything hooked into my 02 sensor, correct?

I live in central ohio, about 15 minutes from columbus in a city called Dublin. Oh and does the O2 sensor need to be changed by 160k miles?

WOT247 · 01-18-2002, 03:36 PM

i fixed my last post and Lord lude I didn't know about the lude meet, gimme details.

LoudLude · 01-18-2002, 11:52 PM

Quote:

Originally posted by WOT247
i fixed my last post and Lord lude I didn't know about the lude meet, gimme details.

yes that is correct. It is the same wire essentially that you are tapping into, its just easier to hit it on the ecu because of all the shielding on the wire close to the O2 sensor.

The prelude meet is set for Saturday February 2 around 12-1:00. Do you know where Ackerman Rd. off of 315 is? I guess there is a huge lot you can see it from the freeway. You exit ackerman, and I think if you were coming from dublin you would turn left off of the exit, then turn right at the next light. We are all gonna meet in the parking lot right there. I dont know what we are gonna do yet, but I would guess BS around and check out the ludes until we get froze, then maybe caravan to a food joint or something........ I will be there weather permitting. send me your email and I will add it to the list.

If we both show up, I could take a peek at that gauge and see if it seems right.

Frost_White94Si · 01-20-2002, 01:09 AM

i have an autometer a/f guage and am also having problems... i spliced into the wire in the engine compartment under the fuse box....

it is reading extremel lean... usually i dont get any reading at all... but sometimes right when i turn the car on or when im at WOT it will creep up to the 1 or 2 bars from leanest... im assuming its a bad 02 sensor....