99 1mz-fe air/fuel hook-up

[Hamsterman]

ok guys, i am almost fone with my gauge project, i will post pix in a couple days after i finish up my new razo shifter and clean up the car, i just added a TRD body kit too, but here is my question...

I am hooking up an air/fuel gauge and i have 3 wires, black neg. red positive and purple a/f sensor... I tapped into the blue wire coming off of the O2 sensor, right off the header, which i toyota told me would be the air/fuel sensor wire, but i get no reading on my gauge, there is also a white wire and two black ones, i tried to tap into the white and got no results either, so my question is this
1) am i going at the wrong wire splice all together?
2) could the gauge just be messed up, guy i bought it from said it was working before he sent it with 100% good feedback, if this is the case, how can i test that the gauge should work and it is not just me hooking things up wrong?

thanks for any response, i know a narrow band a/f is not accurate, i don't care, i have a vac gauge, volt, oil pressure and oil temp also hooked up which give me better feedback, i just needed this to fill my last pod and i got a good price
thanks for the response,
nate

[Hamsterman]

anybody help out???

[BLUEMEANIE]

I'llmove ya to the Hardcore Tech Forum, prolly get an answer there.

[Hamsterman]

sounds good, somebody here should know

[Phi]

I believe it should be Pink from the ECU. Somebody correct me if I'm wrong.
http://www.pbase.com/toycam/image/12448593/original

[Hamsterman]

hmmm, never messed with the ecu before, i will check that out
thanks

[Eye8Pussies]

argghhh.....if you really can't figure it out, I'll check which wire I tapped again...I'm sure the 1st gen of 1mzs are pretty much the same....

[Hamsterman]

i will look @ it friday or saturday, but did you tap your ecu wire or direct o2 wire pussies?

[zoni]

i got a 94-96 diagram that says its either red/blue or white. depending on front or rear bank. not sure which is which.

the way to really tell is its gonna be the one with an output of 0-5 volts when the car is running.

[Eye8Pussies]

Originally Posted by theamazingnate

i will look @ it friday or saturday, but did you tap your ecu wire or direct o2 wire pussies?

I tapped the ecu wire...

ratko originally told me which wire to tap, but then it ended up he told me the wrong one, and I remember having to try another one before I found the right one


if you really can't figure it out, then I'll check early next week to see which wire it is....it's just a hassle to remove the glove box to get to the ecu is all

[Hamsterman]

don't worry about it, i am in my car now with my laptop so i am gonna go after it then i will post up if i get it thanks

[Hamsterman]

yeah this sucks, i just tapped the pink wire and nothing came, i think the gauge is messed up, i am gonna talk to teh guy i bought it from
thanks all
nate

[Toysrme]

*Note* I've never worked on a 1mz-fe.

Hayes manual only shows one wire with pink on it for the entire ECU, a Pink w' black stripe. That's definately the wrong wire. It comes from the bank 1 sensor 2 O2 sensor, but is the HTR wire.

Bank 1 sensor 2 OXS is D26 - Black
Bank 1 sensor 1 OXR is B13 - White

btw I would think that a AAA or AA battery would move the gauge. (as long as the amperage is right)

[Hamsterman]

Originally Posted by Toysrme

*Note* I've never worked on a 1mz-fe.


btw I would think that a AAA or AA battery would move the gauge. (as long as the amperage is right)

so you think if i go
12v- red
ground-black
aa- purple, i should see some led movement? why would that be, just wondering