Interesting A/F Guage problem
02-19-2004, 07:02 PM
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Interesting A/F Guage problem
well, hooking up the good ol' Autometer A/F guage in my car. Ive got a 95 EX, with B16 and chipped P28. I tapped into the white wire (D14) at the ecu with the purple wire from the autometer, it is correctly grounded, and supplied with power... well, it didnt read. Just sat there at full RICH, and didnt move...
so, i figure, what the hell... ill try it a different way. I CUT the white wire, so it no longer goes to the ECU, it goes DIRECTLY into the purple wire for the a/f guage. I figure ill throw a code, but there's no harm in trying this just in case i didnt tap into it well enough (by the way, by tapping, i mean: cutting wire, stripping wire, and soldering it back together, then shrink wrapping it)
results..... NO CEL, NO Reading. It still just sits there at fully rich, and doesnt move... with no check engine light???
lil help fellas?
so, i figure, what the hell... ill try it a different way. I CUT the white wire, so it no longer goes to the ECU, it goes DIRECTLY into the purple wire for the a/f guage. I figure ill throw a code, but there's no harm in trying this just in case i didnt tap into it well enough (by the way, by tapping, i mean: cutting wire, stripping wire, and soldering it back together, then shrink wrapping it)
results..... NO CEL, NO Reading. It still just sits there at fully rich, and doesnt move... with no check engine light???
lil help fellas?
02-19-2004, 07:15 PM
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Re: Interesting A/F Guage problem (Simple)
Umm...dunno man. I'll be the first to tell you that autometer guage is'nt worth dick. Unless you have a wideband 02 sensor, there is no point in even having an A/F guage in your car. My guess about it sitting at full rich is that your car was cold, and they will all sit at full rich until your car gets warmed up.
02-19-2004, 07:24 PM
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Re: Interesting A/F Guage problem (Ricey McRicerton)
Are you sure you tapped d14 ? Mine was white with a half asssed red stripe through it. Or broke light show gauge ?
02-19-2004, 07:25 PM
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Re: Interesting A/F Guage problem (Ricey McRicerton)
well, i figured that as well, so i waited for it to warm up, then did a couple revs.... got nothing. I also tried hooking up a halmeter A/F guage thats hella more accurate then the autometer, and it didnt read either. I even tried tapping into ALL the 02 sensor wires... and never got a read... and never got any CEL's either
02-19-2004, 07:26 PM
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Re: Interesting A/F Guage problem (Im Rick James)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Im Rick James »</TD></TR><TR><TD CLASS="quote">Are you sure you tapped d14 ? Mine was white with a half asssed red stripe through it. Or broke light show gauge ?</TD></TR></TABLE>
its a white insulated wire. I even counted the ECU pins about 5 times. A14 is empty, so i wasnt looking at it backwards. it's the right wire... just no read.
its a white insulated wire. I even counted the ECU pins about 5 times. A14 is empty, so i wasnt looking at it backwards. it's the right wire... just no read.
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02-19-2004, 07:31 PM
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Re: Interesting A/F Guage problem (Im Rick James)
it could be... but seeing on how i dont even have a connection from the o2 to the ECU right now... why dont i have a CEL?
02-19-2004, 07:32 PM
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Re: Interesting A/F Guage problem (Simple)
Do you have the bulb in there ? I knwo sounds retarded as hell but my friend didnt even notice this till about 3 weeks after he bought the car. But also ..It takes the O2 sensor code about 10 mins to come on and some Hwy driving. Have you done all that ?
02-19-2004, 07:34 PM
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Re: Interesting A/F Guage problem (Im Rick James)
**edit** Yes the bulb is in there
nah its just been sittin in my driveway... ill take it over to my GF's house a lil later on... see if i get any readings or CEL's tonight. other than that, im baffled.
nah its just been sittin in my driveway... ill take it over to my GF's house a lil later on... see if i get any readings or CEL's tonight. other than that, im baffled.
02-19-2004, 07:36 PM
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Re: Interesting A/F Guage problem (Simple)
You should def get a code then ..Its prob going to be the code for the heat whatever. Sence its a 4 wire its heated and takes awhile for it to warm up and read accurately .
02-19-2004, 07:44 PM
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Re: Interesting A/F Guage problem (Simple)
and unless i missed this did u try taping into the white wire coming directly from the o2 sensor and see if u where getting a reading
02-19-2004, 07:57 PM
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Re: Interesting A/F Guage problem (streetdreams02)
here's an odd *** up-date...
I went out with my volt meter. and grounded the black end to the chassis. Then i took the red end, and touched the wires leading into D14.
The autometer guage was at full rich. But when i pressed the red testing lead from my volt meter onto d14 it went to full lean.
The harder i pressed the red testing lead onto d14, the brighter the lean bar got, then moved to stoich, then if i pressed REALLY hard, it moved all the way back to rich agian. i could move the between lean-stoich-rich according to how hard i pressed on the red testing lead to the wire d14... WTF?
I went out with my volt meter. and grounded the black end to the chassis. Then i took the red end, and touched the wires leading into D14.
The autometer guage was at full rich. But when i pressed the red testing lead from my volt meter onto d14 it went to full lean.
The harder i pressed the red testing lead onto d14, the brighter the lean bar got, then moved to stoich, then if i pressed REALLY hard, it moved all the way back to rich agian. i could move the between lean-stoich-rich according to how hard i pressed on the red testing lead to the wire d14... WTF?
02-19-2004, 08:06 PM
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Re: Interesting A/F Guage problem (Im Rick James)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Im Rick James »</TD></TR><TR><TD CLASS="quote">Are you sure you tapped d14 ? Mine was white with a half asssed red stripe through it. Or broke light show gauge ?</TD></TR></TABLE>
check for this color wire at your ecu.. mine was not the white wire, it does have a little red stripe in it.. i hooked mine up the wrong wire first and it did the same thing as yours.. you got the wrong wire.. follow the ecu wires up a bit and all the o2 sensor wires are in sheilded wire and you will see the white/red wire..
check for this color wire at your ecu.. mine was not the white wire, it does have a little red stripe in it.. i hooked mine up the wrong wire first and it did the same thing as yours.. you got the wrong wire.. follow the ecu wires up a bit and all the o2 sensor wires are in sheilded wire and you will see the white/red wire..
02-19-2004, 08:35 PM
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Re: Interesting A/F Guage problem (hybrid94Si)
umm,..hook it up the way you had it at first,..because that was the right way,..turn the car on and let the car warm up,..after awhile,.. the light will start to dance like normal 
02-20-2004, 06:16 AM
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Re: Interesting A/F Guage problem (2.0 EK)
well, i went out and drove the car for about 30 mins... SLOWLY, the light started to move from fully rich to generally rich, very seldom stoich, and never lean. It doesnt move radically like all the other ones ive seen. i think i might have a shorted wire that could be causing a weak signal.
03-02-2004, 07:53 PM
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Re: Interesting A/F Guage problem (Simple)
me and another h-t member jsut finished installing one on my car and we had the same problem, mine still doesn't move...i hit d14 too, and still nothing, i'm stumped 
03-02-2004, 09:07 PM
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Re: Interesting A/F Guage problem (Simple)
my summit racing a/f gauge did that. turns out it was junk.
would go to fully rich, and then slowly go down to completly lean.
but if they signal wire wasn't hooked up it would just sit at full rich. and if i grounded the signal wire it would go completly lean.
so your meter might be bad. just throwing something else out their.
would go to fully rich, and then slowly go down to completly lean.
but if they signal wire wasn't hooked up it would just sit at full rich. and if i grounded the signal wire it would go completly lean.
so your meter might be bad. just throwing something else out their.
03-02-2004, 10:21 PM
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Re: Interesting A/F Guage problem (Simple)
i dont know about you guys but i have a chipped p28 in my ek and all i get is a reading pegged in the green but when i plug in my stock ecu in it works fine.
then i adjusted my regulator and leaned it out, put the p28 back in it works fine just like it was a stock ecu
i would recomend putting a civic vx o2 sensor they're the poormans wideband from what i hear
then i adjusted my regulator and leaned it out, put the p28 back in it works fine just like it was a stock ecu
i would recomend putting a civic vx o2 sensor they're the poormans wideband from what i hear
03-03-2004, 01:07 AM
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Re: Interesting A/F Guage problem (jdmexsi)
i might be wrong, but my guess is it's cuz of the rechipped p28. most if not all aftermarket programs run richer anyways.
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