turbod16y8

someone on here posted that they had a problem about the alternator not kicking in until a certain rpm after doing the obd2-obd1 conversion. i searched for an hour and cant find the post. its something about cutting one wire????

turbod16y8

ttt need to find this post. i know someone remembers it. it was about the obd2 car converting to obd1 and it made the lights dim and get brighter at certain rpm. someone found out that all you had to do was cut a wire..?????

Mase

Yup, that was me , i was first person who figured that out. you simply disconnect the alt c wire.

turbod16y8

thanks alot mase!!.....

Mase

lemme know how it works

espanol

what year and model car does this problem occur.i've never seen or heard of it.??

Mase

depends, heard this problem on civics and integras, all on obd2 to obd1 cars of course

IDriveHonda

Mine is doing this right now among other things, I thought it was a bad ground but they all checked out. What wire is alt C? Can you go in further detail for me?

phiberoptik

bump.... my lights dim also.

Mase

actually, if you disable the ELD in the romeditor, it will get rid of this problem too, im not sure the pin thats the alt c....ill dig it up

Mr.DC2TurBo

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by phiberoptik &raquo;</TD></TR><TR><TD CLASS="quote">bump.... my lights dim also.</TD></TR></TABLE>

same with mine... details please

Mase

from what i gathered, A16 appears to be the Alt C wire.

Mase

it has something to do w/ the ELD. for some reason the ecu turns on and off the alternator. before you were able to disable the ELD within the hondata software, i used to have stage 2 (before s200 was out) and i figured out if i disconnected the alt c wire, it got rid of this problem. now its easier to just choose the "disable ELD" option in the romeditor. but if you dont have access to do so, just disconnect the alt c wire, and it SHOULD fix the problem.


no promises though, be careful messing w/ the wiring, if you dont know what the hell you're doing, you can screw **** up quick

IDriveHonda

On my 99 hatch I believe that the ALTc wire at the ecu is pin C2.

Mase

u sure about that?

id triple check, heh

IDriveHonda

I read it in my helms electronic troubleshooting manual. Mine is a 99 which is different from 96-98.

Mase

im saying the Alt C pin on the obd1 ecu. im sure its different for obd2

HXMan

Here is the post you were looking for.

https://honda-tech.com/zerothread?id=659590

hybridb18

that was me, it was like a few months ago

hybridb18

i posted something like this a while ago, got the same damn problem, i hate it

turbod16y8

for my car OBD2.5 its the C2
OBD1 is the A16

hybridb18

yea, obd1 is a16, and 96-98 obd 2 is a19. i just cut the alt c wire and it works perfect now. WOOT WOOT!!!!!!!!!!!!!! constant 14 volts at all times now!! i thought i was the only one with this problem

Arturbo

Mase is so smart


***.

phiberoptik

sorry to be an idiot but just to make sure I dont do anything wrong... I have a 96 ex with the stock harness converted to obd1 using a "chipped p28". Do I cut a19 off the stock obd2 harness or a16 off the obd1 conversion to the ECU??

IDriveHonda

A19 off of the stock harness, I would not cut it, Just take the pin out of the plug, you might ned it again.