OBD II?

[240racr]

Has anyone done a SR swap and had to deal with OBD II? I want to do a SR swap, but I don't know if I can get it to pass OBD II check.

Any info would be great!

[DSC]

I'm not quite sure what your asking <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/confused.gif" border="0" valign="absmiddle" alt='???'>

Assumeing your droping in an s13 SR, you will no longer have OBD-II so it won't be an issue. &nbsp;If the later model SR's came with ODB-II (and I don't know that they did) then it should come with what you need to hook it up...again, no problems.

[240racr]

I am looking to drop an S15 sr in. I don't have to pass smog, but I do have to pass OBD II.

[Kreator]

DSC, since s14s came with obd II, it's kinda illegal (in all states?) to drop an s13 engine in since it's not obd II... Therefore we can only swap 95+ year srs in our cars...

I don't know the answer to the question though, since i'm not really into srs..

[rabbit23]

actually 95-96 came as obd I, and 97-98 are obd II.
ok, i am for sure 95 is obd I, but am only guessing on the 96.
chad-

[DSC]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (Kreator @ June 03 2002,3:54)</td></tr><tr><td id="QUOTE">DSC, since s14s came with obd II, it's kinda illegal (in all states?) to drop an s13 engine in since it's not obd II... Therefore we can only swap 95+ year srs in our cars...

I don't know the answer to the question though, since i'm not really into srs..</td></tr></table><span id='postcolor'>
It's illegal to drop in ANY SR20det motor in ANY (street driven) car in the united states, period.

So whether or not it has OBD-II or is from an older car is a moot point...

Rabbit, 95's were the only s14 to some with ODB-I, 96-98 used ODB-II.

[Kreator]

<!--QuoteBegin--DSC+June 04 2002,6<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wow.gif" border="0" valign="absmiddle" alt=':0'></span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (DSC @ June 04 2002,6<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wow.gif" border="0" valign="absmiddle" alt=':0'>8)</td></tr><tr><td id="QUOTE">It's illegal to drop in ANY SR20det motor in ANY (street driven) car in the united states, period.</td></tr></table><span id='postcolor'>
I know that. No need to point that out.

edit: kinda messed it up. You can't drop in the s13 KA into the s14. Somehow i confused it with SR motor. Oh well, sorry, my mistake.

[rabbit23]

depends on the state, but in texas they don't look under the hood for any reason. they kick the tires and slap a new sticker on. (at least in austin they do). so an s13 sr20 in an s14 is fine.

[drift freaq]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote </td></tr><tr><td id="QUOTE">rabbitt says...actually 95-96 came as obd I</td></tr></table><span id='postcolor'>

errr, maybe in your state, but here in California 95's were indeed OBDII. 91-94 were OBDI here.

[uuninja]

Ok a few things need to be cleared up here.

1, there is not a state in the country that conducts a "OBD" test. OBD stands for "on board diagnostics" IIRC. Basically it was an industry wide approach comply with emmisions standards, by having the car monitor the levers and ammount of waste comming out of the tail pipe. If it exceeded the thresh hold the car would alert the owner that service was needed. Well in theory at least.

Threre were 2 versions that came on the 240. OBD I and II. Depending region the fault tolerences were different. Hence the trem "California emmisions". However not all CA 240's were OBDII because it wasn't introduced untill some where around 95 or 6. &nbsp;

From talking to Clark at JWT it is my understanding that all Nissan ODB systems are passive. They do not effect timing mixture ect...They only turn the CEL.

All that any state even CA measures is what actually comes out of the tail pipe as far as emmisions go. If it smells good they are happy. However this is not the case in a visual inspection. In CA you will never pass a legit inspection in a million years even if the exhaust smells like roses, with an sr.

Hope that helped.

[240racr]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (uuninja @ June 05 2002,08:54)</td></tr><tr><td id="QUOTE">Ok a few things need to be cleared up here.

1, there is not a state in the country that conducts a "OBD" test. OBD stands for "on board diagnostics" IIRC. Basically it was an industry wide approach comply with emmisions standards, by having the car monitor the levers and ammount of waste comming out of the tail pipe. If it exceeded the thresh hold the car would alert the owner that service was needed. Well in theory at least.</td></tr></table><span id='postcolor'>
Not completely true. In Portland OR, if your car came equipped with OBD II then you have to pass an OBD II test. They do have a visual as well (most are too stupid to know what they are looking at).

Also, I talked with the DEQ office and I was told that (in a nutshell) OBD II test sends out a signal to the ECU and looks for a ready signal. Then it requests any stored codes from the ECU. If you have any codes you will not pass. If you have a not ready signal (from trying to clear codes yourself) you will not pass.

That is why I am asking about OBD II compliance with later SR's. I am not worried about the visual.

[uuninja]

Interesting, never herd it called an ODB test. As far as looking for if the odb module in the ecu ever threw a code. That would make no sence, that even if you had a bad o2 sensor and it threw a code replacing it and reseting your ecu would constitute a violation of oregon emmisions law? That can't be right. Besides the ecu isn't cabible of storing codes forever. Disconnect it from it's powersource and any eprom, if it has one will be erased in an hour. If your sr is in good shape you shouldn't be throwing codes in the first place.

[BEISSEN]

Ok therer is no such thing as obd test like others have said it is emissions test that you have to worry about.I know that an obd I will have a little more slack due to being older and have an obd I.In the obd II setup it is like the hondas new cars with the lev"lower emissions vehicle".

[AKADriver]

In NY all '96+ cars have to pass this too. &nbsp;It's also part of the Maryland safety inspection. &nbsp;Check with individual testing centers to find out what they do for the test. &nbsp;Sometimes, they just test to make sure the Check Engine light comes on during startup then goes off. &nbsp;If they plug in the code reader, then, you've got trouble.

OBD2 is an American invention, and no JDM engine will be equipped. &nbsp;Part of Motorex's large conversion cost on newer Skylines is adding an OBD2 compliant system.

[uuninja]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (AKADriver @ June 04 2002,5:36)</td></tr><tr><td id="QUOTE">OBD2 is an American invention, and no JDM engine will be equipped. Part of Motorex's large conversion cost on newer Skylines is adding an OBD2 compliant system.</td></tr></table><span id='postcolor'>
That is what I thought. I knew about the CEL and the code reader but every where I have seen it is simply part of the visual/mechanical inspection. Never heard it called an "ODB" test in and of it's self. You get my point.

Hard to say how the reader will react to a ODBI ecu if it expects an ODB2 module. Since they are based on the same basic design who si to say that the troubel codes aren't the same. Or that if there wern't any to begin with, the reader would even care. But knowing those sneaky mo fo's they probably hard-wired the version in to the module.