how to prove my 95 ka motor is obd1

[Norcaldime]

So long story short i got a ref ticket in my 510 with a 95 ka in it.

The ref was saying that my car was obd2, he was going of the jim wolf list were he has all 95 240s listed as obd2, but i know some of them were obd1.

My harness only has an output for one o2 sensor, and it isnt a 3 wire heated one.

So basically the guy is telling me i need all this extra obd2 stuff, ie 2 heated o2 sensors, needs to be obd2 ready, full evap for obd2 blah blah.

I was gonna try and legit smog this but as long as dude puts it as obd2 i wont be able too.

i have an auto ecu A18E08G91

any insight?

this is a big fat headache and im probably going to end up selling my car because of it.

here are the boner laws

Here's some of the actual laws, excerpted as appropriate:

Here's the law showing pre-76 vehicles to be exempt, 44011.A.3:
44011. (A) All motor vehicles powered by internal combustion
engines that are registered within an area designated for program
coverage shall be required biennially to obtain a certificate of
compliance or noncompliance, except for all of the following:
(3) Any motor vehicle manufactured prior to the 1976 model-year.


HOWEVER, this is the law that bones you right in the ass, 44011.C.i:
© Any motor vehicle excepted by this paragraph shall be subject
to testing and to certification requirements as determined by the
department, if any of the following apply:
(i) The department determines through remote sensing activities or
other means that there is a substantial probability that the vehicle
has a tampered emission control system or would fail for other cause
a smog check test as specified in Section 44012.

You're exempt, unless a cop thinks you would fail an emissions test, in which case they can say you have to get smogged.

[gunmetalr32]

wtf that sucks .. what year is your 510

[Norcaldime]

it is a 1972

[DMaxUSA]

You can tell by looking at the intake manifold, if you see a bunch of vacuum lines and harnesses on top of the intake manifold, its an OBD2. If it looks relatively bare, its OBD1.

Those vacuum lines and solenoids were part of the emissions control system which is only present on OBD2.

For reference only 95 S14s came with an OBD1 KA, 96-98 s14s have OBD2.

[Norcaldime]

You can tell by looking at the intake manifold, if you see a bunch of vacuum lines and harnesses on top of the intake manifold, its an OBD2. If it looks relatively bare, its OBD1.

Those vacuum lines and solenoids were part of the emissions control system which is only present on OBD2.

For reference only 95 S14s came with an OBD1 KA, 96-98 s14s have OBD2.


Yeah my motor was pretty bare when i got it, allthough all emissions were removed by me, and now i was gonna put them back on but dude says my motor is obd2 because that jim wolf diagram shows that it is.

I need hard evidence to prove that it is obd1

[mr_kill_666]

i remember when i took my car to get its inspection stick, the places computer claimed all 1995 240sx as obd1 ( that was here in texas). maybe that could help.

[LongGrain]

i was under the impression that 96 was the crossover year, and that all 95 cars were obd1 and 96's were obd2

[Norcaldime]

the guy was going off of this

http://www.jimwolftechnology.com/wolfpdf/ECU-ID.PDF

A18-B93 G01 95 240SX N A U OBD2 S14-KA24DE 23710-70F05
A18-E08 G91 95 240SX N A U OBD2 S14-KA24DE 23710-70F07
A18-E88 G94 95 240SX N A U OBD2 S14-KA24DE 23710-70F08
A18-B92 G00 95 240SX N M U OBD2 S14-KA24DE 23710-70F00
A18-B92 G21 95 240SX N M U OBD2 S14-KA24DE 23710-70F01
A18-E07 G90 95 240SX N M U OBD2 S14-KA24DE 23710-70F02
A18-E87 G93 95 240SX N M U OBD2 S14-KA24DE 23710-70F03

mine being the one in yellow. JWT has all 95's listed as obd2 :(

[aznpoopy]

counter with AEM and the fact they make two EMS + uego for the 95 (and two non UEGO).

http://www.aempower.com/images/products/Installation%20Instructions%2030-1610.pdf
Installation Instructions for:
EMS P/N 30-1610 and 30-1610U
95 Nissan 240SX (OBD1)

http://www.aempower.com/images/products/Installation%20Instructions%2030-1611.pdf
Installation Instructions for:
EMS P/N 30-1611 and 30-1611U
95-98 Nissan 240SX (OBD2)

at the very least it shows some 95's were OBDI. i think the changeover was actually made in 1994 while s14's were being manufactured and some later 95's may actually be obdii. but who the hell knows. maybe r240na does

[blackrms13]

AFAIK, early 95 KAs were OBD-I, half way through the 95 model year, they changed to the OBD-II

i have a 95 OBD-I KA in my s13....

[let5l1de]

early 95 may be OBDI (1), mid to late 95 is OBDII (2) minus additional smog related items of a 96 and up

I just passed my state ref smog in my 89 coupe with a 95 OBD2 (heated O2 sensors, no map/baro sensors).

Tell him to smog as a 94 OBD1. Be sure to have all the smog equipment needed for that year make and model you state it as. If you state a 95 and Later OBD1 or 2, Be sure to have a working CONSULT port as refs do not use the std port. Also be sure to have a working check engine light with no codes being thrown. The Auto Engine ECU will not be a good choice since it looks for incoming signals from the auto Trans ECU (i tried to get around this with mine and ended up swapping with a manual ECU).

USE a FSM for whatever model stated and print the pages showing all emissions devices and hose locations. Also print the typical specs such as engine family, ignition timing, rpm at idle and whatever else related to properly test the engine.

gl with smog.

[FRpilot]

man i thought all pre 76 vehicles would be smog exempt and you could put in an rb26 with no cats and it would be fine.

didn't know this little loophole existed that if a cop thinks you need a smog, all that smog exempt status goes out the window.

you learn something new everyday.

[Norcaldime]

early 95 may be OBDI (1), mid to late 95 is OBDII (2) minus additional smog related items of a 96 and up

I just passed my state ref smog in my 89 coupe with a 95 OBD2 (heated O2 sensors, no map/baro sensors).

Tell him to smog as a 94 OBD1. Be sure to have all the smog equipment needed for that year make and model you state it as. If you state a 95 and Later OBD1 or 2, Be sure to have a working CONSULT port as refs do not use the std port. Also be sure to have a working check engine light with no codes being thrown. The Auto Engine ECU will not be a good choice since it looks for incoming signals from the auto Trans ECU (i tried to get around this with mine and ended up swapping with a manual ECU).

USE a FSM for whatever model stated and print the pages showing all emissions devices and hose locations. Also print the typical specs such as engine family, ignition timing, rpm at idle and whatever else related to properly test the engine.

gl with smog.

Well i want to get by with the 95 obd1 smog. if i go 94 or lower i have to mess with the PAIR-c thing and i dont want to get an s13 manifold and try and adapt that in there. the stock outlet location is right were my steering box is so i would have to "modify" it to make it work and i dont think that will fly.

Plus if i drop back down to s13 im gonna need to change my harness since mine doesnt have plugs for swirl valves.

man i thought all pre 76 vehicles would be smog exempt and you could put in an rb26 with no cats and it would be fine.

didn't know this little loophole existed that if a cop thinks you need a smog, all that smog exempt status goes out the window.

you learn something new everyday.

Yeah i know isnt it great! :barf:

[let5l1de]

BTW: Nissan FSM for 95 shows only the OBDII (2) style ECCM (ECU) wiring diagram with the 2 heated O2 sensors without the MAP/BARO sensors of 96 and up.

~mario

[ericcastro]

Yeah i know isnt it great! :barf:

You gotta love how they make it more and more so the cops can just profile and decide who they wanna fuck.

I had a ticket for no front plate, and the fucking prick put non fixable so i would get charged hundreds.

I tried not to for so long, but they just prove how much of a bunch of fucking pricks they are.

oh well.

You have to go in to have it done at the actual ref center? or just a smog place?

PM me if any smog place will do.

i wouldnt sell the 510
zilvia cant condone this, but ive heard.....
.............borrow someones that has a L16 in it, toss ur plates and vins on, and go pass it.
fuck that cop.

I also file alot of complaints on officers stating profiling, violations of rights, excessive anything they do.
People need to start fighting back.
If you feel you have been violated, you can contact the ACLU

[98s14inaz]

What you need to do is find an engine vin plate off of a 94 or earlier block and rivet it in the plate spot on your engine. Have the ref run the vin and he will see what year the motor was from. Also remind the ref that not everything on the internet is true.

[ruudbwoy]

some 95's were manufactured in 94...giving them a obd1. i have an early model 95 with ka and sometime gets to be a pain when i cant get the codes checked.

[mestizo]

95 S14 with an OBD1 KA uses a single wire O2 in front and a 3 wire skinny O2 after the pre cat. OBD1 KA intake mani's have far less solenoids on them and the charcoal canister is in the engine bay.

95 S14 with an OBD2 KA uses a 3 wire fat O2 in front and a 3 wire skinny O2 after the pre cat.

96+ S14 the charcoal canister is in the back of the car on the passenger side.

[projectRDM]

How many times do we go over this?

Simple and easy way to know for sure. The CTS. Go look at it.

Red plug with a wire clip - OBD-I
Blue plug that snaps, with no wire to secure it - OBD-II

Additionally, the TPS and front O2 are different as noted.

[Ceepo]

i have a 1995 s14, i beilive its obd1, but i have the obd2 diagnostic port... ehhh.... i confused lol... sucks to hear about your ordeal with the cops...

[projectRDM]

i have a 1995 s14, i beilive its obd1, but i have the obd2 diagnostic port... ehhh.... i confused lol... sucks to hear about your ordeal with the cops...

You haven't read anything on this forum if you're making that statement.

There is no 'OBD-II' diagnostic port. It's an OBD port, period, the plug is the same for both version I and II, for all cars.
The difference between them is protocol and location. If it's beside the hood release handle, it's OBD-II. If it's below the glovebox and near the console, it's OBD-I. The protocol is different as the codes weren't mandated as standard until OBD-II, so for 1995 models it's manufacture specific, while '96+ models it's industry specific.

[Ceepo]

Thank you for clearing that up for me projectRDM, very informative :)