Anyone in here have an SR in Illinois and pass emissions?

[EZcheese15]

why not just switch your god damned inside of the ecu to have your LED have be on or off or whatever and while they are checking it, you just hhave it show whatever its supposed to show.

OBDII doesn't show codes like OBDI did. OBDII you can plug into the diagnostic port to get the codes without any LED flashing. You can also get 1st trip DTC's with OBDII, which you can't on OBDI.

[EZcheese15]

Personally if it was my car, I wouldn't even care. Just roll up, they plug in and see "no communication", and will likely just give you the dyno test and pass you anyway. When I had my 99' subaru tested, they just gave it an idle test and that's it. Must be a random thing. And if you fail, oh well, there are other ways of beating the system. My parent's car failed 3 times, then they stopped caring and passed it.

If they see "no communication" it's an automatic fail. Atleast, legally it is. You must have gotten lucky. I know somebody who has failed GA emissions just because the 12V power signal to the diagnostic port was shorted and it didn't pick up a signal to their scan tool.

[TommyyJ]

when i went for emissions testing a few months, this is how they did it, put the car on the dyno wheels etc whatever u wanna call it anyway... turned the car off, plugged in there little cpu..turned the car on, then checked the gas cap...went back to the cpu...checked for codes, and that was it, then pulled the car forward and shut it off...that is the way its done for obdII cars...if an obdII car doesnt pass the cpu test, then u go to the sniffer test...

[CrabSpirits]

Cheese, you are not understanding what is happening. When you turn the car to "on, engine not running", the ecu will simply check that the sensors are there. That is all. Since the sensors really are there and having the correct values, it will not trigger a code.

With my theory, even if the car is running, the KA ecu doesn't know that since the KA CAS is not mounted on the engine and not being turned. As far as it "knows", it is simply on and ready to start the KA.

I think you missed the part of my post that stated that there are 2 ecu/harness/sensor systems here. 1 hooked up and running the engine (SR), and 1 temporarily powered up and hooked to the diag port and hid somewhere to fool emissions (KA).

[SR20DET240]

yeah i checked with my dad (IM240 certified HUMMER technician) and he says all they do is a code check. they also test your service engine soon light to make sure you didn't take the bulb out.

[CrabSpirits]

if an obdII car doesnt pass the cpu test, then u go to the sniffer test...

So you go to the sniffer test and pass. The only thing I will be worried about is high NOx emissions from the lack of an EGR, but I have heard nothing about others here failing because of that.

[EZcheese15]

when i went for emissions testing a few months, this is how they did it, put the car on the dyno wheels etc whatever u wanna call it anyway... turned the car off, plugged in there little cpu..turned the car on, then checked the gas cap...went back to the cpu...checked for codes, and that was it, then pulled the car forward and shut it off...that is the way its done for obdII cars...if an obdII car doesnt pass the cpu test, then u go to the sniffer test...

According to the IL EPA webpage:

Phase 1 from July to October 2002: 1996 and newer vehicles that pass a gas cap pressure test and an OBD test will pass the emissions test. An exhaust test will not be performed when the vehicle passes the OBD test. If the vehicle fails the OBD test, it will be given a second chance to pass by receiving an exhaust test. In this phase, vehicles that fail the emissions test can be repaired to pass either the OBD test or the exhaust test. Phase 2 from October 2002 to January 2004: Owners of 1996 and newer vehicles will be able to decide whether to repair their vehicle if it fails an OBD test, or to be given a second-chance exhaust test. In this phase, vehicles that fail the emissions test can be repaired to pass either the OBD test or the exhaust test. Phase 3 beginning January 1, 2004: The emissions test for most 1996 and newer vehicles will consist of a gas cap pressure test and an OBD test. In this phase, vehicles that fail the OBD test must be repaired to pass the OBD test.

So I guess you are right about having an optional sniffer test (basically if you fail the OBD test). Atleast for now. But starting in 2004 you will have to pass the OBD test. I guess IL is a little behind GA in this right now, because in GA you *have* to pass the OBD test regardless.

[EZcheese15]

Cheese, you are not understanding what is happening. When you turn the car to "on, engine not running", the ecu will simply check that the sensors are there. That is all. Since the sensors really are there and having the correct values, it will not trigger a code.

With my theory, even if the car is running, the KA ecu doesn't know that since the KA CAS is not mounted on the engine and not being turned. As far as it "knows", it is simply on and ready to start the KA.

I think you missed the part of my post that stated that there are 2 ecu/harness/sensor systems here. 1 hooked up and running the engine (SR), and 1 temporarily powered up and hooked to the diag port and hid somewhere to fool emissions (KA).

I understand what you are saying. I'm saying that if you turn the car on and don't have any KA sensors actually hooked up, any moron with half a brain cell is gonna notice the scan tool showing 0 RPMs with the car running and gonna think something's up. And do you realize *how* many sensors you will have to have hooked up? It's an enormous amount.

[CrabSpirits]

But all the sensors would be hooked up. It's not that hard to have all those sensors hooked up. You have:CASTPSEGR position O2CTSFuel Pump Relay?Evap Vent SolenoidAnd a few others....not that big of a deal.

[SR20DET240]

right but you have to do more than connect the sensors.

take the O2 sensor for instance.

the o2 is meant to be in the exhaust gas. having the o2 sensor in fresh air would simulate a really lean exhaust and would tell the computer to richen the fuel. if the o2 doesn't see an improvement after that, it trips a code in the ECM.

without these sensor connected up to what they were meant to detect, most will go out of range and trip a code.

[EZcheese15]

right but you have to do more than connect the sensors.

take the O2 sensor for instance.

the o2 is meant to be in the exhaust gas. having the o2 sensor in fresh air would simulate a really lean exhaust and would tell the computer to richen the fuel. if the o2 doesn't see an improvement after that, it trips a code in the ECM.

without these sensor connected up to what they were meant to detect, most will go out of range and trip a code.

Exactly. That was my point. And there is no "if they don't turn the car on" because they *do* turn the car on.

[bp2ooo]

Do they have obdII in Japan? could you get the same year motor that is supposed to fit in your car? ex you have a 1998 240, so you get a s14 black top, or even an s15 blacktop and put it in? if they had obdII in japan then wouldn't they just plug in, see everything is ok. From what you guys were talking about it would sound very hard to get an obdII car with a swap to pass without lots of time/money spent so if the s15 had obdII it would probbably be worth spending the extra couple of grand and getting a motor with less problems.

Just an idea, i dont know alot about emissons, or onboard diagnostics in japan.

[EZcheese15]

Do they have obdII in Japan? could you get the same year motor that is supposed to fit in your car? ex you have a 1998 240, so you get a s14 black top, or even an s15 blacktop and put it in? if they had obdII in japan then wouldn't they just plug in, see everything is ok. From what you guys were talking about it would sound very hard to get an obdII car with a swap to pass without lots of time/money spent so if the s15 had obdII it would probbably be worth spending the extra couple of grand and getting a motor with less problems.

Just an idea, i dont know alot about emissons, or onboard diagnostics in japan.

OBDII is a standard developed by the EPA in the U.S. only. I will look it up and try to find a link for you to read more about it if anyone is interested.

[bp2ooo]

sorry just thought since it was on board diagnostics it would be useful to have in japan to. My neighbor a gm mechanic loves obd2 cars. Plugs in his comp, tells him whats wrong, fixes it, saves time and effort.

[EZcheese15]

Here's a good article on OBDII history:http://members.aol.com/carleyw...d.htm

JDM cars I'm sure have a similar system to OBDII. However, since OBDII was a standardization regulated by the EPA, it has only been implemented in the U.S., to the best of my knowledge.

[CrabSpirits]

right but you have to do more than connect the sensors.

take the O2 sensor for instance.

the o2 is meant to be in the exhaust gas. having the o2 sensor in fresh air would simulate a really lean exhaust and would tell the computer to richen the fuel. if the o2 doesn't see an improvement after that, it trips a code in the ECM.

without these sensor connected up to what they were meant to detect, most will go out of range and trip a code.

You guys are still not getting the picture. When you turn the key on your car to "on, engine not running" there is no exhaust gas in the exhaust system then, so does your car trip a fault code for the O2 sensor? No, because the O2 sensor does not even become a factor until the ecm is in closed loop mode after the engine has been running for a short time.

[CrabSpirits]

Exactly. That was my point. And there is no "if they don't turn the car on" because they *do* turn the car on.

Of course they turn the car "on". I doubt they have the engine running though, if all they are doing is checking trouble codes.

BTW, I am an ASE Advanced Level Certified tech.

[EZcheese15]

Of course they turn the car "on". I doubt they have the engine running though, if all they are doing is checking trouble codes.

BTW, I am an ASE Advanced Level Certified tech.

The turn the engine on when doing this. Not just the car. I understand what you are saying but I'm just saying I don't think it's feasable.

And if you want to argue credentials, I have a B.S. in Automotive Engineering Technology.

[SR20DET240]

you can check codes by only turning on the ignition. I think cheese is saying that they actually have the car started and the engine running while they check the codes.