99pewterZ

iTrader: (1)

For all you edit user I would like to know if you can change the OBDII readiness monitors on/off or to show complete/not available? We have a new emissions test here in Texas and it looks at the readiness monitors and if they are complete then it passes (no more sniffer for 96 up) But if there are more than 2 not completes you automatically fail. So I just wanted to know before I spend the $$$$ if this is possible.
Thanks in advance

Sparky

Good question.

ttt for ya!

Team ZR-1

PCMs since 1996 have had these smog tests running, called I/M 240 ( Inspection/Maintance).
EPA finally said enough state(S) testing was done and mandated all states convert to these tests this year since it cannot be controled by who the test station is ( cheating).

Complete means PASS and incomplete means REJECT and new cars are only allowed 1 function to be in an incomplete state and older PCM models are allowed 2.

EPA tied I/M state to DTCs state, thus if you use a scanner and think you'll fool smog tests by deleting any error codes, the delete function is tied to all IM tests and by deleting DTCs forces ALL tests back to a incomplete state.
Some tests can take as many as 40 VALID drive cycles to get back to a complete state and thus you would not want to delete DTCs a few days before going in for smog testing.

Turning off these tests via ls1EDIT would prevent these tests from ever getting to a complete state, you coud turn off the DTC being flagged to PCM but I would not turn the tests off.

Always use the IM tests to see where the powertain is related to those tests ( If using Ease scanner just click on IM icon and it shows state of all IM functions and will be saved in reports)

Sparky

So if you don't disable the tests, they will show complete but a deleted code would not be caught?

Mark

99pewterZ

iTrader: (1)

John,
Unfortnetly you are way over my head so let me just ask you a question if you are still out there. For example if I install my cam and get the dreaded PO300 code I can just delete the code and the misfire monitor will still show "COMPLETE"
once the test have run? Another question would be from what you said earlier you can just turn off your readiness monitors with LS1 Edit is this correct?(but I don't want to this because it will show incomplete right?) I just want to find out some more info before I put a cam in there that will never let me pass emissions here.

Team ZR-1

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by 99pewterZ:
<strong>John,
Unfortnetly you are way over my head so let me just ask you a question if you are still out there. For example if I install my cam and get the dreaded PO300 code I can just delete the code and the misfire monitor will still show "COMPLETE"
once the test have run? Another question would be from what you said earlier you can just turn off your readiness monitors with LS1 Edit is this correct?(but I don't want to this because it will show incomplete right?) I just want to find out some more info before I put a cam in there that will never let me pass emissions here.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Yes your correct, the test is just that it is testing to see if that circuit itself functions, not if the function sees a problem so its best to keep the tests on so they will function and be in a completed state for the I/M 240 tests only concern is are the tests in a completed state or not and then
if there is any DTCs set thus you can tell PCM not to trigger the DTC or lower its class of failure from lets say a class A to a lower class.

Yes you could turn the tests off but that would cause a reject during testing and also is a good clue to you as how engine is functioning so anytime via your scanner could check their state and know how close the engine is functioning as to smog functions but also how good or bad the engine is runnning.

I have tested all these IM functions for several months now and keep in mind if you reset the PCM, clear DTCs, or reset IM flags some tests take up to 40 valid drive cycles to get to a completed state. Let DTCs age out rather then clearing them all out for at least then your not forcing all IM functions back to a noncomplete (fail) state.

Again if you have a valid PCM scanner it should have a I/M 240 icon you click on and within seconds it does the same tests as a smog station, which also is using a scanner to determine if those tests pass or are rejected.
This way you know before going to testing if the car would pass IM before hand.

Of course if you remove functions like 02s, EGRs, etc then of course there is no way for the tests to get to a completed state.

BTW, a smog station would not do this as a norm but scanner vendors such as Ease sell black boxes that can test the PCM and see if the PCM is correctly doing what EPA requires and this tool could tell if something was turned off or not.
They also sell a black box that you hook up to your scanner to test and find out if your scanner complies to EPA and is doing the IM 240 test reporting correctly.

Your scanner should give you a IM 240 test result ( as the Ease scanners do) report that can be svaed to disk or printed out.
You could do a EPA I/M tests before doing smog station test, print it out so that if the car passed but then failed at smog station you could show them a report and question their results.

Team ZR-1

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Sparky:
<strong>So if you don't disable the tests, they will show complete but a deleted code would not be caught?

Mark</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Yes, your not deleting codes your just telling PCM to ignore the process when a DTC occurs and not trip MIL light on for false cndtions like knock or misfire with a highly modded powertrain.

Some tests run all the time, some are 1 time tests. The tests are only to determine if the functions themselves are working correctly not what they themselves could trigger a DTC.

With my 372 stroker engine with all its mods, all I/M 240 tests are in a completed state.
Due to stroker engine, cam, headers, etc a function like misfires are false such as while at idle and would trigger P0300 DTCs which EPA feels is a threat to the cats. Thus I can have the IM tests functional but can reduce the P0300 class from A to B or tell PCM to ignore P0300s but still do the IM tests.

Best path of course is to tune the calibration to reduce those types of faults assuring those DTCs seldom occur which is what I do.

Chris Johnson 00 T/A

So, let me in a round about way ask, how in the hell can I pass texas emissions with a HUGE cam, etc?

I don't have O2 simms, and Don't have EGR on my 2000. The PCM was done by Ed Wright.

Do we know of a 'black box' that I can plug in to show what it needs to show? I know the inspector, and getting him to do whatever it is I need done, isn't an issue, as long as it passes the scan.

How does it work in Texas, say, if I tell them that I have a 2002 motor in the car, and it doesn't have EGR on it anymore?

And lastly, does anyone 'sell' stickers? <img border="0" title="" alt="[Razz]" src="gr_tounge.gif" />

I'm headed to the Harlingen area, and I doubt they have sniffer tests yet ( Isn't it only Dallas, Houston, Austin, and SA that test? )

If my PCM doesn't pass, I'm still SOL at that point.

Inspection's been out for a year now...

99pewterZ

iTrader: (1)

Chris,
The Houston,El Paso ,Dallas and now all the neighboring counties will be subjected to emmissions tests. It is getting hard, I want to cam my car but worry about the scan test on my 99Z. I'm also an inspector and I'll try to find out about the 02 motor w/o an egr in a later year model. Right now we just look at the emmissons decal on the vehicle and if it says egr,O2,evap and so on that is what it has to have.