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Emission Test Failed...

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Old Jan 22, 2011 | 10:39 PM
  #31  
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Originally Posted by FlushNFR_S,Jan 22 2011, 10:27 AM
Do you think replacing my O2 sensors will fix the air injection system problem?
no
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Old Jan 22, 2011 | 10:48 PM
  #32  
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Originally Posted by FlushNFR_S,Jan 21 2011, 08:32 PM
How would I fix the air injection system problem?

The emissions test is about 15mins away and my car seems warmed up.

Maybe it wasn't warmed up enough?

I should just replace the O2 sensor first and try again?
One thing to check for is that you still have your ecu fuse in place. One stupid mod that some guys have tried (me included) is to yank that fuse, the idea being that every time you turn the car off it will re set the ecu, when the ecu is re set it runs leaner for a period of time, giving you more response and power. It works, but its stupid. The thought occurred to me that if you are only 15min away from the testing and your fuse is removed, your car hasn't had enough time to learn its proper ecu settings to pass the test before you get there. Also I think they have you turn the car off during the testing process.
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Old Jan 23, 2011 | 01:38 AM
  #33  
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Originally Posted by s2000Junky,Jan 22 2011, 11:48 PM
One thing to check for is that you still have your ecu fuse in place. One stupid mod that some guys have tried (me included) is to yank that fuse, the idea being that every time you turn the car off it will re set the ecu, when the ecu is re set it runs leaner for a period of time, giving you more response and power. It works, but its stupid. The thought occurred to me that if you are only 15min away from the testing and your fuse is removed, your car hasn't had enough time to learn its proper ecu settings to pass the test before you get there. Also I think they have you turn the car off during the testing process.
If that was the case the readiness monitors would not be set
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Old Jan 23, 2011 | 03:09 AM
  #34  
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So I don't know if I get it or not. Either way Im screwed? Since the window is 15-20 miles and I would need to run the car awhile to pass the injection problem and they turn the car off anyways so I would fail right?

It would be nice to pass and just fix this problem later since its not that major to the driving experience.
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Old Jan 23, 2011 | 10:51 AM
  #35  
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Originally Posted by FlushNFR_S,Jan 23 2011, 04:09 AM
So I don't know if I get it or not. Either way Im screwed? Since the window is 15-20 miles and I would need to run the car awhile to pass the injection problem and they turn the car off anyways so I would fail right?
In this scenario only if your ecu fuse is missing. It very well may not be, in which case they can turn the car off and you could still pass. Check your fuse panel under the dash and make sure its there. You will find the fuse diagram on the lid so its easy.

Your check engine light should be coming on when you get one of these faults, I would pull your battery terminals as I mentioned, I would drive the car for a day or two and see if it comes on, if it does you know you have an issue, and you also have just learned how long your window is before the cel gets triggered. If no cel light gets triggered after a few days, go to O'Reilly's and see if there is any faults stored. If not, you may have just needed to re set your ecu and you have no problems.

These are just some suggestions, to help you pinpoint if you actually have an issue and to help you pass emissions if you do. I don't know about you, but I hate spending good money chasing a problem I can't pinpoint. You will spend even more taking it to a shop to trouble shoot.
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Old Jan 23, 2011 | 10:52 AM
  #36  
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Originally Posted by turbo_slug,Jan 23 2011, 02:38 AM
If that was the case the readiness monitors would not be set
In my experience, there is a window between when the ecu has stored the data it needs to pass, but hasn't triggered any faults yet. Like I mentioned, there needs to be multiple repeat of faults (3 I believe) before these are stored.
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Old Jan 23, 2011 | 12:08 PM
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Originally Posted by s2000Junky,Jan 23 2011, 11:52 AM
In my experience, there is a window between when the ecu has stored the data it needs to pass, but hasn't triggered any faults yet. Like I mentioned, there needs to be multiple repeat of faults (3 I believe) before these are stored.

I don't think you understand what I said

In order pass emissions testing, there cant be any stored cel codes (pending or active) and the ecu readiness monitors have to be set.

Readiness monitors are basically for emissions inspections. It tells the inspections guy whether your ecu was reset recently and whether your car is ready to be tested. If the ecu was reset recently , the inspection guy should have mentioned that the readiness monitors were not set yet.
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Old Jan 23, 2011 | 04:20 PM
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Originally Posted by turbo_slug,Jan 23 2011, 01:08 PM

I don't think you understand what I said

In order pass emissions testing, there cant be any stored cel codes (pending or active) and the ecu readiness monitors have to be set.

Readiness monitors are basically for emissions inspections. It tells the inspections guy whether your ecu was reset recently and whether your car is ready to be tested. If the ecu was reset recently , the inspection guy should have mentioned that the readiness monitors were not set yet.
No, I totally understand this, I don't think your understanding what I'm saying. Re read my post above I will repeat, in my experience there is a period in which after the ecu has been re set (in your terminology... the readiness monitors are set) but have not stored the potential faults yet. Getting tested within that window is the goal.
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Old Jan 23, 2011 | 05:11 PM
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Originally Posted by s2000Junky,Jan 23 2011, 05:20 PM
No, I totally understand this, I don't think your understanding what I'm saying. Re read my post above I will repeat, in my experience there is a period in which after the ecu has been re set (in your terminology... the readiness monitors are set) but have not stored the potential faults yet. Getting tested within that window is the goal.
Yes, one could do that but it would be a half ass solution. IMO, fix the problem properly.
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Old Jan 23, 2011 | 06:00 PM
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[QUOTE=turbo_slug,Jan 23 2011, 06:11 PM] Yes, one could do that but it would be a half ass solution.
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