3800 Emissions Readiness Talk

[Yaj Yak]

3800 emissions readiness discussion and go.

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[boostedguy05]

also just thinking about it, what you want to do i don't think will "fix" your issue.

i think your problem is elsewhere, are you running an IAT sensor? what's your setup?

unles it is different from his sig,

02 Monte SS, Top Swapped L26, Ported Blower/Intake, VS Cam, 90#, Headers, 3.1", 55# Injectors, SSIC, Custom Tune

 

[Yaj Yak]

unles it is different from his sig,

02 Monte SS, Top Swapped L26, Ported Blower/Intake, VS Cam, 90#, Headers, 3.1", 55# Injectors, SSIC, Custom Tune

apparently this is for his other car

 

[10sec]

also just thinking about it, what you want to do i don't think will "fix" your issue.

i think your problem is elsewhere, are you running an IAT sensor? what's your setup?

Changing it to "not supported" will pass emissions. But I didn't say that...

 

[Yaj Yak]

Changing it to "not supported" will pass emissions. But I didn't say that...

i know, but he said he wasn't passing because the test wasn't running.

on my gtp, while i was running without an intake air temp sensor, the cold start test wouldn't run, because the intake temp was never within 11* of ambient

To perform an OBDII Driving cycle do the following:

Cold Start. In order to be classified as a cold start the engine coolant temperature must be below 50°C (122°F) and within 6°C (11°F) of the ambient air temperature at startup. Do not leave the key on prior to the cold start or the heated oxygen sensor diagnostic may not run.
Idle. The engine must be run for two and a half minutes with the air conditioner on and rear defroster on. The more electrical load you can apply the better. This will test the O2 heater, Passive Air, Purge "No Flow", Misfire and if closed loop is achieved, Fuel Trim.
Accelerate. Turn off the air conditioner and all the other loads and apply half throttle until 88km/hr (55mph) is reached. During this time the Misfire, Fuel Trim, and Purge Flow diagnostics will be performed.
Hold Steady Speed. Hold a steady speed of 88km/hr (55mph) for 3 minutes. During this time the O2 response, air Intrusive, EGR, Purge, Misfire, and Fuel Trim diagnostics will be performed.
Decelerate. Let off the accelerator pedal. Do not shift, touch the brake or clutch. It is important to let the vehicle coast along gradually slowing down to 32km/hr (20 mph). During this time the EGR, Purge and Fuel Trim diagnostics will be performed.
Accelerate. Accelerate at 3/4 throttle until 88-96 km/hr (55-60mph). This will perform the same diagnostics as in step 3.
Hold Steady Speed. Hold a steady speed of 88km/hr (55mph) for five minutes. During this time, in addition to the diagnostics performed in step 4, the catalyst monitor diagnostics will be performed. If the catalyst is marginal or the battery has been disconnected, it may take 5 complete driving cycles to determine the state of the catalyst.
Decelerate. This will perform the same diagnostics as in step 5. Again, don't press the clutch or brakes or shift gears.

 

[10sec]

The thing is, if you shut all of those off so the computer isn't looking for them, voila, all monitors are OK.

 

[Yaj Yak]

The thing is, if you shut all of those off so the computer isn't looking for them, voila, all monitors are OK.

yes but the test hasn't run yet.

 

[10sec]

I don't get the point you're making?

If you run off the sensor in the computer there are no tests. It's gone, computer doesn't have the word "catalyst" in it anymore. Then in turn you will pass emissions.

 

[Yaj Yak]

I don't get the point you're making?

If you run off the sensor in the computer there are no tests. It's gone, computer doesn't have the word "catalyst" in it anymore. Then in turn you will pass emissions.

you need the 3/5 readiness monitors to say "complete" to pass emissions.

 

[PANDA]

My GTP had no EGR, no evap, no rear o2, no nothing.

Passed emissions flawlessly. right click > no reporting.

 

[Yaj Yak]

My GTP had no EGR, no evap, no rear o2, no nothing.

Passed emissions flawlessly. right click > no reporting.

yep. all those tests were being run still and the readiness monitors were green and good to go.

 

[Euro]

^^Yep. Pretty sure that's what TG did to my heap as well, it's been a few years now though

 

[greasy]

Changing it to "not supported" will pass emissions. But I didn't say that...

Depends......

When I took my Cobra in for emissions everything except for like 3 things said "Not Supported" and they failed me. :lmao:

 

[greasy]

Not sure if the same applies from Fords to GM's.....

 

[02BlueGT]

Not sure if the same applies from Fords to GM's.....

IIRC It doesn't as of like 2 years ago, the IEPA changed the software and it snagged all the ford's that were set this way. The gm computer is coded differently, so it still works. Best way is to set all tests to not reporting, then also go into the individual error codes and set them as no error reported. Some people have issues with a code being set and the IEPA fails you due to the code, not the readiness monitor, also the code can trigger a readiness monitor to set as not ready.

 

[GTPpower]

Man it must suck to have emmision testing.

 

[gojo83]

Man it must suck to have emmision testing.

ya whats everyone bitching about isnt everyone "allergic" to cats lol