Illinois emission question
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Safety Car
Joined: Dec 2012
Posts: 3,853
Likes: 1,861
From: St. Louis Metro East IL
The emissions systems take a number of ignition and drive cycles to show ready. Low / no battery voltage resets a number of parameters requiring the ignition / drive cycles to show ready. I had this problem on about 4 parameters after a dead battery.
Did you just change or disconnect something?
Did you just change or disconnect something?
Safety Car
Joined: Dec 2012
Posts: 3,853
Likes: 1,861
From: St. Louis Metro East IL
Emissions testing is required in the Chicago and St. Louis metro east areas:
The Illinois EPA's vehicle emissions inspection program plays an important role in improving air quality and public health in Illinois. The federal Clean Air Act (42 U.S.C. § 7511a) requires vehicle emissions inspection programs in large, urbanized areas that do not meet the National Ambient Air Quality Standards (NAAQS) for ozone. Although Illinois has made significant strides to clean its air, levels of air pollution in the Chicago and Metro-East St. Louis areas still exceed the ozone NAAQS. Additionally, the Illinois Vehicle Emissions Inspection Law of 2005 (625 ILCS 5/13C) requires a vehicle emissions inspection program to reduce air pollution from motor vehicles in these areas of Illinois. For these reasons, the vehicle emissions inspection program is part of Illinois EPA’s strategy to reduce air pollution in Illinois and bring the Chicago and Metro-East areas into attainment of the ozone NAAQS.
The Illinois EPA's vehicle emissions inspection program plays an important role in improving air quality and public health in Illinois. The federal Clean Air Act (42 U.S.C. § 7511a) requires vehicle emissions inspection programs in large, urbanized areas that do not meet the National Ambient Air Quality Standards (NAAQS) for ozone. Although Illinois has made significant strides to clean its air, levels of air pollution in the Chicago and Metro-East St. Louis areas still exceed the ozone NAAQS. Additionally, the Illinois Vehicle Emissions Inspection Law of 2005 (625 ILCS 5/13C) requires a vehicle emissions inspection program to reduce air pollution from motor vehicles in these areas of Illinois. For these reasons, the vehicle emissions inspection program is part of Illinois EPA’s strategy to reduce air pollution in Illinois and bring the Chicago and Metro-East areas into attainment of the ozone NAAQS.
Le Mans Master
Joined: Nov 2001
Posts: 6,719
Likes: 65
From: Illinois
Emissions testing is required in the Chicago and St. Louis metro east areas:
The Illinois EPA's vehicle emissions inspection program plays an important role in improving air quality and public health in Illinois. The federal Clean Air Act (42 U.S.C. § 7511a) requires vehicle emissions inspection programs in large, urbanized areas that do not meet the National Ambient Air Quality Standards (NAAQS) for ozone. Although Illinois has made significant strides to clean its air, levels of air pollution in the Chicago and Metro-East St. Louis areas still exceed the ozone NAAQS. Additionally, the Illinois Vehicle Emissions Inspection Law of 2005 (625 ILCS 5/13C) requires a vehicle emissions inspection program to reduce air pollution from motor vehicles in these areas of Illinois. For these reasons, the vehicle emissions inspection program is part of Illinois EPA’s strategy to reduce air pollution in Illinois and bring the Chicago and Metro-East areas into attainment of the ozone NAAQS.
The Illinois EPA's vehicle emissions inspection program plays an important role in improving air quality and public health in Illinois. The federal Clean Air Act (42 U.S.C. § 7511a) requires vehicle emissions inspection programs in large, urbanized areas that do not meet the National Ambient Air Quality Standards (NAAQS) for ozone. Although Illinois has made significant strides to clean its air, levels of air pollution in the Chicago and Metro-East St. Louis areas still exceed the ozone NAAQS. Additionally, the Illinois Vehicle Emissions Inspection Law of 2005 (625 ILCS 5/13C) requires a vehicle emissions inspection program to reduce air pollution from motor vehicles in these areas of Illinois. For these reasons, the vehicle emissions inspection program is part of Illinois EPA’s strategy to reduce air pollution in Illinois and bring the Chicago and Metro-East areas into attainment of the ozone NAAQS.
Advanced
Joined: Dec 2017
Posts: 54
Likes: 4
I pulled this off of Modern Camaro page. If so what a pita. I’m having the same issue as OP but a Camaro. My vette hasn’t hadn’t to be tested yet.
Performing a GM OBD-II Driving cycle:
Cold Start In order to be classified as a cold start the engine coolant temperature must be below 122 degrees F (50 C) and within 11 degrees F (6 C) of the ambient air temperature at startup. Do not leave the key on prior to the cold start or the heated oxygen sensordiagnostic 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 55mph (88km/hr) is reached. During this time the Misfire, Fuel Trim, and Purge Flow diagnostics will be performed.
Hold Steady Speed Hold a steady speed of 55mph (88km/hr) 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 20 mph (32km/hr). During this time the EGR, Purge and Fuel Trim diagnostics will be performed.
Accelerate Accelerate at 3/4 throttle until 55-60mph (88-96 km/hr). This will perform the same diagnostics as in step 3.
Hold Steady Speed Hold a steady speed of 55mph (88km/hr) 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.DecelerateThis will perform the same diagnostics as in step 5. Again, don't press the clutch or brakes or shift gears.
Performing a GM OBD-II Driving cycle:
Cold Start In order to be classified as a cold start the engine coolant temperature must be below 122 degrees F (50 C) and within 11 degrees F (6 C) of the ambient air temperature at startup. Do not leave the key on prior to the cold start or the heated oxygen sensordiagnostic 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 55mph (88km/hr) is reached. During this time the Misfire, Fuel Trim, and Purge Flow diagnostics will be performed.
Hold Steady Speed Hold a steady speed of 55mph (88km/hr) 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 20 mph (32km/hr). During this time the EGR, Purge and Fuel Trim diagnostics will be performed.
Accelerate Accelerate at 3/4 throttle until 55-60mph (88-96 km/hr). This will perform the same diagnostics as in step 3.
Hold Steady Speed Hold a steady speed of 55mph (88km/hr) 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.DecelerateThis will perform the same diagnostics as in step 5. Again, don't press the clutch or brakes or shift gears.
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Safety Car
Joined: Dec 2012
Posts: 3,853
Likes: 1,861
From: St. Louis Metro East IL
Jayz - just drive for a few days. That's what I had to do with my Trailblazer. I monitored the parameters with a bluetooth modem plugged into the ODBII port and Torque Light on my phone and retested when all parameters showed ready.