urgent help needed with state emissions issue

[1Marauder]

^^^what they all said^^^

I don't know about IL, but in MA you can have one I/M monitor not ready as long as it isn't the catalyst, but having those say "unsupported" is a :nono:. Either get the O2 and catalyst monitors turned back on, or get a stock tune, and you'll be golden.

AND dont forget, you need to drive around foir a while (each car is different...) I suggest turning car on and off a few times, 20 minutes freeway, fill the gas tank again (open tank / close tank) a few times... and generally let the car "reset".

And a general excuse to ROMP on it a few times

 

[chief455]

AND dont forget, you need to drive around foir a while (each car is different...) I suggest turning car on and off a few times, 20 minutes freeway, fill the gas tank again (open tank / close tank) a few times... and generally let the car "reset".

And a general excuse to ROMP on it a few times

I opted to buy an OBD tool that shows emmissions readiness. Plug it in, leave it on the drive cycle screen, and see when the monitors set. it only takes a 30 minute ride starting with ~ 1/2 tank of gas if you do a few stop lights and a stretch of highway.
Benefit is, the tool data logs, fits a zillion cars, clears MIL lights, and has tons of data vs the SCT data logging.
Worth it if you have other OBD11 cars that might need diagnosis. ~$135.

 

[EMAS]

AND dont forget, you need to drive around foir a while (each car is different...) I suggest turning car on and off a few times, 20 minutes freeway, fill the gas tank again (open tank / close tank) a few times... and generally let the car "reset".

And a general excuse to ROMP on it a few times

Do not fill the gas tank when trying to complete a drive cycle, most cars will not run the EVAP test with a full tank. You should also not do WOT as that is not a part of the monitoring and if a miss is going to occur WOT is the most likely time it will happen.

I opted to buy an OBD tool that shows emmissions readiness. Plug it in, leave it on the drive cycle screen, and see when the monitors set. it only takes a 30 minute ride starting with ~ 1/2 tank of gas if you do a few stop lights and a stretch of highway.
Benefit is, the tool data logs, fits a zillion cars, clears MIL lights, and has tons of data vs the SCT data logging.
Worth it if you have other OBD11 cars that might need diagnosis. ~$135.

Yup, if you follow the specific drive cycle, and even if you don't but drive in a reasonable manner in varried conditions you should be able to get it to complete all monitors in 15-30 minutes provided you do not have a full or empty tank of gas and the ambient temps are not excessively high or low.