Emissions test

[DWSTANG67]

I did search and found alot of good information on why i failed my emmisions test.

one question i do have is why does it read unsupported ? not failed

as for obd connecter and communications that passed, engine light passed bulb check passed fuel system passed comprehensive component passed but everything else was unsupported

I am running the lido tune i had the tune installed last time and passed but not this time.

The other think is i was in dmv getting my registration than drove around the building and took the test so

Would this be not enough time driving for the computer to be ready for test ?

[Ken]

Ohio emissions test... is if you're not throwing a check engine code, you'll pass, no problem...

My Lidio tune was fine, My Kooks Headers and Exhaust have never been a problem, and they've been on for six years next month.

So my advice is check if you are throeing a check engine code...

Ken

[2vmodular]

when queried, obd2 monitors can respond with ready, not ready, or not supported. to pass a state's obd2 test, you need to have a certain number of monitors in a "ready" status.

your custom tune appears to put the pcm in a mode where obd2 diagnostic checks are disabled. you will need to remove this tune to pass your states emissions smog check. if the car is relatively stock, this should be easy. if you've made big modifications, then you will need to contact someone to write you another custom tune that leaves all the required obd2 monitors turned on.

you'll want to move on this project soon because many states have linked their car inspection station data to their car registration data. if you don't get your car to sucessfully pass the smog inspection in a timely manner, then your registration is automatically suspended.

have you read through ford's obd2 implementation guide?

http://www.p71interceptor.com/obd2guides/obdsm307.pdf


I did search and found alot of good information on why i failed my emmisions test.

one question i do have is why does it read unsupported ? not failed

as for obd connecter and communications that passed, engine light passed bulb check passed fuel system passed comprehensive component passed but everything else was unsupported

I am running the lido tune i had the tune installed last time and passed but not this time.

The other think is i was in dmv getting my registration than drove around the building and took the test so

Would this be not enough time driving for the computer to be ready for test ?

[2vmodular]

DWSTANG67's marauder appears to be in a mode intended for offroad vehicles and vehicles intended for export to the gulf cooperation council (gcc) countires. the check engine light will illuminate during the initial key-on bulb check. but you'll never see it turn on for any other reason.

if you're in a state without smog checks, then this might not be a big problem. you'd never get a check engine light over things like evaporative emissions sensor failures or catalytic converter below efficency stuff. but it can also make it very difficult to diagnose stuff that you do care about like an engine misfire.

massachusetts used to be like ohio in terms of obd2 smog checks. as long as the check engine light wasn't illuminated, you'd pass inspection. but within the past year, they started insisting that a set list of obd2 monitors must be ready to pass. this caused some modified cars that used to pass inspection to now fail inspection.


Ohio emissions test... is if you're not throwing a check engine code, you'll pass, no problem...

My Lidio tune was fine, My Kooks Headers and Exhaust have never been a problem, and they've been on for six years next month.

So my advice is check if you are throeing a check engine code...

[RF Overlord]

you'll want to move on this project soon because many states have linked their car inspection station data to their car registration data. if you don't get your car to sucessfully pass the smog inspection in a timely manner, then your registration is automatically suspended.MA does this now.


massachusetts used to be like ohio in terms of obd2 smog checks. as long as the check engine light wasn't illuminated, you'd pass inspection. but within the past year, they started insisting that a set list of obd2 monitors must be ready to pass. this caused some modified cars that used to pass inspection to now fail inspection.This is exactly what happened to Phoebe this time. Passed last year NP...this time I had to reinstall the stock tune. At least now I know this in advance for next year...

[rayjay]

Yep similiar happened to me last two years here in NYS. I have to detune and drive for 150-175 miles to reset everything. This time only 4 out of 5 reset. :confused: but, she passed. FWIW, the tune also changed the VIN on my computer causing a visit from a DMV Investigator last year. :rolleyes:

[burt ragio]

Not sure I realy understand what goes on at inspection time here in Ma. OBD pass fail supported unsupported allowed some ect. Had a challenge last year & had to reload stock tune to pass. When the eaton conversion is installed & I do plan on installing the EGR. My secondary cats have been deleted. In getting the car tunned at a dyno shop what spicificly do I need to ask for so it can pass inspection ?

[RF Overlord]

burt, until this year, all the state's equipment did was look for a MIL being commanded on. If it wasn't, you passed. Now, apparently, they're looking for the I/M Readiness monitors to actually BE there and saying "ready" or "complete". There are 11 monitors in all and I believe the MM supports 7 of them. In MA we are allowed to have one monitor not ready or "inc(omplete)".

As far as your new tune, you should ask your tuner to make one that enables all the proper monitors, at least for yearly inspection use. Whatever he does for the rest of the year is (insert emoticon for "don't ask/don't tell" here).

[2vmodular]

here's an excerpt from my car's mass smog inspection in 2010:

http://www.p71interceptor.com/misc/smoginspection/2010monitors-vi.jpg

last year in 2009, i got this report from the inspection station:

http://www.p71interceptor.com/misc/smoginspection/2009monitors-vi.jpg

but these cars never supported the catalyst heater monitor, secondary air monitor, or a/c system monitor. so it appears that the state wasn't checking obd2 monitor status at all on some cars and just passing them as long as the mil wasn't commanded on.

[2vmodular]

fyi: these cars only check the efficency of the front catalytic converters. they do not have the hardware installed to check the efficency of the rear cat converters. if you look under your car, the o2 sensor in front of the primary first cat is for controlling engine air/fuel mixture. the one after the first cat is for monitoring cat converter efficency. take note of how there are no sensors in the exhaust after the secondary cats.

[RF Overlord]

That's very interesting...my passing report showed the exact same states as yours, include the Evap Monitor Not Ready, which is confirmed by my Actron code scanner. What does it take to get the Evap system ready?

[2vmodular]

a complete list of entry conditions required for the evap monitor to run is listed in this document:

http://www.p71interceptor.com/obd2guides/obdsm307.pdf

this is one hard monitor to get to run. ambient temperature must be within a certain range, the car must have been sitting with the engine turned off for a certain period of time, gas tank fuel fill level must not be too high or too low, you must drive the car within a certain engine load, etc.

fortunately, the state of mass allows up to one obd2 monitor to be in a not ready state for the 2001+ cars. and two monitors to be not ready on the 1996-2000 cars.

[2vmodular]

the evaporative emissions monitor not running can actually be a good thing on older cars. you generally will not notice any driveability problems from a small evap leak. but you will fail your state's smog check if the evap monitor runs and detects a leak.