OBDII Emissions Test - Mustang Evolution

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Old 07-13-2013, 12:46 PM   #1
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Exclamation OBDII Emissions Test

I live in Oregon now and I guess they do their smog test through the OBDII! Weird, never knew that could work. but anyways.. I had to reset codes on a engine warning and when they went to test the computer didn't have enough info to finish the test. Any Idea how long I should drive to build back the computers memory and should I be driving more conservatively so I have greater chances of passing?
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Old 07-13-2013, 01:56 PM   #2
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Don't floor it all the time. Try to coast it more so you improve your mpg. there is a specific amount of CO2 emitted per gallon of fuel burned so the less full your car uses per year, the smaller your carbon foot print. Then after u pass the test, do whatever the hell u want lol
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Old 07-13-2013, 01:57 PM   #3
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A couple hours is more than enough
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Old 07-13-2013, 01:59 PM   #4
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I've heard it takes about 100 miles
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Old 07-13-2013, 01:59 PM   #5
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Quote:
Originally Posted by Stephen06v6 View Post
I live in Oregon now and I guess they do their smog test through the OBDII! Weird, never knew that could work. but anyways.. I had to reset codes on a engine warning and when they went to test the computer didn't have enough info to finish the test. Any Idea how long I should drive to build back the computers memory and should I be driving more conservatively so I have greater chances of passing?
I recently had the same problem. I had to drive about 30 miles before my computer reset.
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Old 07-13-2013, 02:00 PM   #6
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a few hours seams too little and 100 miles seams too much!
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Old 07-13-2013, 02:07 PM   #7
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Well just drive it for a day and go tomorw
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Old 07-15-2013, 07:10 PM   #8
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Here is a blurb on how to go through the drive cycle for obdll emissions testing:

Vehicle models affected: 1998 and newer.

Some dealers’ vehicles have not been able to complete the new Drive Clean test because the on-board computers were “not ready.” Here’s a short primer on what you need to know to be test-ready.

Drive Clean’s new test reads information on a car’s built-in computer. A “not ready” test result means the computer’s monitors didn’t have the necessary information to complete the test. The fastest way to replace missing information is to take the car through a drive cycle. Here’s a generic drive cycle:

Step 1: Make sure the vehicle has been parked for eight hours without a start.
Step 2: Start the engine and let it idle in Drive for two-and-a-half minutes with the Air Conditioning (A/C) and rear defroster on.
Step 3: Turn the A/C and rear defroster off. Drive the vehicle for 10 minutes at highway speeds.
Step 4: Drive the vehicle for 20 minutes in stop-and-go traffic.
Step 5: Your drive cycle is complete. You can now go in for your test.

Gas tank should be ¼ to ¾ full. Driver should avoid rapid acceleration.

The generic drive cycle works for most vehicles. However, go to aftermarket sources or the vehicle manufacturer for drive cycles for specific vehicles.

Why wasn’t the vehicle ready to take the test?

On the lot for a long time with a dead or disconnected battery.
Recent engine repairs or maintenance that may have stopped battery power.
Weak battery that can barely start the engine and shows voltage dropping during cranking.
Computer codes have been cleared or reset.
You can also do a quick check for readiness before taking the test. Plug a portable scan tool into the vehicle’s diagnostic link connector to see that monitors are ready. If they are not, then the car needs a drive cycle.
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