Drive Cycles - OBD2 Emissions Monitor Readiness

Tech discussions on the L77 6.0L V8.
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smwalker
Posts: 1937
Joined: Mon Jul 29, 2013 6:44 am
Location: Azusa,CA

Drive Cycles - OBD2 Emissions Monitor Readiness

Post by smwalker » Fri Apr 12, 2019 11:51 pm

Just for reference here are the drive cycles for our cars. These procedures are useful when you have recently disconnected your battery or cleared OBD2 codes with a scanner and have to get your emissions monitors ready for a state inspection.

Check your state requirements as most of them allow one monitor to be incomplete and still pass. As an example:
Texas - Any 1 monitor can be incomplete
California - Only Evap monitor can be incomplete

Here is 11-17 V8:
Image

Here is 11-17 V6:
Image
Steve Walker
Azusa, CA
'11 PPV 9C3 Huron White

lastcall190
Posts: 567
Joined: Mon Sep 11, 2017 10:17 am
Location: North Jersey

Re: Drive Cycles - OBD2 Emissions Monitor Readiness

Post by lastcall190 » Fri Apr 12, 2019 11:59 pm

Thanks for reference, this seems timely considering a few other current threads.

-J
2012 Caprice
2008 CVPI

Both gone but not forgotten...

CrashTestDummy
Posts: 2138
Joined: Sat Feb 07, 2015 8:31 pm
Location: Pearland, Texas

Re: Drive Cycles - OBD2 Emissions Monitor Readiness

Post by CrashTestDummy » Sat Apr 13, 2019 8:32 pm

Yup! :lol:
Gene Beaird,
Pearland, Texas
2012 Caprice 9C1
1992 B4C 1LE Camaro
2010 Tahoe PPV (her car)
1995 DGGM Impala SS
1996 BBB Impala SS (11-second DD)
1985 Firebird - 310 LS1 C Prepared autocross car.
And some others
Do YOU have my SPID?

MJHughesGT
Posts: 9
Joined: Sat Feb 01, 2020 3:50 am

Re: Drive Cycles - OBD2 Emissions Monitor Readiness

Post by MJHughesGT » Mon Jun 22, 2020 3:55 am

For the v8, is step 5 meant to be driving, or just revving the engine at a constant TPS? Is says to shift to D, but then step 3 also says to put the parking brake on and shift to D, so I'm not sure I trust that. Step 5 is hard to do if you don't live in a flat area with a place that you can go for 2+ minutes without changing TPS at all, unless it should say shift to P and just rev the engine.

Thanks all,
-Mike

smwalker
Posts: 1937
Joined: Mon Jul 29, 2013 6:44 am
Location: Azusa,CA

Re: Drive Cycles - OBD2 Emissions Monitor Readiness

Post by smwalker » Mon Jun 22, 2020 4:00 am

I think it's just staying parked. Because if #8 they specifically say to drive vehicle. Think they would specifically say it if they wanted yo to drive. Don't know though. Quite unclear.
Steve Walker
Azusa, CA
'11 PPV 9C3 Huron White

CrashTestDummy
Posts: 2138
Joined: Sat Feb 07, 2015 8:31 pm
Location: Pearland, Texas

Re: Drive Cycles - OBD2 Emissions Monitor Readiness

Post by CrashTestDummy » Mon Jun 22, 2020 3:25 pm

Since the instructions say to get the engine to a certain RPM, vs. getting the car to a certain MPH, I'd also assume Step 5 is with the car stationary.
Gene Beaird,
Pearland, Texas
2012 Caprice 9C1
1992 B4C 1LE Camaro
2010 Tahoe PPV (her car)
1995 DGGM Impala SS
1996 BBB Impala SS (11-second DD)
1985 Firebird - 310 LS1 C Prepared autocross car.
And some others
Do YOU have my SPID?

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