Emissions tests with aftermarket parts?
#1694531
11/04/14 10:18 PM
11/04/14 10:18 PM
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Joined: Nov 2003
Posts: 10,384 Upstate NY
Bigcube
OP
I Live Here
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OP
I Live Here
Joined: Nov 2003
Posts: 10,384
Upstate NY
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Bought a Jeep SRT8 that won't pass inspection because of "not ready" indicators from the PCM when hooked up at the inspection station.
The tests that are not complete are O2 sensor tests and catalyst tests. The PCM was checked and verified to be correct at the Dodge dealer on Monday. Will things like a Gibson exhaust and a cold air intake prevent those tests from completing? There is no check engine light on, but it has a new battery so the PCM has obviously been cleared.
I paid for it but the dealer can't complete the transfer until it's inspected. He's put over 700 miles on it since he got it, I figure if it's not complete, it's never going to be. What are the options at this point?
Jim
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Re: Emissions tests with aftermarket parts?
[Re: Bigcube]
#1694532
11/04/14 10:51 PM
11/04/14 10:51 PM
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Joined: Jan 2011
Posts: 4,785 Utah and Alaska
astjp2
master
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master
Joined: Jan 2011
Posts: 4,785
Utah and Alaska
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Sounds like something is either leaking or not hooked up right. Most cat back and CAI's are CARB legal and they have the toughest requirments in the country to get aftermarket approval. Tim
1941 Taylorcraft 1968 Charger 1994 Wrangler 1998 Wrangler 2008 Kia Rio 2017 Jetta
I didn't do 4 years and 9 months of Graduate School to be called Mister!
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Re: Emissions tests with aftermarket parts?
[Re: Bigcube]
#1694535
11/04/14 11:32 PM
11/04/14 11:32 PM
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Joined: Jan 2005
Posts: 12,419 Kalispell Mt.
HotRodDave
I Live Here
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I Live Here
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Posts: 12,419
Kalispell Mt.
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OBD II MONITOR RUN PROCESS
The following procedure has been established to assist Chrysler Dealer Technicians in the field with enabling and running OBD II Monitors. The order listed in the following procedure is intended to allow the technician to effectively complete each monitor and to set the CARB Readiness Status in the least time possible.
NOTE: Once the monitor run process has begun, do not turn off the ignition. By turning the ignition key off, monitor enabling conditions will be lost. NVLD Monitor runs after key off. By performing a Battery Disconnect, or Selecting Erase DTCs, the CARB Readiness and all additional OBD II information will be cleared.
Monitor Preliminary Checks:
1. Plug a scan tool into the vehicle's Data Link Connector (DLC). 2. Turn the ignition, KEY ON - ENGINE OFF. Watch for MIL lamp illumination during the bulb check. MIL lamp must have illuminated, if not, repair MIL lamp. 3. Using a scan tool check for Powertrain related DTCs. - Verify that No Emissions Related DTCs are Present. - * If an Emissions DTC is Present, the OBD II Monitors may not run and the CARB Readiness will not update. - The Emissions related DTC, will need to be repaired, then cleared. By clearing DTCs, the OBD Monitors will need to be run and completed to set the CARB Readiness Status.
Using the scan tool check the CARB Readiness Status.
Do all the CARB Readiness Status Locations read YES?.
- *YES, then all monitors have been completed and this vehicle is ready to be I/M or Emission Tested. - *NO, then the following procedure needs to be followed to run/complete all available monitors.
NOTE: Only the monitors, which are not YES in the CARB Readiness Status, need to be completed. Specific criteria need to be met for each monitor. The most efficient order to run the monitors has been outlined below, including suggestions to aid the process.
Evaporative Emission System Leak Detection with Purge Monitor
This monitor requires a cool down cycle, usually an overnight soak for at least 8 hours without the engine running. The ambient temperature must decrease overnight - parking the vehicle outside is advised. To run this test the fuel level must be between 15-85% full. For the monitor run conditions select the EVAP MON PRE-TEST in the scan tool, OBD II Monitors Menu. The Purge monitor will run if the small leak test reports a pass. Criteria for EVAP monitor:
- Engine off time greater than @ one hour. - Fuel Level between 15% and 85 %. - Start Up ECT and IAT within 10° C (18° F). - Vehicle started and run until Purge Monitor reports a result.
NOTE: If the vehicle does not report a result and the conditions where correct. It may take up to two weeks to fail the small leak monitor. DO NOT use this test to attempt to determine a fault. Use the appropriate service information procedure for finding a small leak. If there are no faults and the conditions are correct this test will run and report a pass. Note the Small leak test can find leaks less than 10 thousands of an inch. If a small leak is present it takes approximately one week of normal driving to report a failure.
Catalyst / O2 Monitor
With NGC, Catalyst and O2 Monitor information are acquired and processed at the same time. Most vehicles will need to be driven at highway speed (< 50 mph) for a few minutes. Some vehicles run the monitor at idle in drive. If the vehicle is equipped with a manual transmission, using 4th gear may assist in meeting the monitor running criteria. For the monitor run conditions, select the BANK 1 CAT MON PRE-TEST in the scan tool, OBD II Monitors Menu.
EGR Monitor
The EGR monitor now runs in a closed throttle decel or at idle on a warm vehicle. However, it is necessary to maintain the TPS, Map and RPM ranges to allow the monitor to complete itself. For the monitor run conditions, select the EGR PRE-TEST in the scan tool, OBD II Monitors Menu.
O2 Sensor Heater Monitor
This monitor is now continuously running once the heaters are energized. Pass information will be processed at power down. For the monitor run conditions, select the O2S HEATER MON PRE-TEST in the scan tool, OBD II Monitors Menu.
Mis-Fire Monitor
The NGC Misfire Monitor is a continuous two-trip monitor. The monitor uses two different tests/counters:
NOTE: The Adaptive Numerator must be learned before the PCM will run the Mis-Fire Monitor. The PCM updates the Adaptive Numerator at every key-ON, and is relearned after battery disconnect. The Misfire Monitor will not run until the Adaptive Numerator has updated since the last battery disconnect. If the Adaptive Numerator is equal to the default value then the PCM knows that the Adaptive Numerator has not been learned and does not permit the Misfire Monitor to run. If the Adaptive Numerator exceeds a calibrated percentage, the PCM sets a DTC for CKP NOT LEARNED and illuminates the MIL.
- 200 Revolution Counter - Looks for misfire that can cause immediate catalyst damage. - 1000 Revolution Counter - Looks for misfire that can cause emissions to increase 1.5 times the Federal Test Procedure (FTP) standards. This test must also identify misfire percentages that might cause a "durability demonstration vehicle" to fail an Inspection and Maintenance Program tailpipe emissions test.
Might take a while, this info is for an 09, what year is yours? They change the criteria about every year, sometimes you got to let it warm up and cool down a certain number of times or cruise at a certain speed or minimum TPS or MAP reading. Tell me what year you are getting. You could set the cruise and drive 700 miles and never get them set without following the set parameters it is looking for.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: Emissions tests with aftermarket parts?
[Re: Bigcube]
#1694537
11/04/14 11:51 PM
11/04/14 11:51 PM
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Joined: Jul 2004
Posts: 1,770 Pa
Wv68charger
top fuel
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top fuel
Joined: Jul 2004
Posts: 1,770
Pa
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Quote:
That's good to know. Some good friends that are up on the new stuff are saying just drive it, takes time. As a software engineer, it seems very odd to me that an ECU would need more than 800 miles to "reset".
My days at the dealership Mopars were the worst when it came to emissions inspections if they had a code took forever for them to pass. Like your friends said just keep driving.
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Re: Emissions tests with aftermarket parts?
[Re: Wv68charger]
#1694539
11/05/14 12:10 AM
11/05/14 12:10 AM
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Joined: Jan 2003
Posts: 1,030 JAX FLA
Curt
super stock
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super stock
Joined: Jan 2003
Posts: 1,030
JAX FLA
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Only suggestion I have is for the cat efficiency test. The pcm will drive the fuel system purposely lean or rich to compare the upstream and downstream wave pattern of the O2 sensors to make sure they do NOT match. Usually this will occur after a specified time under a steady throttle position. You will not feel it but it will happen. I would suggest getting in a level highway (if available) and setting the cruise control. If accel or decel is called for (outside an allowable parameter) the test will not run. I also dont know if have a scanner plugged in alters this at all. I would (here) get on I-95 set the cruise and drive for 30 miles. Exit the highway, shut car off wait 30 seconds (a little excessive I know, but what i would do) restart car and return on the same road. Good luck Curt
Oh yeah...THAT'S gonna leave a mark!
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Re: Emissions tests with aftermarket parts?
[Re: Curt]
#1694541
11/05/14 12:15 AM
11/05/14 12:15 AM
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Joined: Nov 2003
Posts: 10,384 Upstate NY
Bigcube
OP
I Live Here
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OP
I Live Here
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Posts: 10,384
Upstate NY
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Quote:
Only suggestion I have is for the cat efficiency test. The pcm will drive the fuel system purposely lean or rich to compare the upstream and downstream wave pattern of the O2 sensors to make sure they do NOT match. Usually this will occur after a specified time under a steady throttle position. You will not feel it but it will happen. I would suggest getting in a level highway (if available) and setting the cruise control. If accel or decel is called for (outside an allowable parameter) the test will not run. I also dont know if have a scanner plugged in alters this at all. I would (here) get on I-95 set the cruise and drive for 30 miles. Exit the highway, shut car off wait 30 seconds (a little excessive I know, but what i would do) restart car and return on the same road. Good luck Curt
I need to get it back to him tomorrow night, I'll jump on the highway and set the cruise and see what happens. It's about 15 miles.
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Re: Emissions tests with aftermarket parts?
[Re: Bigcube]
#1694542
11/05/14 11:51 PM
11/05/14 11:51 PM
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Joined: Jan 2005
Posts: 12,419 Kalispell Mt.
HotRodDave
I Live Here
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I Live Here
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
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Catalyst / O2 Monitor
With NGC, Catalyst and O2 Monitor information are acquired and processed at the same time. Most vehicles will need to be driven at highway speed (less then 50 mph) for a few minutes. Some vehicles run the monitor at idle in drive. If the vehicle is equipped with a manual transmission, using 4th gear may assist in meeting the monitor running criteria. For the monitor run conditions, select the BANK 1 CAT MON PRE-TEST in the scan tool, OBD II Monitors Menu.
This is about all I can come up with, if I had your car here I could plug it in and my scanner would tell me exactly how I need to drive it to get it set.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: Emissions tests with aftermarket parts?
[Re: Bigcube]
#1694544
11/06/14 12:55 AM
11/06/14 12:55 AM
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Joined: Jan 2003
Posts: 8,171 Plymouth, MI
Blusmbl
master
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master
Joined: Jan 2003
Posts: 8,171
Plymouth, MI
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A lot of aftermarket tuners shut off things like the catalyst monitor and fuel monitors. If they are just shut off they won't report any codes, but now many states have caught on to it and check for OBD2 readiness, instead of just scanning for codes.
I would definitely have them check again to see if the PCM has the stock calibration on it. If not step 1 is to go back to stock.
'18 Ford Raptor, random motorcycles, 1968 Plymouth Fury III - 11.37 @ 118
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Re: Emissions tests with aftermarket parts?
[Re: Bigcube]
#1694546
11/07/14 12:24 AM
11/07/14 12:24 AM
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Joined: Jan 2003
Posts: 1,030 JAX FLA
Curt
super stock
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super stock
Joined: Jan 2003
Posts: 1,030
JAX FLA
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Outstanding....Enjoy!! Curt
Oh yeah...THAT'S gonna leave a mark!
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