evap and catalyst "not ready" help.
evap and catalyst "not ready" help.
Okay, so I totally revised my dtc's and anything related to catalyst/catalytic convert or evap in the tune as well, the CEL are all set to stock now because I need to past emissions, for some reason no matter how much I drive around, give it gas ect. these test will not run. I need to get my registration this month because it expires. I think illinois allows you 1 'not ready' monitor.
when are these monitors suppose to run?
what about the p0068 test above rpm? I thought that was just TB correlation related but I have that set to 8000rpm/.
when are these monitors suppose to run?
what about the p0068 test above rpm? I thought that was just TB correlation related but I have that set to 8000rpm/.
yep catalyst test is enabled, open loop? I'm confused open loop is when you just start your car right? Also every time I'm looking at my log my B2 short fuel trims and long fuel trims (both in bank 2) are -100 idk if that has to do with anything but it has been like that for awhile, I just put in a new B2 O2 sensor too.
K u have no bank two all u have is bank one and sensor one or two. Also u can make sure car go into closed loop or keep it in open loop. Usually when tuning. U set the stft to come on but not ltft so u can actually tune it without ure car saving info in the ecm.. So yeah.
If the closed loop setting are stock. Is ure cat fuel adder tables stock. Cuz if it is then u should be a good to go cuz our cars dont have a v series engine so it dont have two banks...... Yes im on my phone lol damnit.
yep, COT and all that is back to stock. Maybe I'll let it cool down and start it up again, because it was still around 120F when I changed everything back to stock. cat light off, thresholds, everything was switched back. thanks.
as for your issues:
GENERAL MOTORS OBD II "Drive Cycle"
Most OBD II ("On-Board Diagnostics II") diagnostic monitors will run at some time during normal operation of the vehicle. A complete driving cycle should perform diagnostics on all systems. A complete driving cycle can be done in under fifteen minutes.
To perform an OBDII Driving cycle do the following:
1. Cold Start. In order to be classified as a cold start the engine coolant temperature must be below 50°C (122°F) and within 6°C (11°F) of the ambient air temperature at startup. Do not leave the key on prior to the cold start or the heated oxygen sensor diagnostic may not run.
2. Idle. The engine must be run for two and a half minutes with the air conditioner on and rear defroster on. The more electrical load you can apply the better. This will test the O2 heater, Passive Air, Purge "No Flow", Misfire and if closed loop is achieved, Fuel Trim.
3. Accelerate. Turn off the air conditioner and all the other loads and apply half throttle until 88km/hr (55mph) is reached. During this time the Misfire, Fuel Trim, and Purge Flow diagnostics will be performed.
4. Hold Steady Speed. Hold a steady speed of 88km/hr (55mph) for 3 minutes. During this time the O2 response, air Intrusive, EGR, Purge, Misfire, and Fuel Trim diagnostics will be performed.
5. Decelerate. Let off the accelerator pedal. Do not shift, touch the brake or clutch. It is important to let the vehicle coast along gradually slowing down to 32km/hr (20 mph). During this time the EGR, Purge and Fuel Trim diagnostics will be performed.
6. Accelerate. Accelerate at 3/4 throttle until 88-96 km/hr (55-60mph). This will perform the same diagnostics as in step 3.
7. Hold Steady Speed. Hold a steady speed of 88km/hr (55mph) for five minutes. During this time, in addition to the diagnostics performed in step 4, the catalyst monitor diagnostics will be performed. If the catalyst is marginal or the battery has been disconnected, it may take 5 complete driving cycles to determine the state of the catalyst.
8. Decelerate. This will perform the same diagnostics as in step 5. Again, don't press the clutch or brakes or shift gears.
Most OBD II ("On-Board Diagnostics II") diagnostic monitors will run at some time during normal operation of the vehicle. A complete driving cycle should perform diagnostics on all systems. A complete driving cycle can be done in under fifteen minutes.
To perform an OBDII Driving cycle do the following:
1. Cold Start. In order to be classified as a cold start the engine coolant temperature must be below 50°C (122°F) and within 6°C (11°F) of the ambient air temperature at startup. Do not leave the key on prior to the cold start or the heated oxygen sensor diagnostic may not run.
2. Idle. The engine must be run for two and a half minutes with the air conditioner on and rear defroster on. The more electrical load you can apply the better. This will test the O2 heater, Passive Air, Purge "No Flow", Misfire and if closed loop is achieved, Fuel Trim.
3. Accelerate. Turn off the air conditioner and all the other loads and apply half throttle until 88km/hr (55mph) is reached. During this time the Misfire, Fuel Trim, and Purge Flow diagnostics will be performed.
4. Hold Steady Speed. Hold a steady speed of 88km/hr (55mph) for 3 minutes. During this time the O2 response, air Intrusive, EGR, Purge, Misfire, and Fuel Trim diagnostics will be performed.
5. Decelerate. Let off the accelerator pedal. Do not shift, touch the brake or clutch. It is important to let the vehicle coast along gradually slowing down to 32km/hr (20 mph). During this time the EGR, Purge and Fuel Trim diagnostics will be performed.
6. Accelerate. Accelerate at 3/4 throttle until 88-96 km/hr (55-60mph). This will perform the same diagnostics as in step 3.
7. Hold Steady Speed. Hold a steady speed of 88km/hr (55mph) for five minutes. During this time, in addition to the diagnostics performed in step 4, the catalyst monitor diagnostics will be performed. If the catalyst is marginal or the battery has been disconnected, it may take 5 complete driving cycles to determine the state of the catalyst.
8. Decelerate. This will perform the same diagnostics as in step 5. Again, don't press the clutch or brakes or shift gears.
Senior Member
Joined: 08-05-10
Posts: 893
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From: bay area, CA
Okay, so I totally revised my dtc's and anything related to catalyst/catalytic convert or evap in the tune as well, the CEL are all set to stock now because I need to past emissions, for some reason no matter how much I drive around, give it gas ect. these test will not run. I need to get my registration this month because it expires. I think illinois allows you 1 'not ready' monitor.
when are these monitors suppose to run?
what about the p0068 test above rpm? I thought that was just TB correlation related but I have that set to 8000rpm/.
when are these monitors suppose to run?
what about the p0068 test above rpm? I thought that was just TB correlation related but I have that set to 8000rpm/.
https://www.acdelcotds.com/acdelco/action/home
okay, drove around for an hour and a half, did some pulls, steady at 55mph than drop to 20 with no brakes, downshifts. let it idle for a little bit, cold started right away without key 'on', did everything and still 'not ready" evap and catalyst.... is it because I'm on e85? I don't get it, this is really stupid. my coolant temp when I got home was like 200 and I drove around FOREVER. why can't they just put a gauge in my tailpipe this is f%*king stupid!
Senior Member
Joined: 08-05-10
Posts: 893
Likes: 0
From: bay area, CA
flash to stock buddy, it may be the only way. If you cant run them with your stock tune then somthing is "hanging up" as in most likey the test the monitor is running is close to failing. Every test the monitor runs is based on a point value so for example if the number it gets back from tests on the monitor is 50 and the fail point or when it would turn on the MIL aka CEL is 52, it will not compete the monitor and will not turn on the CEL, it will keep testing untill its get a better number and will complete the monitor or a bad number and turns on the CEL. If you have access to a scan tool you can use mode 6, wich is component id testing, and you can see each test monitors are running and there pass or fail numbers. You will have pay for access to the gm page to get there componet id number definitions or you won't know what your looking at. First thing i would do is turn your tune off, it maybe the prob.
Senior Member
Joined: 08-05-10
Posts: 893
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From: bay area, CA
so you have the imfamous p0068 tp sensor code. ha h ha ha no joke bro this causes issue woth the pcm, alot of them, engine power reduced mode, shutting the car off because of its eletrical situation. If you flash your car back to stock and it doesnt read, meaning the evap system and ect, then try figureing your issue with the tp sensor. Also when you flash the car, you need so many drive cycles and so many type of driving you have to do for it even to run the tests.
so you have the imfamous p0068 tp sensor code. ha h ha ha no joke bro this causes issue woth the pcm, alot of them, engine power reduced mode, shutting the car off because of its eletrical situation. If you flash your car back to stock and it doesnt read, meaning the evap system and ect, then try figureing your issue with the tp sensor. Also when you flash the car, you need so many drive cycles and so many type of driving you have to do for it even to run the tests.
If I enable the p068 I will probably get 'engine power reduce', I COULD do it anyway and pull over and clear the code when it does happen, but then all my tests have to restart because I cleared the code. I ported my TB a little while back and I did a good job not touching the plate or where it rests which doesn't make any sense for me to have this code. Idk what to do..
Senior Member
Joined: 08-05-10
Posts: 893
Likes: 0
From: bay area, CA
I was starring at this for 2 mins trying to find what you were trying to say..
If I enable the p068 I will probably get 'engine power reduce', I COULD do it anyway and pull over and clear the code when it does happen, but then all my tests have to restart because I cleared the code. I ported my TB a little while back and I did a good job not touching the plate or where it rests which doesn't make any sense for me to have this code. Idk what to do..
If I enable the p068 I will probably get 'engine power reduce', I COULD do it anyway and pull over and clear the code when it does happen, but then all my tests have to restart because I cleared the code. I ported my TB a little while back and I did a good job not touching the plate or where it rests which doesn't make any sense for me to have this code. Idk what to do..
Last edited by 094doorSS/TC; Mar 24, 2011 at 05:59 PM.
there;s nothing wrong with it though, it started it after I ported my TB. I'm assuming it was receiving more air than anticipated. I guess I'll flash it and see what happens, if I still have a problem I'll throw a unmolested TB on there and *shwing* thanks guys.
