I was going to try tomorrow and just clear the codes with the predator just prior to testing. I'm guessing this won't work in that the predator just takes off the light and doesn't clear the code at the base level of the computer....so when they hook it up to their tester it will still show the CEL? If that doesn't work, I'm really not sure what to do. Might be selling the jeep to a non-hippy state :\
You will be able to clear the codes with the handheld, problem is your car wont be in ready status. You have to have a certain numbers of drive cycles for this to happen. The emissions testing requires that your car be in ready status.
Elaborate on "drive cycles" for me if you can. I have about 15 minutes or so of actual drive time before my CEL's come on. drive cycle = key cycle?
http://www.autobarn.net/actron-obd2-autoscanner.html Dave said I needed to figure out the window between when the sensors become active and before the code blows. Does anyone know if that scanner listed above will read in real time when the sensors "warm up"? -edit- also saw this one. It looks like it's what I need. http://www.autobarn.net/xxxw-otc3358.html
Well it's not like "when the sensors warm up" It is when the OBDII monitors are "Ready" and when they are running. There are a total of 22 or 23 monitors that need to satisfied. Different monitors have different time frames when they initialize. Take for instance the rear O2's. When there is no mileage on a new vehicle, if the rear O'2 where to run, a code would be set because the Cats are sooooooo efficient when new the PCM would think there is a problem so the rear O2 monitor doesn't run until a certain mileage has been met. All monitors have different criteria and that will be almost impossible to make them all turn on the correct time and be "ready" but not throwing codes. You'll have to constantly monitor and do alot of homework. Lots of work. Jeff
From what Ive seen, you reset the codes, let it sit over night for the evap to get ready. The rest of the monitors pretty much are ready immediately. Then you just have to wait out the drive cycles for the catalyst stuff. That monitor would be helpful as long as you went straight to the inspector when it was in ready status. It would probably take you a couple tries to get it done. Keep in mind that in some states you dont have to have all monitors in ready status. In NY you can have 1 not ready I think.
going this route tomorrow. as it stands now. I have the readiness scanner hooked up and it's still "not ready" for testing. I have 2 02 codes and 1 inefficent cat code. If I use these anti foul plugs and it knocks out the 02 cels, what effect will it have on the inefficient cat code if any?
what codes is it showing..........you should only have 0420/0430......if there is a different 02 code there may be something else wrong.
P0153 02 Circuit Slow Response Bank 2, Sensor 1 P0133 02 Circuit Slow Response Bank 1, Sensor 1 those two codes are the first to pop up. With some more mileage I get the P0430 Catalyst system inefficieny below threshold Bank 2
I would start by checking the connectors to the front 02's.......they are having bigger issues right now than the inefficiency code.If the connectors are all good you may need to replace the upstream 02's.Also check the wires where they go into the plug.......it's possible that the pins pushed back.
Will do! But if there was a connection problem, wouldn't this CEL blow as soon as the jeep is cranked? Would it take 15 miles or so for it to come on? I'm not doubting you at all. I have no idea about this stuff. I more of a tooth man.
nah.....it takes a few cycles to trigger.But the upstream sensors shouldn't be an issue no matter what headers you have.
Ok, so when I look under there I have one sensor plugged on each cat. When you say "upstream", is that all contained in that one plug? For replacement just to cover all bases, I can just order 2 of these? http://estore.websitepros.com/802805/Detail.bok?no=995 ahh I see upstream on one side, down on the other!
