I have a customer that we installed some long tube Kooks and a Corsa exhaust a few years ago. The car now needs to go through NJ inpection. The car as always has thrown codes because of the 02's but my problem is even if I clear the codes the inspection station may still be able to read the history and fail the car. Last time I checked the codes that came up are PO325, PO430, PO420. Has anyone been able to completely eliminate these codes from reoccuring? Unfortunately the car is due now for inspection and he doesn't want to go until we can find an answer to this problem. Thanks for your help.
Been there. I will give you the answer that was given to me (thanks E) Anti-foulers (or non foulers). You have to find the right # of them to put on there and cycle the car enough times, but this did in fact work. It takes some tweaking to drill the hole out to the size the car likes (i had to adjust hole size to get enough flow past the 02 without it reading too much or too little or you get lean codes). I will go find the link to my old thread. here it is: http://srtconnection.com/forums/showthread.php?t=15350&highlight=antifoulers http://srtconnection.com/forums/showthread.php?t=15750&highlight=Non-Foulers And Not sure how Jersey works, but in NY they didnt care about history, they only cared about current state of the system.
Adam, you're saying you can eliminate the codes, and get the car emission ready through CMR? I don't think you can...You can eliminate the CEL, but it won't pass inspection. To find out if you're emission ready, turn key to ON...watch CEL for about 10-15 seconds, if it begins to blink, you are NOT ready, and will FAIL. Only known way to "trick" the emissions ready, is enable the rear O2's with CMR (lower threshold) and use the anti-foulers as described in the links above. Takes some trial and error, all cars and areas are different. If someone that has done it with success, or is stock (hint hint Dave) and would watch the voltage on the rear O2's and find that happy place, it would make it a more precise science.
Thanks Steve I will give this a try. How many cycle times do you think we need to go through before a history would be erased?
DTC Self Erasure With one trip components or systems, the MIL is illuminated upon test failure and DTCs are stored. Two trip monitors are components requiring failure in two consecutive trips for MIL illumination. Upon failure of the first test, the Task Manager enters a maturing code. If the component fails the test for a second time the code matures and a DTC is set. After three good trips the MIL is extinguished and the Task Manager automatically switches the trip counter to a warm-up cycle counter. DTCs are automatically erased following 40 warm-up cycles if the component does not fail again. DTCs can be erased anytime with a scan tool. Erasing the DTC with the scan tool erases all OBD II information. The scan tool automatically displays a warning that erasing the DTC will also erase all OBD II monitor data. This includes all counter information for warm-up cycles, trips and Freeze Frame. Trip Indicator The Trip is essential for running monitors and extinguishing the MIL. In OBD II terms, a trip is a set of vehicle operating conditions that must be met for a specific monitor to run. All trips begin with a key cycle. Warm-Up Cycles Once the MIL has been extinguished by the Good Trip Counter, the PCM automatically switches to a Warm-Up Cycle Counter that can be viewed on the scan tool. Warm-Up Cycles are used to erase DTCs and Freeze Frames. Forty Warm-Up cycles must occur in order for the PCM to self-erase a DTC and Freeze Frame. A Warm-Up Cycle is defined as follows: * Engine coolant temperature must start below and rise above 71° C (160° F) * Engine coolant temperature must rise by 4.5° C (40° F) * No further faults occur Read more: http://www.justanswer.com/questions...sions-test-four-times-the-check#ixzz0pi11cTco
I have no idea how far back they can look but if I had to put a # on it I would say 3 - 5 Or you could look up at the post above this one as i should have LOL I will say this...once everything is reset, i drove it back and fourth to work for a few days (25 miles each way) and by the end of the week it was ready to go and passed NYS Inspection
Yes, that is what I'm saying. I'm 99% sure my car is in ready status (I'll double check later) and my tuner adjusted the thresholds so that I no longer get P0128, P0300, P0420 and P0430 codes. Totally disabling a code or system will take you out of ready status, adjusting the trip values will not. All of the same systems are in place, the sensors just have to yell a little louder to be heard.
Ernie, Add the foulers and/or sims (I have both). Use the predator (or whatever scan tool you have) to DELETE the codes. Once the above is done, you will need to drive the car X amount of miles to get the PCM back into ready state (took me about 23 miles). Once back in ready state, and there are no codes being thrown, the car "Should" pass emissions (as long as it is an OBDII test and no sniffer used). Everyone else's statements, while accurate, is long and confusing to us simple minded folk.
Adam, let me know if you're in ready status, and who your tuner is so I can have mine done. BTW, why is this not widely known. Legality? PM me if need be.
Ummm, I don't understand the "history" thing... Is it just flat illegal in NJ to have emission codes? Even if the car is never driven on the road? If they allow off road vehicles then history shouldn't matter right? As long as the OBDII is in "ready" state and you don't have any currently active codes I would expect it to meet regulations. Is that not the case? (I have to go to the post office in a little bit here. I'll look at voltages from the rear O2 sensors.)
I think you're right...at least here in Louisiana. As long as no codes and OBD ready is achieved...you're good to go. Thank you sir.
Appreciate all the advice. The codes haven't been a problem for the customer for the last 3 years, since he rarely drives it, but since the car is now overdue for inspection it has become an issue. My issue :stars: Guess I'll be heading out to AutoZone soon.
The anti-foulers were kinda tough to find...harder than I figured. I went to Napa, Autozone, and Advanced and only Autozone stocked the ones I needed.
Log duration: 3 min, 19 sec ECT -- avg: 196*F, max: 199*F, min: 192*F IAT -- avg: 107*F, max: 122*F, min: 97*F Modeled CAT Temp -- avg: 1348*F, max: 1494*F, min: 1227*F O2 Sensor 1/1 -- avg: 3.0v, max: 3.4v, min: 2.5v O2 Sensor 2/1 -- avg: 3.0v, max: 3.4v, min: 2.5v O2 Sensor 1/2 -- avg: 3.30v, max: 3.46v, min: 3.17v O2 Sensor 2/2 -- avg: 3.31v, max: 3.46v, min: 3.25v 02 Sensor 2/1 Goal -- avg: 2.70v, max: 2.86v, min: 2.61v
Because AutoZone only stocked 4 and I needed 6. Had to go back to AutoZone and have them send over one more set from another store.
Thanks dave, good info....looks like your bank 2 cat is a little more efficient. I wonder if it's looking for a specific variance of pre to post, or a specific post voltage amount with a min and max. Steveo, can you monitor yours and see what you get?
