In addition to the evap code, I've had a cat code and the 02 inc, so I tried the additive as an experiment. I tried it once before on a different car and it didn't seem to make a difference then either. Yesterday at 100mi. I still had the 02 inc and the evap inc and at 110mi I had evap pending. I was hoping that one of the inc would clear before a pending came up so I could pass NY emissions. my next step is to look for evap leaks, but I don't know why the 02 inc is taking so long to clear ? thanks for the reply
Best Drive Cycle Procedure ?
Help, I'm having a heck of a time clearing the 02 and evap inc. on my '01 Durango 5.9L. In the past, 45-80 mi of combined driving usually cleared the inc's or a pending came up. This time I've tried a few different procedures over 110 mi and I still have the 02 and evap inc. I'm even trying the "guaranteed to pass emissions" fuel additive.
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I haven't had the cat code for a few drive cycles. Now i get down to just the evap inc and an 02 inc for apx. 75 mi. but then the 02 inc clears and the evap 442 and 455 come up at the same time. Hmmmm.... I have a new battery and gas cap and I'm keeping the gas tank between 1/4 and 3/4 full and I don't see any cracked evap hoses that can be seen without tearing things apart. My next step is to try to find out how to test the evap system and to try to find out what both 02 censors should be reading.
Thanks for another reply. I took a closer look at all of the evap lines and still didn't see any cracks or splits. I did change the purge valve and now after 110mi. I have nothing pending, so maybe my leak is solved ? but I still have the evap inc. and an 02 inc. I just need one of those to clear and I'll pass emissions. I'm still amazed that it's taking so long for those to clear !It might be worth changing out all those evap lines under the hood anyway. They are not that hard to get to and they don't cost that much, and since it's an '02 there is a good chance they are 20 years old and even if you are not seeing visible cracks they could be hardened up and not sealing completely properly.
I am going a bit frpom memory here, but on mine, I had put the CEL out for quite some time by changing out all my lines, but then, after about a year or so, the connector/adapter between the purge solenoid and two lines that hook to it started leaking.
Well, just like before; the 02
Thanks for another reply. I took a closer look at all of the evap lines and still didn't see any cracks or splits. I did change the purge valve and now after 110mi. I have nothing pending, so maybe my leak is solved ? but I still have the evap inc. and an 02 inc. I just need one of those to clear and I'll pass emissions. I'm still amazed that it's taking so long for those to clear !
Thanks for another reply. I took a closer look at all of the evap lines and still didn't see any cracks or splits. I did change the purge valve and now after 110mi. I have nothing pending, so maybe my leak is solved ? but I still have the evap inc. and an 02 inc. I just need one of those to clear and I'll pass emissions. I'm still amazed that it's taking so long for those to clear !
Thanks for another reply. I took a closer look at all of the evap lines and still didn't see any cracks or splits. I did change the purge valve and now after 110mi. I have nothing pending, so maybe my leak is solved ? but I still have the evap inc. and an 02 inc. I just need one of those to clear and I'll pass emissions. I'm still amazed that it's taking so long for those to clear !
Thanks for another reply. I took a closer look at all of the evap lines and still didn't see any cracks or splits. I did change the purge valve and now after 110mi. I have nothing pending, so maybe my leak is solved ? but I still have the evap inc. and an 02 inc. I just need one of those to clear and I'll pass emissions. I'm still amazed that it's taking so long for those to clear !
Thanks for another reply. I took a closer look at all of the evap lines and still didn't see any cracks or splits. I did change the purge valve and now after 110mi. I have nothing pending, so maybe my leak is solved ? but I still have the evap inc. and an 02 inc. I just need one of those to clear and I'll pass emissions. I'm still amazed that it's taking so long for those to clear !
Well, just like before; around 110 mi. the 02 inc. cleared and the 442 and 445 evap leak codes came up. Since I live in the "Rust Belt" I thought that I'd look at the gas tank filler neck and vent and they're both pretty rusty and the vent tube fell apart when I touched it, so I'm guessing that's my evap leak. If a loose gas cap can cause a leak, a rotted vent tube would probably also ?Thanks for another reply. I took a closer look at all of the evap lines and still didn't see any cracks or splits. I did change the purge valve and now after 110mi. I have nothing pending, so maybe my leak is solved ? but I still have the evap inc. and an 02 inc. I just need one of those to clear and I'll pass emissions. I'm still amazed that it's taking so long for those to clear !
After replacing the filler neck and driving apx. 125mi. the evap inc cleared, but the cat. inc. didn't. N.Y. State allows one inc. for a '01 vehicle so it passed inspection ! YEA ! The cat. inc. finally cleared after apx. 160 mi. Double YEA !
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