eseebeck

Thanks so much for all the info. I believe I had bad gas. I added a can of seafoam, drove about 30 miles around the neighborhood and things are much better. Just for fun, I sprung for new plugs, new plug boots and a new air filter. Just got home from a 200 mile road trip ( daughter's sport camp) and it is back to running like a champ. thanks again for all the info !!

2late4u It appears that the journey 3.6 L doesn't have a MAF sensor?? i've searched my intake and don't recognize anything that looks like it. I also searched with google and can't find any info on it. Parts stores don't show them as a replacement part and I checked carid.com and their schematic doesn't show one. Is that correct, no maf on this car? Thanks again

2late4u Thanks for the info. Where would you start? I've checked the o2 circuitry and everything looks fine. I'm searching for the mass air flow sensor, it must be hiding near the throttle body. any info on the maf would help. I'll search out the manifold pressure sensor and fuel pressure regulator. Thanks so much for the info. I've got some searching to do. If you have any other tips or ideas, please let me know. Thanks

I disagree, asking questions is, by far, the best way to get good help. Understanding what is going on with the vehicle is the only way to solve problems. Thanks again for your input.

generally short trips with the occasional trip of 100 miles. No need to get short with me, I'm just asking questions, that what a forum is all about, helping each other out.

really ?? you think spark plugs with 100k miles could trigger those two codes? I'll give it a try, but I find it suspicious that both post cat o2 sensors would put out the same code, at the same time. That would require one or more plugs on each bank of the engine malfunctioning at the same time. Am I thinking correctly? The car has been running like a champ since new. Then, it starts acting up and the cel comes on with these two codes. I was thinking it would have to be something that would affect both banks of cylinders. Like an intake problem or fuel delivery problem, before the injectors. But I could be overthinking it? Thanks for you input. I'll run pick up some plugs and replace them yet tonight and let you know if that does it. If you think of anything else, please let me know. Thanks again

Thanks for the welcome. it is the 3.6 L vvt it has 114000 miles on it. it has original spark plugs, air filter changed around every 30 k miles. oil changed about 3k miles. the light just came on. it's been driven about 20 miles since the light came on.

any idea why I would get both codes at the same time. engine runs rough, seems like it has a misfire, but no misfire code comes up. I've cleared the 2097 and 2099 and they come back. supposed to be rich fuel at post cat sensor. everything looks fine at sensors, both pre and post cats. when watching o2 sensor performance on my scan tool, the post sit about .75 volts with very little variation. pre cat sensors jump around, but randomly. i've read they should jump .1 to .9, but mine jump all over between .1 and .9 randomly. I was thinking plugged cat. converters, exhaust flow seems fine. seems strange that 2 or 4 o2 sensors would go bad at the same time. it seems it would be some other problem. Any help is appreciated