So my car is still sputtering after I've replaced the dizzy, rotor, fuel filter, plugs, and seafoamed it. Actually when I seafoamed it I had a half tank of premium with some gumout and seafoam in it, then I filled up with Marathon gas and it started again.

It usually happens right after I shift into a gear, but it's worse when I cold start and try to start driving right away. It will sputter for the first few seconds of each gear then it's fine.

I also have a high idle, and it smells like it's running rich. I'm going to clean out the IACV and FITV and see if it helps at all. I probably have a CEL on but I believe that the CEL bulb was removed. I have no o2 sensor at the moment and the light hasn't turned on yet. (Sputtering was happening before my o2 sensor broke)


Any advice what to do next?

 

figure out if you have any codes?

 

Without the oxygen sensor the computer will constantly run in limp mode... it will not provide optimal power, and it will probably not run right if you've modded the setup too much.

I don't think anyone is going to be able to pinpoint the cause until you've got it set up right. First things first: oxygen sensor install. Then unplug your computer for a while so it will reset its learned maps. Then put a bulb for the CEL back in so you can check codes.

 

Will do. I have a wideband o2 from innovative, thinking bout just putting that in now instead of buying another o2, but I've never installed anything like that. And I don't really need it for a basically stock d15. Maybe I'll just get a regular o2 and then do what you said. Thanks