Hi all. I have a 1993 300zx TT. My car stutters around 1500-2000 rpm when both o2 sensors are connected. However, when I disconnect them it runs like a champ because it is running on factory settings except for it burns gas. My buddies and I think it has something to do with the ECU not syncing with the o2 sensors. (both o2 sensors have been replaced one with new and one with used but works) Has anyone come across this type of problem? I have not replaced the ECU because I want to find out if it could be something else before buying another ECU Please help!
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1993 TT stutters with o2 sensors - elvee1801:58:31 06/15/14