so ive been having prolems with a rough idle and jumpy RPM for a while now. After taking it to Nissan and told they cant work on my car because I have too many aftermarket parts, i decided to try some things myself. First i replaced my stock platinum plugs with some NGK iridiums. It started but still runs rough. I noticed I need new wires and a new dist. cap so I just ordered it. Now while I was under the hood, i noticed that the wire/sensor that controlled the temp guage in the car was still disconnected. Every time i reconnected it (touched the peg it sits on) the car acted differently, whether it got rougher or smoothed out but it did act differently. Can a temp guage sensor cause a rough idle? I have no O2 sensor in the rear (heat signal O2 sensor) but can that cause it? my evap system isnt working now either, can that cause it? Ive checked on air leaks and vac leaks and have found NOTHING. What else am I missing or can this problem not be fixed... DAMNIT I need a professional mechanic or shop. Can any1 recommend a good person/place to go to that you would trust in the south florida area? Thanks.