I have a scanner, although I'm not sure if it does live data. It came with a CD and a usb cable, but I'll grab the instruction booklet and check into those features. Yes, OBDII. I picked up a working EGR valve when I picked up the newer fuel rail with the damper on it. I figured I was there at the pick n pull for someone else so I'd grab a few "possible" bad parts for me. The guy at the front desk of the one I go to owned a Fiero and just recently had the engine blow so it's out in the yard being picked over. Anyways we talked about Fieros several times when I went there and bought parts for mine. Now he gives me really good prices on stuff, usually misc items priced at about $5.00 a piece. For instance I picked up 2 unbroken front turn signal/driving lights for the Neon, a aluminum AC hose for a Accord, the fuel rail and injectors for the Neon, EGR valve for the Neon and a very good condition door panel for a 02 Mazda Protege5 all for $30.00.
I'll check the temp sensor. Would that effect the temp gauge? Because that appears to be working fine. And yes I plan to figure out the reason for the multiple misfire first before cleaning up the carbon but I want to know what I should do to clean it up as I'm sure it's pretty bad judging by the plugs and injectors.
Do I buy the seafoam tank additive and use that in the cylinders? I'd like to get this problem cleared up so I can get it inspected and registered again. School is about to start and a second car is really helpful while my kids are in school. Still, I don't want to sink to much into it as I'm planning to put it up for sale around Febuary and find myself a 2nd gen Eclipse or Talon (non turbo, so oddly enough it will have basically the same engine as the Neon just with the intake and exhaust reversed on the head) or a VW Corrado.
[This message has been edited by Khw (edited 08-11-2013).]