What did I say 4 months ago about that car. Anyways, to provide some more insightful comments now.
Make sure the ECU is getting power get a list of pin outs, test for voltage, make sure there is no/next to no resistance on the grounds. Depending on where the ECU is mounted you may want to get a new harness from the junkyard if possible (unless it runs through the firewall). If anything after the eclipse’s wiring, and saturns tranny cooler is fixed, I’d be willing to give it a shot.
Also check your ECU relay/contacts/wiring, seeing as there was issues with the fuel pump relay prior. (Corrosion, then later flaming wires, and what ever else might have occured )
If anything try “hot-wiring” the ECU (WARNING: ONLY DO THIS IF YOU ARE CONFIDENT IN DOING SO*). As well as the grounds also.
EDIT: And just like home computers, it’s entirely possible to get a bad part new. If possible try it in another neon to verifiy it.
*Not responsible for loss of limbs, fire, explosion, pointy objects, cuts, burns, nuclear fission, more toasty plastic fun, decapitation, sore thumbs, limp wrists, flat tires, angry neighbors, unmowed lawns, fuzzy cheese, rice, etc. However if it does result in a positive outcome (ex. World peace, alternaive fuel source, turbo, florida breaking off from the US) I will gladly take credit. :tup: