2003 dodge neon: check engine light came on got it tested got code P2305 which is coil#2 replaced coil, spark plugs, coil pack, new battery which reset the light which a little while after light came back on, when starting car seems fine til you try to go higher than 30 miles per hour then it drops down to say 10 miles per hours and im flooring it at this point and it takes minuntes to go back to whatever speed i was at. so i thought i wasnt getting any power i got it flow tested gott the o2 sencor tested and came back fine. only thing left that i can think of is the computer?! i have no idea what else to do please help thank you.

 

also the check engine light is still on and throwing the same code but coil#2 is deff getting spark replaced it reset light still comes on.

 

Did you replace the plug wires? What plugs and gap did you use?