I have a 05 neon sxt? (previous owner(s) converted exterior to appear as a srt4) so I pulled in my driveway after work Friday and the car went to half power. Plugged in the reader after she stopped dead, got p2305 ign cool b secondary ckt p0508 idle Intel system ckt low and p0038 Ho2s 1/2 heaster cut high. Now I already new my MAF was funky, figured it was cause my k&n filter was dirty. So I cleaned the sensor with carb cleaner multiple times. Still ran the same. I let her sit for a day and now it's running like nothing happened no codes or anything. Any suggestions??
PS I already have a brand new 9cm.

Any help would be greatly appreciated!

 

Welcome to the 2nd gen Neon forum.

Electrical connection problem maybe, so when its running & warmed up like the time of the problem, raise the hood & begin a wiring wiggle test, especially where the computer electrical connections are made & along any runs on the engine where they see heat, vibration, engine torque movement, to see if you can induce the problem.
Let us know what you find.