I didnt really think about it when you were @ the shop this morning but I’d put my money towards something in your igniton “at the key” etc… since its all like hanging out of place and crap… :lol:
Its hard for me to explain but call me after and I tell you exactly what I think the problem is
My Neon sometimes does the same thing… i tried putting the key back in the ignition turn it on and back off… nothing… pull the key out and nothing… engine just loves to be on.
The only way i can get my engine to turn off is to pop the hood, remove the cover for the fuses under the hood and tap on the fuses a bit… engine turns off when i tap on the fuses… I am too lazy to clean them.
Try that out, who knows, maybe it will work for you.
I had this EXACT problem when i did my motor swap. My car would run with the key out and everything was constantly getting power. After ALOT of swearing and head scratching it ended up being the ecu. I swapped ecu’s and problem fixed.
Could check the ignition switch wiring - you may have intermittent short there (or bent contact) and check for continuity while switching back and forth… disable your airbag first (- off your battery clamp)…
Under load though, even a small short can be cause for electricity hopping the contacts…