Engine control unit rebuilt. Now it won't start at all?

2011 HYUNDAI ACCENT
130,000 MILES • 1.6L • AUTOMATIC
Avatar
THROUGHLYCARING123
  • MEMBER
  • 2 POSTS
Changed the alternator, fuel pump, ignition coils, spark plugs, idle air control sensor, and the battery. Ive tested all the relays with a tester and checked all fuses. Also checked injectors to make sure they are opening and closing. The car would start and run until you shut it off then it would probably start the next day. Ive had the engine control unit rebuilt. Now it won't start at all! Help?..
Jul 15, 2026 at 12:11 AM
Advertisement
Avatar
STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
So to be clear, the engine cranks over and will not run? Or the engine will not crank over? (starter). Let go over these two videos to help us get started fixing the problem.

https://www.youtube.com/watch?v=6YRW8fyNudY

and

https://www.youtube.com/watch?v=lXLJbuAZ4CE

Please upload a short video in your response of the problem, so I can see what's going on


Jul 15, 2026 at 4:56 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.