5thGenRams Forums

Register a free account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members through your own private inbox!

No Bus after Engine Rebuild

dmaples18

New Member
Joined
Nov 14, 2025
Messages
1
Reaction score
0
Points
1
Age
32
Hi,

So I had the camshaft go bad in my 5.7 and had a local mechanic rebuild the engine. He replaced the necessary parts to make the engine run on 8 cylinders all the time instead of switching from 4 to 8. To do this, he sent the computer off to have it reprogrammed. I get my truck back and it started randomly getting a no bus message along with all the lights on the dash going off. Sometimes, I'd take 3 or 4 trips before it'd happen with no problems. The truck would still run, though on a couple of occasions it would not turn off until the computer reset. I've also come out to it and the computer will be locked up. Nothing will turn on except ram logo on dash. Wait about 5-10 minutes and it will reset, start and go with no issues. I sent the truck back to him and he had it for a week. The first day the truck did the same thing it did to me and then the rest of the week he couldn't get it to do it again. Got it back to day and it did it first thing after about a 15 minute drive. Any suggestions on what may be causing this?
 

Attachments

  • 20251104_120525.jpg
    20251104_120525.jpg
    158.1 KB · Views: 12
When mine was having this issue it was the star connector behind the small panel to the left of the steering wheel. Search for can bus issue thread or wild electrical issue thread I think on here
 

Users who are viewing this thread

Back
Top