2005 ram 1500 4.7l was running real rough, missfiring, with a small top end tick. Currently wont start now. Replaced all coils and cam sensors and knock sensor. Hooked up to 2 different diagnosis tools and is not showing any misfire codes nor any fault codes at all. Both guys said they think the computer is bad. Anyone know what else it could be. Its my work truck and I need to get it back on the road.

 

So what's missing? Spark, or fuel?

 

Its got fuel and spark. Buddy of mine just called and said that his 05 the timing chain tensioners went bad and his was running just like mine. So I guess im gonna pull the valve covers and the front timing cover off and check it out

 

If you're able to, check the lifters as well.