I have it 2004 ram 3500 5.9

 The symptoms I have is wen engine   warm  truck star  mis intermitenn in lower idle i check my injectors workin perfet

wen i pushe foot in brake no mis 

wen i turned a/c on wen awaite

What did you do to check the injectors or confirm they are all good?  Any idea which cylinder is missing?

today I took it to my local mechanic and we proceeded to do injectors to test after that he told me that my problem is not the inllectors the problem is in the valve relif drains my truck on the road it works perfectly only when I put it in park it begins to feel a loops

problen fix

 The problem come from return check valve Get a stick