Someone please help!
I have a 2001 dodge ram 1500 with a 5.9 it has 120,000 miles and its broke and nobody knows how to fix it, please help.
About a month ago it started getting real bad mpg and it doesn't seem to have as much power. I took it to a garage and they couldn't find out what was wrong, they checked the fuel pump and that's fine. One of the plug wires was lookin kinda bad so we replaced that and the guy at the shop said that's all he can see that's wrong and sent me on my way.
I put on a flowmaster exhaust about 3 weeks ago and it seems like that made the problem worse. Now just yesterday everything went down hill. It idles real rough (rpms bouncing all over the place) and sometimes it stalls out if your not on the gas. Whenever it shifts it slams into gear and whenever your on the gas its real choppy, you can hear it in the exhaust that its not smooth.
Ive checked every fluid, wire, etc. and everything looks fine, I don't know what else to do besides bring it back to a garage and risk paying a bill and it not being fixed again. If someone can figure this out I would be so grateful.