Does anyone know why my 2001 3.4 DCSB would have a rough idle after having some rock sliders welded to the frame? Any reasons y'all can think of would help!
It ran and idled fine up until I drove off from the shop I had the sliders welded at. It started up just fine and idled fine before I left the garage bay. Once I got to the first light I had to make a complete stop, that's when I felt the engine start to idle rough, almost like its gonna bog out but not quite that bad. Once I accelerate its fine and runs smooth as it always has. At every idle it would be rough. Since the exhaust is so close to the frame where the slider plates were welded, I thought maybe that could be it but after glancing it over, everything looks the same.
Could the heat of the welding cause damage to the exhaust system? Also, would a cat converter issue cause a rough idle?
It seems to coincidental to have been running fine before, then to idle rough after.
Any suggestions would help