r/GrandCherokee • u/Breadtheef • 14h ago
Rough engine during idle & drive
1999 GC Laredo 4.0.
Inherited from my grandpa, original owner. 100k miles.
New NTK O2 sensors, NTK crankshaft position sensor, IAC valve, air/fuel filter and new fuel pump from Hella.
Giving up.
It will run after sitting overnight. It will feel good and civil for 5 minutes then bog down and buck, hiccups and all, then die.
It will die and die until it sits again.
Any ideas? Bout ready to light it on fire.