I have a 2003 2.4 that I am rebuilding for my daughter. This thing was in rough shape when I got it but at least it was running. Since I had it, I have replaced the radiator, hoses, CPS, tps, battery, terminals, air box, fuses, coil, coolant sensor, map sensor, oil sensor and O2 sensors. I also had the pcm rebuilt because it failed and I rebuilt part of the engine wiring harness.
So I finally have this thing running again but I still have an issue with the fan relay and backfires after the engine is warmed up. Relay I am addressing in another thread. The backfires are what is concerning me now. When I start up it idles smoothly around 850. Once it reaches operating temperature though it starts to stutter. If I step on the gas it almost dies and backfires.
I have codes for the transmission (which I think it low fluid), p1491 for the fan relay (unrelated) and small and major leak detection.
I thought sure the stock air box might resolve the issue but no joy. Any suggestions on what to check next?
Also jeep has no catalytic converter.
So I finally have this thing running again but I still have an issue with the fan relay and backfires after the engine is warmed up. Relay I am addressing in another thread. The backfires are what is concerning me now. When I start up it idles smoothly around 850. Once it reaches operating temperature though it starts to stutter. If I step on the gas it almost dies and backfires.
I have codes for the transmission (which I think it low fluid), p1491 for the fan relay (unrelated) and small and major leak detection.
I thought sure the stock air box might resolve the issue but no joy. Any suggestions on what to check next?
Also jeep has no catalytic converter.