2007 Jeep Wrangler

3.8 V6 230,145 miles

Engine idles at 1,000 rpms and once it gets to operating temperature it sounds like it wants to die.

Replaced

Map sensor

EGR valve

Evap canister with leak detector

Evap purge valve

Evap line to purge valve and to evap canister

Catalytic converter

Oxygen sensors

Throttle body

PCV valve

Spark plugs

Spark plug wires

Alternator

Coil pack

Cylinder heads

Head gaskets

Head bolts

Fuel injectors

Fuel injector Wiring harness

Thermostat

Radiator

Coolant temperature sensor

Exhaust manifolds

Lower intake manifold gasket

Upper intake manifold gaskets



Just put 93 octane gas in it.

The coolant has been replaced

The oil has been changed



Haven’t replaced

Computer

Camshaft position sensor

Crankshaft position sensor

 

The DTC's in the vid point to a vacuum leak, possibly in the evap system. I'm betting that you have already plugged the vac line to the evap system too see if it will idle normally -- If no, give that a try. There's also a smoke test for vac leaks too.

Maybe it's the timing chain, the cam timing off enough to lower manifold vacuum and it looks like an air leak to the PCM??? Here's a link to test I came up with for checking the slack in the chain. Kind of a long shot since there's no related DTC and you didn't mention any chain noise, but it's cheap!

Were all the parts replaced to fix this same issue, and was there any change in symptoms or DTC's? How did the problem appear initially? Some history may help.

 

I haven’t done anything to test the vacuum line.
I took off the timing chain cover to replace the gasket because that’s where it was actually leaking from and the timing chain is tight, I checked that when I took the cover off.
History: started out as a coolant leak and had some bad injectors so I just started replacing things as I went along no real reason just had a lot of miles on it and everything was still stock.
It was leaking coolant so I replaced the head gasket and the intake manifold gasket and it’s sat in my garage for a year so I put it back together and started it and then it sounded like it does now.
Going to try seafoam to clean but also because If there is a leak it might have seafoam come out of it? Maybe never done the before

 

I can't see how seafoam will help. Can you drive it on the highway? If yes; How does it run under power and does it generate any more codes?

 

Still sounds like a vacuum leak. Since it started with the head and intake manifold change I would guess there is something not right there. One way simple way to find a leak on the intake side is to skirt some WD40 around the intake manifold gasket area. If there is a leak the idle picks up and then of course drops back down.