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4.0 engine stalling problem


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So my was when i was driving the engine would stumble and act like it was going to stall. Now it won't even idle. the second it starts up it sound like its misfiring like crazy and when i give it gas it stalls. at also back fires like crazy 

 

I have replaced the spark plugs , the TPS, i have check the fuel pressure and its getting the correct pressure. I made sure the spark plug wires are in order 

 

When i unplug the MAP sensor nothing changes, the same for the idle control, O2 sensor and TPS

 

It sounds like it has a large vacuum leak coming from inside the throttle body.

 

I took the throttle boy off and clean it with carb cleaner.

 

i can't think of what would cause it and I'm about to just replace everything i can buy parts for.

 

If it makes a difference i put a little die electric grease in the spark plug wires. 

 

 

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does it run fine at speed, other then idle?

 

My jeep just started acting up. kinda like what you describe, except mine runs good at anything over idle. I remove a vacuum hose, and it'll idle. I'm thinking its the Idle air solenoid on the TB. You may want to check that.   

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i look at it today and the CPS was pinched between the transmission tunnel and the transmission so beat back the tunnel alittle and replaced the sensor. It still runs a little rough so but I'm gonna let it idle for a little tomorrow and see if the computer adjusts 

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