I have had this problem in two diferent cars. on one the firing order of the plug wires was messed up and on the other the timing was off by just a little bit, with both problems the only time it was an issue was at idle.
it may not be what's wrong with yours but you may try checking the firing order diagram and compare it to the car and also try hooking up a timing light to it and make sure the timing is where it needs to be.
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Check the water temp sensor. I'm not too familiar with Lincoln, but on GM vehicles a bad water temp sensor will tell the computer that the engine is cold causing it to dump more fuel than it really needs thus flooding the engine. The only way to start the engine is to open the throttle body enough to get the air/fuel ratio right so it will burn. If that doesn't work look at your EGR system to make sure the valve isn't sticking. It should move freely. If it's binding then it can cause similar issues, though not as likely.
Generally speaking, the common reasons for stalling are a faulty idle air control valve or a dirty throttle body. The computer controls idle speed by how much air is allowed into the intake thru the throttle body. Those two issues would be checked first. Is the check engine light on when the engine is running ?
Bad gas? If it had a little water in it, it should clear up shortly. Might try a bottle or two of HEET-isopropyl alcohol-to remove more water, if any. If problem persists, I would have that knocking checked out. Good luck.
You shouldn't hear the fan too much while in the car. It won't start to run until certain conditions are meet. Try leaving the A/C Off or put it on Auto and hit the A/C buttom off. I don't know how hot, the ambient air temp is, where you are.
Your not talking HAVC Blower inside are you?
I have a 2004 V8 and the radiator fan is quiet
a manifold leak ,dry-rotted vacuum lines also contribute to high rpm ....is there any visible signs of gasoline on the ground try using a piece of cardboard to see if any fluid gets on it also open the hood and check for visible leaks or missing cracked vacuum lines etc but sounds like a vacuum leak