Chrysler Repair: Chrysler 300c stalls/no codes, chrysler 300c, vacuum line

Question
I recently purchased a 2006 Chrysler 300c.  The engine is a 5.7L V8.  The car continuously stalls whenever I come to a stop/turn.  The Chrysler dealership kept the car for one week and could not determine the cause.  The tech stated that the car stalled on him as well, but was not producing a code for the occurrence.  He also said there was nothing he could do without a code.  I've researched other complaints that fall within the same category as mine and was only able to locate one solution.  It appears that there is a problem with/in the Evap System.  One consumer stated that it was suggested that he/she replace the fuel tank, but instead, this is what was done to solve the problem:

"We took the vacuum line that goes from the intake manifold to the solenoid (all under the hood) and insert in line a fuel filter that traps the fuel and then bleeds it slowly. My mechanic came up with the actual fix, so I paid a little more with the labor.
There is a way to check that this will work. When the engine stalls, pull that vacuum line off the intake and you will see it dripping with fuel, which is what causes the stall. So far, we have had no problems and I have filled the tank 5 times, with two of those over-topping.
The low-tank issue has not been tested. When we get the tank under 1/4, I will try to see if it stalls. If it does not, I will check the filter and see if it has fuel in it. With a short piece of hard tubing, I will be able to temporarily bypass the new filter and see if it stalls then (and check the vacuum line for fuel).
It is important that all of the hoses and fittings are fuel-rated so this does not someday leak and drip fuel into the engine compartment".

My question is what do you make of this "quick-fix".  I personally would like to do things right.  So, would that mean I should replace the fuel tank in order to take care of the stalling issue?

Answer
Hi Ardin,
Rather than take a chance with modifying the evap system, I would first remove and check that the egr valve is not sticking ajar due to the build up of exhaust debris on the valve stem/passageway and thus causing a leaning out of the mixture when you come to a stop. That valve is generally open when you are driving along with the throttle body open but when you release the accelerator the egr valve is supposed to close tight. Failure to do so will cause a stall and the subtle affect may not be sensed by the self-diagnostics of the engine so no code is set.
Roland
PS Please 'rate' my answer, and where you see the question about a nomination for 'volunteer of the month' consider a 'yes' answer. Let me know how this resolves.