Chrysler Repair: 96 Concorde: no idle, wd 40, internal spring

Question
i took the battery out to use in a car to start it then 3 hours later i put it back in the concorde.now it starts right up but it wont idle,it will die unless i press the gas.i can drive it but i have to put it in neutral at a stop.runs fine at driving speed.i took the - cable off .for 5 min. cleaned the cable ends and check the cables for brakes or pinches in the wire. no other wires or vac hoses near the batt.....HELP

Answer
Hi Jerry,
Did you try for fault codes using the ignition key?:"on-off-on-off-on and leave on" doing that in 5 seconds or less elapsed time. Then watch the check engine light to see it begine to flash, pause, flash,etc. Count the number of flashes before each pause. Then repeat to assure an accurate set of flash counts. Let me know the results and we can go from there.
Also, located the egr valve on the passenger-side of the engine. It is in a small pipe the runs from the right exhaust manifolt back to the throttle body area at the rear. Notick that it has a round top, and a flange that separated it from the body of the valve that is bolted into the pipe. Inside the flange area you will see a rod with a slot. Use the tip of a screwdriver inserted in the slot to move the rod back and forth. It should close tightly in one direction by an internal spring-action. It it seems sticky or doesn't close thightly that can prevent idling. Spray some WD-40 on the stem where it enters the body and work it backa nnd forth some more. That may solve your no idle problem.
Roland
PS: Sorry for the delay as your question was just recently forwarded to the 'pool' where I noticed it.

Thanks for the response/ranking and the information. The throttle body plate and side passageway as an idle issue are of course often the explanation for a poor idle. It was in the context of a sudden on-set that I focussed on the EGR. But both are certainly possible. Very good of you to let me know.