Chrysler Repair: 92 Dodge Spirit stalling, straight blade screwdriver, dodge spirit

Question
Roland it has been a couple weeks since our last exchange.  Sons 92 Dodge spirit is stalling when decelerating from highway speeds and at low speeds in parking lot. Intermitent problem. Have checked/replaced plugs, wires, fuel filter, cleaned throttlr body, timing, disconected torque lock up solenoid, now reconected, checked engine code only only odd one we knew was occuring is the speedometer pick u pintermitently goes out. You last suggested to check the EGR...well I cant find it. You told me where, Haynes manual had a picture and auto parts store looked also. Links engi. pic http://i17.photobucket.com/albums/b97/romoj/Dscn2126.jpg  
http://i17.photobucket.com/albums/b97/romoj/Dscn2127.jpg
thanks again! John

Answer
Hi John,
I can't see it in the photos because it is hidden from view.
It is located behind the engine (between the engine and the firewall) and it is closer to the front of the engine so stand on the passenger side and look down and in behind the engine for the egr which has a pipe coming from the exhaust manifold to its underside and a pipe from it going to the intake. There is a vacuum operated round fitting on its top, and also a vacuum line going to an electrically operated valve closer to the engine, nearer the throttle body. Look under the round fitting (which is mounted on a saddle with openings for access to view) on the top of the valve where you will see a vertical rod with a slot in it which is the valve stem. Take a straight blade screwdriver and use the slot to lever the valve up against spring pressure and see if it is dropping back down due to spring's action and closing positively. Put WD-40 on the stem to loosen it up in that motion if necessary. Check to make sure the vacuum lines are all attached and not cracked. Then warm up the engine and observe the slot to see if it goes up when you rev the engine to 2500 rpm and then drops back down fully, closing the valve, when you let the engine go back to idle rpm. Make sure that the fully down position is really down because if it is not fully closing when you let go of the accelerator and coast that will cause the engine to stall. It may be that to get it to close you'll have to unbolt it and clean out the gas flow passage past the valve due to buildup of exhaust fumes in the valve as sticky crud deposit around the internal valve.
The other thing to verify is that the spark timing is set to 12BTDC with the coolant temp sensor's plug on the thermostat housing disconnected (the fan will come on when you pull that plug) and the engine warmed up. Those are the most likely causes for stalling on deceleration absent any other fault code.

Roland