Chrysler Repair: 1996 Chrysler Sebring LX:hard start, rough idle, mass air flow sensor, mass air flow

Question
Hello,
I have a 96 Sebring LX that barely starts and has a rough idle, its almost like its getting to much fuel and its burning rich. We have replaced the mass air flow sensor, and a map sensor. Could be a coil pack??? The OBDII is reading- Manufacture fuel air metering control Bank1 and Bank2. I was also thinking it could be the O2 sensors.  
Please help Ive sunk so much money in this car and im tired of hit and miss on these parts.  The code #s are P1297, P0172, and P0175. Thanks, Amanda

Answer
Hi Amanda,
I don't know whether the codes were erased when you replaced the MAP sensor or not (and by the way, I don't believe there is a mass air flow sensor on your car so I don't understand that replacement, can you explain?),  but if you did and it still is coming up (code 1297) then assuming the MAP you got is working I would check the wires between the MAP plug and the engine controller to see if they might have been damaged due to heat such as to be shorting to oneanother or to the engine. The 172 and 175 are just saying the mixture looks to be way off optimum.
So whoever replaced the MAP should be consulted for possible warranty replacement if the MAP is either bad or they failed to check the wiring of it.
About the only other possibility that can cause a rough idle and poor starting without a code being set is if the exhaust gas recirculation valve is sticking ajar instead of being closed when you are starting and idling the engine. Look for that in a pipe that runs from the front exhaust manifold back to the throttle body (air intake) area. It is mounted in the pipe and has a round top with vacuum hose that is separated from the body of the valve (mounted into the pipe)by a flange. Inside the flange you will see a rod with a circumferential slot in it. That is the valve stem. Use the tip of a screwdriver in the slot to lever the stem back and forth, against spring action in one direction (the closing direction). Make sure that the valve moves freely and that it closes to a dead stop via the spring. If it is sticky and not closing positively then spray some WD-40 on the stem and lever it some more to free-up the action.
Let me know what you learn about the egr and the MAP wiring, and maybe erase the codes by disconnecting the battery for a few minutes. Then drive the car for a few trips and get a fresh code readout, maybe for free at an Autozone parts store. Let me know the current codes and also tell me if you have the 2.5L V-6 or not, and whether you have the sedan or the convertible Sebring.
Roland