ok...the car idle's at about 500-600 rpm......but it's rough.....troubleshoot me on this one.....what should I check first then second...then so on......mind you it has new plugs.....again, no tech here but can manage the basic's......thanks fellas.

 

bad injector(s). pull plug wires 1 at a time to find which cylinder(s) are dead.

 

I concur

From experience with cheap brand new spark plug wires, make sure the metal connector inside the rubber is there and not stuck on the sparkplug itself. The g/fs max kept misfiring after I replaced the injectors and it turned out to be the ****ty Advance Auto Xact wires.

 

I don't have a GXE, but isn't the idle speed supposed to be about 750 rpm? If it's too low this may contribute to your rough idle.

 

Start with the injectors as mentioned. I had this issue twice...the first time it was an injector. The second ended up being the MAF.