'96 Firebird woes..

I have a 1996 Firebird 3.8L that has had several instances where the service code indicates a bad EGR valve or EGR sensor (forgive terminology mistakes,
please). I've replaced the EGR valve once and the problem has returned. Checking the spring and obvious visuals, I see nothing wrong with the new one (2-3 months). Is there another module or another problem that could be causing this? I also have a coolant smell as though the overflow is just venting but no real loss of fluid nor over heating. I was thinking maybe the catalytic converter was getting plugged and causing some sort of back-pressure but that's just a wild guess. Any suggestions or experiences?
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'96 Bird T-Tops 3.8L 5-speed...love those gears



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Bring the car to Autozone, have them scan for codes( they do it free), jot that code and description down and bring that back here.
Let's start there. Joe--ASE Certified Parts Specialist & 10th Ann.Club Tech Director '80 Carousel Red Turbo T/A, 27k orig. '79 "Y89" 400/4 speed 10th Ann. T/A, 57k orig '84 Olds 88 Royale Bgm 2 dr, 307 "Rocket" (lol), 143k and still going....
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