I have a big problems with my gs.My car is idling with the rpm
needle fluctuating between 500 and 800 rpm/I have the check
engine light on/ I'm felling a huge lost of power, the feels
like it's running on 3 cylenders. I check with a garage for
check engine light. the computer said EGR. Anyone have
experienced that with their car? What  did u do to fix it? Any
advice would be greatly apriciated. Thanks. Keep it up with
the site, it's the best.   

Sounds like you might have a vacuum leak. Check all of your vacuum lines coming off your intake manifold. Start there and keep us updated

John 96 GS