I have the same thing. Mine shakes real bad, enought to vibrate the entire dash board. It goes away if I put it in Neutral while waiting for the green light (or give it some gas). I know it dosen't solve the problem. It's been doing it a long time, but I believe I remember a time when it didn't do it. I have a 95 2L dohc. It's got new timing everything, plugs, wire, belt, pullies, transmission rebuilt, throttle position sensor, EGA vlv, flow sensor, and just fixed the wires on the temp sensor and crank sensor. I've spent $3,200 (1800 on tran.)this past year and wondering if its been worth it. The PCV vlv might be a cheap thing to try. The O2 is next.