Hey guys. I have a 1991 GT that I need help with. When I first got it (about a week ago) the car would idle around 500-600 rpm. When I would put it in neutral with the clutch in to come to a stop at a light, the car would die unless I tapped on the gas to prevent it. The Air filter was extremely dirty and crushed, so I replaced it with a new one. I also cleaned the MAF and IAC. After cleaning these and also replacing the plugs wires, it now idles around 800 or so, but it will still die sometimes when stopping. Any suggestions as to what is causing this problem?