i have a 96 sunfire with the 2.2, and every now and then ill be driving and it will just start missing really bad. and if i shut of the ignition, turn it back on and pop the clutch it normally stops for about a few miles and sometimes it stops longer and sometimes not very long at all, and then i put a thermostat in it and it wouldnt stop missing, i done replaced the fuel filter, spark plugs and wires, new thermostat, coils, and i cant figure out what it is, if anyone has any info it would be appreciated, oh and btw, i replaced the engine from a cavalier, and it has no camshaft sensor and my sunfire wiring does, so it stays unhooked, is that a problem? but ran fine b4 just like that! Plz Help