ok 86 2.5 auto 2wd it has been running rich since i got it a month ago i have changed the following parts (cap,rotor,plugs,o2 sensor,air filter,mapsensor) but now worse than ever it won't idle unless you unhook a major vacumm line and when you stop at a red light people roll the window up i have went through 3 sets of plugs in a week i have soaked the injector to please help this is my only vehicle and its killing me thanks