Ok well my car now has a new fuel pump and filter. It still seems to stutter. It was throwing a cyclinder 5 misfire code still. I took it to the shop for a diagonsis and they told me the fuel injector for the cyclinder was not giving enough fuel. Now my question come in, i figured today i would try to replace the injector. However shucks got me the wring injector( i hate schucks) so i put everything back together. Well now the stutter is much less but still there, i drove alot and it is not throwing a code. So should i a) get another diagonsis b)have shop replace injector and get pissed if it doesnt solve my problems or c) try some fuel injector cleaner or d) any other ideas?