Car sounds like either it's missfiring or it's not getting enough fuel. It stutters at low rpm's and even when going 60-70 mph. Just started happening, I talked with a guy at Schucks and he said it's because I put Shell regular gas and they dillute their gas cause they are using reserves. His advice was to go and get 76 premium gas. My car is an RS, so premium is not neccesary. I bought fuel injector cleaner and a new fuel filter so hopefully it helps I am also going to change the spark plugs, but what else do you think it is? Please help.

 

check you cap and rotor also. Or jsut do a full tune up.

fuel filter
Plugs
Wires
Cap Rotor
Valve adjustment
Oil change
Tranny fluid change(if it needs it)

 

bump