01 impala putt
hello, my buddy owns a 2001 impala base model equipped with the 3400 engine. the engine has no mods. currently the car shifts fine and accelerates but during acceleration it putts then shoots off. car has 135,oo miles anyone experience this?
We changed plugs,wires,pvc valve, fuel filter, cleaned injections, and air filter any other suggestions...the mechanic suggested he run 89 octone gas now