2002 Chevrolet Impala "runs rough" Questions

...rough. changed plugs and air filter, their is no hesitation when stepping on the gas and runs smooth when driving The needle valve inside the plenium chamber has probably got a build up of carbon on ...

coil for #1 and #4 is dead car is missfiring and running rough. removed wires off coil from 1 and 4 and it seems to be dead. move coil to a different location and seems to work their. Wondering where ...

rough idle P0300 i have a 2003 impala. 120,000 on it. it was running bad and had to put a new cat on it and it ran fine for about 2 months after. all of a sudden in a parking lot my engine light came ...

2004 Impala SS 3.8 Supercharged.Running rough. 2004 Impala SS 3.8 Supercharged. When you first start the car, it will start to idle rough, sometimes it will die. The boost gauge starts to climb when ...

I have a 2008 Chevy Impala lt it was cutting out every now and again then check engine light came on with the error code p0303 hubby changed all plugs and wires and now when you crank the car it is ...

...RUNS FAIRLY GOOD TO HAVE 138000 MILES ON HOWEVER: OFTEN TIMES IT SHIFTS REAL HARD AND WILL CONINUE UNTIL THE VEHICLE STOPS. AFTER SETTING A WHILE ,IT MAY NOT BE A ROUGH SHOFT FOR A WHILE, THE IT MAY ...

...runs rough, and many times dies. It also sometimes has a sulfur like smell. I got the codes for running rich and random misfire. I have disconnected the MAF sensor, no change, and both O2 sensors, no ...

Car just had Upper & lower Intake manifolds replaced new spark plugs & wires and now is running rough cylinder 4 and died on the highway. Restarted fine but.... the crank position and map ...

96 impala SS, is running rough at idle and will stall whenever I press on the accelerator. check air filter and fuel filter. look at spark plugs and wires make sure they are in good shape also.

...runs smooth and code vanishes. Any load or idle causes rough run and then quits. WTF? fuel regulators are notorious for going bad in them maybe start there unplug the fuel pressure regulator and see ...