I have a 1990 Oldsmobile Regency 98 3.8 Liter with 273,356 and when I am driving down the road it starts to jerk and jolt really bad. We have changed the spark plugs and wires, new fuel filter, and a new air filter. Unplugged the Oxygen Sensor and the EGR Valve but still does it with them unplugged. Someone suggested the PCV Valve but we don't know where it is located. What are your suggestions?
Jul 7, 2007 at 7:23 PM