Expert: Sean Halliday - 1/21/2007

Question
Hi, as i'm driving my car sometimes my 1992 Buick LeSabre will make a quick jerking/hesitation that is getting more and more frequent. It happens about once a day and today it happend twice in a row. Could this possibly be a spark plug wire problem and how do I know if the wires are bad?  

Answer
Could be electrical or fuel.Theres really no way to tell as there are so many components on the engine that will cause this.You will have to check all one at a time as you will need a tune up probably.Everything depends on maintenance and how many miles you have on the engine.Routine work,,etc,,,I would recommend a shop to find this problem as its expensive to throw parts at the engine and hope you get the right one to fix it.Could be wires,plugs,fuel filter,fuel pump.EGR valve,Ignition module,etc,etc,,,,