What does the camshaft interrupter on a 1989 Buick Lesabre do and where is it located?

The camshaft position sensor (often mistakenly called a "camshaft interrupter") on a 1989 Buick LeSabre doesn't "interrupt" the camshaft itself; it *senses* the position of the camshaft. This information is crucial for the engine's computer (PCM or ECM) to accurately time the ignition and fuel injection. Without it, the engine won't run correctly, or at all.

Its location varies slightly depending on the specific engine in your 1989 Buick LeSabre (likely a 3.8L V6), but it's generally found on the engine block near the distributor (if equipped) or close to the front of the cylinder head, near the camshaft itself. It's a relatively small sensor, often with a single wire connector.

To be sure of its location, you'll need to consult a repair manual specific to your car's year and engine. A Chilton's or Haynes manual will have diagrams and precise instructions. You could also search online for a diagram of your specific engine. Simply searching "1989 Buick LeSabre 3.8L V6 camshaft position sensor location" might yield images or videos showing you where to find it.