1990 Buick LeSabre Q&A
1990 Buick LeSabre Question: Camshaft Interrupter Magnet
The magnet goes in through the back of the cam sprocket. The timing cover and chain and gears will have to come off. - Visitor
The cam sensor interrupter (magnet) may become demagnetized and/or fall off of the camshaft gear causing the Check Engine Light (Service Engine Soon) light to illuminate. On higher mileage vehicles...