Two problems related to check engine light on have been reported for the 1998 Oldsmobile Achieva. The most recently reported issues are listed below.
While driving at highway speed the vehicle began to knock. Then , engine light illuminated. Vehicle was towed to a mechanic, and mechanic determined that engine needed to be replaced, and replaced some parts.
While driving at highway speed engine began to knock. Also, engine light illuminated. Took vehicle to a mechanic, and he determined the engine needed to be replaced.