Some vehicles equipped with 3.8L engines may exhibit engine spark knock on heavy acceleration with 87...

Bulletin number

13987

Component

Engine and engine cooling: engine: gasoline

Summary

Some vehicles equipped with 3.8l engines may exhibit engine spark knock on heavy acceleration with 87 octane fuel. Hot weather and lower octaine fuel can contribute to the cause of a slight knock on heavy acceleration. Though no damage to the engine will occur, some customers report that the sound is not desirable. Tt

Owners of these vehicles have filed 70 complaints in the engine category.