I don't know. You have me stumped. Does it sound like a detonation, or is it more like a sheet metal rattle? Perhaps they forgot to tighten an exhaust shield after installing the 02 sensors. But from what you describe it sounds like it's dependant on engine load.
An exhaust leak that sounds like a rattle or that vents exhaust against something causing a rattle. These are some ideas. I hope it helps.
Friday, December 28th, 2007 AT 10:29 PM