I've had this annoying metal sounding rattle I get underneath my car. It seems to intensify when accelerating and more so when the engine is hot. My mechanic says he can't see what the problem is. He bent a piece of metal underneath he said, but the noise is sill there.
It sounds like something near the exhaust pipe or the drive shaft as I only seem to hear it when it is out of Park. It goes away or quiets down when I decelerate or accelerate from the point of the noise.
Someone suggested that this may be the heat shield out of place, but I don't know where the heat shield is.
I thought they were referring to the flap inside the front end of the manifold, but I found out later that this is related to the EGR valve (recycling fumes, etc.)
Does anyone know what to check out ?
1976 230.4 W115