I have this noise that is really starting to bother me. It sounds like some metal on metal clanging or mild grinding. It only happens under certain circumstances, such as heavy acceleration from a stop or slow speed and shifting from 1st to 2nd under open throttle. It doesn't show itself at highway speeds of slow acceleration. It is less likely to happen if the engine is cold and it its cooler out. This morning on the way to work it was 72F and a cold engine and it didn't make the noise. I tried. On a day where it'* 92F and a warm engine it is almost definate that it will make it.
I had it to the shop a while ago and had the CV joints and everything else in that area checked out but they said it was all fine.
They did point out however, that the muffler was hitting the exhaust tips when it shook. I already had 1 tip that had broken off so I pulled the other and this seemed to help but it is still there.
Could this be an exhaust issue with loose heat shields and such or (hopefully not) is this more of a valvetrain sort of thing? The noise is starting to PMO
so any help would be appreciated.