I have a 1995 940 B230F automatic. At 40, right before it shifts into the next gear, it makes this loud noise like a metal on metal vibration. It happens when I am going up an incline at 40 apparently when the engine is under load and at the top of its gear. When the noise is present I can feather the acclerator and make it go away and come back. I wonder if it is the exhaust system making contact with the car at some point? It sounds like something metallic vibrating. It's quite loud. Heat shields are fine.

Thoughts?

Dave

 

Are the engine and trans mounts good?
Is the driveshaft carrier bearing good?