Hi...

I have changed the A/C compressor lately (1 week) and I am starting to notice a new problem. After I drive for 30 min on highway speed(140+ kph)
the car starts to vibrate continously, seems when it heats up. The vibratio is max when I stop the car. I looked and found the exhaust to be vibrating as well as my engine.

I took the car to a mechanic in the evening after it had cool down, but all the symptoms were gone. He checked the exhaust and the engine and found they were OK.

But today morning again after 30 min of highway driving the problem reappeared again.

Any help is highly appreciated.