97 Previa, w/95,000 miles.
As I stop at a light, car is in "D" or any other Driving position selected, and tha A/C is on, strong vibrations come from the whole engine assembly.
It gets worst when the lights are on (additional load on the engine).
I have replaced all spark plugs, transmission and engine oils, slightly raised the RPM, switched to 89 octane, but no relief? No vibrations in neutral or Park. Do I need to replace engine mounts?, Please help.