my stock 2.3 TC auto engine runs great, but boy at a certain RPM that engine buzzes, rattles all the change in the ashtray, vibrates the dome light lens, speaker grills etc. is this a normal 2.3 thing? otherwise engine runs very smooth with normal power.
In gear? Neutral? Park?
Moving, or stationary?
Need engine mounts? trans mount?
oh its while driving, maybe 2500 rpm. its got a flowmaster on it which i want to get rid of, that seems to worsen it. i will check the trans mount, its oily.