QUOTE(HiddenReplaced @ Jul 26 2008, 03:17 PM)
I recently broke 100k miles on my 2000 GT Automatic and my engine has began to vibrate heavily (shaking the entire car) in the RPM range of 1200-1400. This does not occur while the car is sitting idle or when I am accelerating above 1500 RPM, or when I completely remove my foot from the gas and coast. In addition, if I am driving and have the gas slightly compressed at around 1600 or so RPM, I notice I will lose power and the RPM may dip into the vibrating range. The car was tuned up around recently, however no belts were replaced.
It's a Mitsubishi they're going to fall apart eventually.