96 Honda Accord-chugs while running Thermostat has been changed after overheating Wassup?

Run a compression test to see if overheating has damaged the engine. All cylinders should have somewhere near 100PSI compression, but whatever it is, all should have similar compression. If any are significantly different, you've probably warped the head resulting in a damaged headgasket. That's the most common problem that is caused by overheating. If you don't have one or more cylinders with low compression, just try a computer diagnostic scan to see what kind of diagnostic codes have been stored. If you don't have low compression, the computer should be able to tell you what's wrong. God luck.