[grfnkl]

We have a 97 Civic LX with 89,9K miles on it. The car runs wells for the most part. The engine has had a metal rattling noise for a while now but it only comes when the car gets a little low on oil (like a 1/2 quart low) and is only heard while driving in the 1500-2000 rpm range. Now we have gotten a new chattering like noise while driving. While accelerating the car will bog down make this loud chattering noise and the car will shake violently. Instinct for me is to take my foot off the gas , I let it coast then hit the gas and the car is fine. The trans shifts fine 95% of the time, the engine runs smooth, with no missing or rough idle. I'm unsure what's going on. I'm not sure if i should be looking into an engine repair or a trans repair, but something is not right! Any insight would be great!