I have made a dumb mistake a couple of month ago when I change the radiator on my 96 Camry -- with return line to the automatic transmission fluid disconnected, I tried to back the car I have heard loud clanking sound and immediately stopped after about 2 feet.

The problem I have now is that at very low speed (i.e., just getting out of garage),when I give a bit gas and take foot off, I always hear some clanking sound from under the car. I know the CV joint starts to give some noise when turning. But this is a different type of noise -- the noise from CV joints are continuous as long as you turning the wheel, but this only clanks like one or two times and then gone.

Can someone please give me some advice what might be the problem?

Thanks in advance.

Can someone help me