RPMs reaching almost 0 while driving, down shifting ????

[badass8]

So there is 2 problems with my car...recently I have had some electrical issues with my car... i know the worst to have. To try to solve that problem I have gotten my alternator and starter rebuilt with a new ignition chip.

First Issue: While I am driving say in 4th gear going about 60 per say and I go to neutral or stop kinda fast to get into 2nd my RPMs go almost to 0. They get very low, even times where my lights start to flicker like its going to turn off (which it has before, but started 3 seconds later again). Or sometimes it gets really low and then pick itself up again... not sure why...

Second Issue: After I got my alternator/starter rebuilt the next day my car sat over night with no lights turned on what so ever, go to turn on my car doesn't start at all.. get it jumped thinking maybe the battery was dead.. drive it around for awhile to get it charged up.. go to work for an 8hour shift.. go to start it DEAD again. so same thing jumped..etc etc.. So for the last couple weeks I have actually been disconnecting my battery cables from my battery because SOMETHING is draining my battery and I'm not sure what...


any suggestions would help a lot
I know its a lot but thanks for reading!