My 92 sc300 5 speed has drained my battery and idles rough after I removed the interior carpet, seats, and. Center console. I plugged all the connectors as they were and I was able to start and drive the car after I put her back together, but when I tried to start her up the next day she would not start. Got a new battery and the car starts up but It has a hard time idling...

 

Check for vacuum leaks

 

I don't seem to see any vacuum leaks. My battery discharge light has come on the dash After I had the carpet out. The previous owner had
A
Few
Wires
Running into the trunk with nothing connected to it so I took those out, I also notice that my car does
Not have the stock amp if any, the previous owner installed
An aftermarket sound system and removed
Prior to sale with wiring still
There. My mechanic told me my alternator was not recharging battery. I'm going to check the fuses in theorning after I charge my battery a bit.

 

Bad charging system will indeed cause alot of problem. Also make sure ur battery can pass a load test or else that battery is NFG

 

Thanks for all the help guys. I found a frayed wire when I took my alternator off. One of the connector wires Into the alt was bad, saudered it up and taped it off problem is gone.