Originally Posted by Gen1dak
And when the power is lost due to a parasitic drain leading to low voltage, the computer (on OBD II's) gets all confused and it needs some running time to relearn things. Til then, the engine will have idle issues.
You know I didn't even think about that. brain fart i guess it's just like it had the battery disconnected and the computer has to go through it's sensor relearn.