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Re: 97 Sport With problems
Make sure there isnt a light in the trunk that is staying on. A radio can have a bad capacitor inside and draw more current than the usual few milliamps to keep the memory going. Some cars have the tiny lights beside the mirror in the sun-visor, but I dont know if this was a Neon option - they might be stuck 'on'.
The final means of tracing the problem is to put a VOM (milliammeter) in series with the battery connection, to measure the current drawn, and keep removing fuses until the current draw is only perhpas 5 or 10 milliamps. This would be the amount of current the PCM needed to keep its memory 'up'.
It could even be a bad relay, whose coil was continuing to draw power - and that relay would probably feel warm to the touch, until the battery was dead.
Its also possible for a battery to have an internal short circuit, but this would usually only lower the battery voltage a couple of volts - not discharge it to zero volts. Still, in this case it would fail to start the car, or even crank it over.
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