Battery draining possibly IGNITION STARTER SWITCH, advice needed please

[JFP in PA]

Normally, it takes these cars a couple of weeks to drain a good battery if the car is not used, so I would bet that your battery is weak. Suggest having the battery load tested to see if is even viable................

If the battery checks out OK, I’d get a multi meter and start looking at how much current draw there is at the battery with the engine off. Should be 40-60 mAh, if it is higher, you have a parasitic drain that needs to be located.

[munroe13]

The battery is fine as it stays charged if not connect to the car.

I think it is the ignition switch sensor but I want to disconnect it and check if this is what is draining the battery, would that be ok?

[JFP in PA]

The battery may stay charged if not connected to the car, but can it pass a load test (current draw over time)? A load test is always the "proof positive" test for battery condition and will single out an otherwise fine appearing battery.

Yes, you can disconnect the ignition switch if you want, but you should recognize that not all of the car's electrical circuits pass through it; you can still have a parasitic drain that by-passes it, so I am not sure what you will learn by removing it.

Not to be repetitive, but the correct diagnostic path way is to place a multi meter between the positive battery cable and the battery, then read the current draw. If it exceeds 40-60 mAh, you need to start pulling circuit fuses one at a time until you find the one pulling the power; that is your problem area............. If the current draw is in spec, your battery is likely toast…………