Being used to driving manual transmissions, I occasionally forget to put my ATX in park when I shut off the vehicle ( I'm getting better ).
Today I did that without realizing it, and when I went to start the car it wouldn't turn over. I got out my multimeter, checked the battery voltage, then pulled the ignition fuse and checked if current was flowing.
What I saw was that I was getting about 164 amps over the ignition fuse when I would try to crank the engine, but it wasn't turning over at all, it didn't even seem like the starter was engaging, as I didn't feel any buck or movement of any kind. The very high current ( the fuse is only 40 amps ) makes me think the starter is engaging in a futile, energy intense struggle to turn the engine over, yet the total lack of any buck or other movement makes me think the opposite, that the starter isn't engaging at all. For example, if I put my manual transmission car in first with the parking break on and turn it over the whole car will buck.
This is on a 98 Mazda 626. So what's going on here exactly?