Originally Posted by Daytona Coupe
Voltage would probably have to drop below 10 to prevent the ignition from working properly and if that was happening it would crank much slower - not just a little slower.
compareed to normaly it was pretty slow. I'll have to try to get it on video next time it happens if it does. Best I can discribe the difference is a normal start is sounds like it turns over 4 or 5 time in about 5 seconds. When it didn't want to start it sounded like it was turning over once maybe every 5 or 10 seconds. Times are not exact, but hopefully help explain the difference between how the car normally cranks over and what it was doing.
Anyway the test mode was very useful. I used it to check the voltage while starting and it got into the mid 10s for a moment when cranking. I also loaded up the car as much as possible, defroster, headlights and high beams, fan on high and at idle and ~2 krpm the voltage was solid at 14 volts. Checking at the battery yeilded similar results for for starting and when I checked the voltage when loaded.