My car has an intermittent cranking problem. I've had two new Costco batteries in the last year, and both do the exactly the same thing. Every once in a while, the thing just goes rrrrrrr. And after a while, it finally starts. Sometimes you have to wait for several minutes before it will miraculously start, in the meantime the engine will barely crank, or not crank at all.
Unloaded voltage on the battery is about 12.6 volts, and with the system running, it's over 14 volts. Today it was dead for about 5 minutes, then came back like a champ. Tried running the headlights on high beam with the engine off to load the battery down. Let it discharge for 10 minutes, but after that it still started like a champ, turning over immediately.
Any ideas as to what it could be?
Tuesday, June 17th, 2014 AT 7:05 PM