Question about car troubles:
Using a multimeter, my car's battery is reading 12.54 volts and power to the starter fluctuates between 7 volts and 9.5 volts when the car is off. With my wife's car hooked up via jumper cables, my battery and power to the starter reads 13.6 volts, but the car still won't start. It will turn the engine over twice before intermittently turning over once ever 1-2 seconds.
In the past year, I've replaced the battery, the battery terminal cable ends, and the starter. When this issue first crept up a year ago, I towed it to a shop, and a mechanic charged me $100 to "fix a loose ground". None of my grounding points have (obviously) faulty contacts.
Any ideas? Is it time to start ripping out the main power and ground cables and replacing them? I can't get my car started to test my alternator, but a bad alternator wouldn't prevent the car from being able to be jump started, right?
Yesterday, the car started normally in the morning and got me to work. It started normally when I left work, but after driving for 20 minutes and shutting the car off for 10 minutes, the starter solenoid wouldn't even click. It was like I had no battery in the car at all. When jumper cables are hooked up, all of my lights/stereo/power windows work normally, but the car won't start.
Thanks for any ideas, folks.