1999 Ford Expedition starting problem

Tiny
STRESSMAN33
  • MEMBER
  • 1999 FORD EXPEDITION
  • V8
  • 2WD
  • AUTOMATIC
  • 175,000 MILES
I installed a new battery and my vehicle started everyday for a week. Then I left it sit for 3 days, then it wouldn't start. I took the battery cables off, waited 5 minutes and put them back on, the vehicle started right up with no problem. This is happening every couple of days. What is the problem? Thanks
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Sunday, April 19th, 2009 AT 11:57 AM

6 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
When it doesn't start, does the starter work?
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Sunday, April 19th, 2009 AT 3:56 PM
Tiny
STRESSMAN33
  • MEMBER
After a couple of days the battery is drained so that the vehicle will not start. Everything works until I turn the key to start the vehicle and then evrything goes dead. Once I let off the key turning, the lights and radio come back on. Then I will take the cables off the battery for 5 to 10 minutes, reconnect them, and the vehicle will start without a jump or any problems. I'm tossed up between the starter motor solenoid or another item draining the battery while sitting overnight. Thanks for your help?
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Sunday, April 19th, 2009 AT 10:00 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
If the battery starts the vehicle after 5 or 10 minutes of being disconnected, chances are there is a bad connection at the battery or the ground at the engine block. Is everything in good condition?

On the flip side, a bad diode in the alt will drain a battery overnight, but it would require a jump start to start again. Your battery really isn't dead. When this happens again, use a volt meter to check to see how much power there is from the battery. Also, have a helper turn the key to the start pisition to see if the battery drops off. When doing this, make sure you have a good connection at the battery post not the terminal cable.

Let me know what you find.
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Monday, April 20th, 2009 AT 4:57 PM
Tiny
STRESSMAN33
  • MEMBER
All connections are good, clean, and tight. I haven't connected the battery in awhile, so it won't drain again. The battery is reading 12.7 right now. Once I connect it and start the truck, the reading is 14.7, which tells me the ALT is charging and working properly. I'm going to hook up the battery and let it drain tonight, and see what the reading are tomorrow. It will most likely be 10.5, like before. Then I will take the cables off and back on 5 minutes later, and it will start the vehicle without a jump. Crazy huh. I'm thinking the starter first peak, or the starter motor solenoid is draining it, but don't want to change it and find out something else is doing it later. Thanks for your help again.
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Monday, April 20th, 2009 AT 6:49 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Keep in mind, the alt can charge the battery when the car is running, but have a bad diode in it which will kill the battery overnight.

Check out this site for checking for a battery draw:

http://www.2carpros.com/first_things/why_is_my_car_battery_dead_over_night.htm

Let me know what you find.

Joe
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Tuesday, April 21st, 2009 AT 7:46 PM
Tiny
STRESSMAN33
  • MEMBER
Ok cool thanks. I will look into that page. But I do realize that there is a starting system and a charging system. I feel my problem is in the starting system not the charging system. But I do feel what you are saying. I'm in the Army as a MAINT TECH, but on diesel ENG's. I do appreciate all your help too.
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Tuesday, April 21st, 2009 AT 10:09 PM

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