2003 expedition won't start
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Freshman User
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2003 expedition won't start
Thanks for reading . My 2003 expedition has a 1year old battery, alternator is 6 months old. I checked voltage of battery is 12.4 when truck is on the voltage jumps to over 13.4. But when I go to start truck i t doesn' start unless my jumper is connected . What could this be ?? Where' does the ground go too?? Can' see end, also could it be the starter failing I've never replaced it and it has 206000 miles. My f350 failed after 180,000 miles. Is there a regulator that' failing any help would be great.
matt
matt
Veteran/Sheepdog
Joined: Feb 2012
Posts: 6,047
Likes: 110
From: Western AR
Cranks/Turns over = spins but not start
Start = engine fires off
We need to know which terminology you are using to describe your problem. Is it clicking but not turning over, or is it turning over but not starting?
Your negative battery cable goes down to the engine block and the frame.
Start = engine fires off
We need to know which terminology you are using to describe your problem. Is it clicking but not turning over, or is it turning over but not starting?
Your negative battery cable goes down to the engine block and the frame.
Fleet Mechanic
Joined: Feb 2011
Posts: 1,812
Likes: 88
From: Thousand Oaks, CA
Also, any voltage higher that 12.4v will charge the battery, but 13.8v is optimum.
Our 2003 Exped works exactly like this - 14.4v right after starting and drops to 13.7-13.9v after 20 min or so.
Our 2002 Excur goes to 13.6v after starting and drops to 13.2v.
I've checked this using several voltmeters because the lower voltages on the Excur seemed odd.
Both have been working fine with no battery issues for several years.
http://www.operatingtech.com/lib/pdf...20Charging.pdf
Fleet Owner
Joined: Apr 2008
Posts: 24,318
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From: 0,0,1
Because the battery is charged so the voltage backs off. If however the voltage never got above 13.4v to charge the battery it will eventually get weaker and weaker. It'll happen even faster with accessories and headlamps turned on.
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Logistics Pro
Joined: Jan 2001
Posts: 3,740
Likes: 37
From: Central NYS
The colder the battery is the more voltage it takes to actually push current into it.
Here in Central NY State with temps in the single digits and lower I like to see 14.7 to 14.9 volts after start up, eventually dropping to 14.2 to 14.4 volts.
Not sure what temps the OP is dealing with.
Here in Central NY State with temps in the single digits and lower I like to see 14.7 to 14.9 volts after start up, eventually dropping to 14.2 to 14.4 volts.
Not sure what temps the OP is dealing with.
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