Electrical

156,238 MILES • 6 CYL • 4WD • AUTOMATIC
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DANTHEPIANOMAN31
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  • 1 POST
My ford explorer sport trac won't start unless the headlights are turned on I bought this truck used so I don't know the history of it so any help would be appreciated thank you ..... Danthepianoman
Feb 10, 2016 at 9:09 PM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
The only thing I can really think of is check battery to body ground which is by the battery which could mean behind it or under it. that is where the starting system grounds by the battery. Then check engine to battery ground as well.
Feb 10, 2016 at 10:19 PM
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DANTHEPIANOMAN31
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Thank you I we'll try that
Feb 11, 2016 at 4:53 AM
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MHPAUTOS
  • ✓Experienced Mechanic
  • 31,937 POSTS
Add one thing here, get a dealer to run a diagnostic test using a ford in house scanner, this will show any codes and also show history codes that may be an issue here, not all codes will set a MIL light.
Feb 12, 2016 at 7:24 AM
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