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Odd starting issue

FallingShadow645

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May 29, 2018
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City, State
Orlando, FL
Year, Model & Trim Level
05 Ford sport trac XLT
Been having an issue with my 05 sport trac XLT. On first start of the day I have no problems, runs great. Every startup after that in the same day is very rough, and just recently got to the point where it will die after a few seconds. If I feather the throttle for a second before it dies it will smooth out and run fine until next start up.

There’s no check engine light and no stored code however I have a battery light that I cannot seem to get to go away. I have just recently replaced the alternator and had the battery and alternator checked, both cleared fine. Changed the connections on the terminals, cleaned all wires, light persists.

Battery is from 06/19 but like I said it cleared when tested.
 
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Mbrooks420

High Voltage.
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You might have a bad coolant temp sensor. Typically if the motor is totally cold, or totally hot they’ll start fine. Anywhere in the middle it’s hard to start, at least in my experience.
 
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FallingShadow645

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05 Ford sport trac XLT
You might have a bad coolant temp sensor. Typically if the motor is totally cold, or totally hot they’ll start fine. Anywhere in the middle it’s hard to start, at least in my experience.
Would this cause my battery light to be stuck on?
 
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Mbrooks420

High Voltage.
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The two issues aren’t likely to be related.
 
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Mbrooks420

High Voltage.
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Are you sure there’s not a charging issue? What’s the battery voltage when running at idle?
 
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FallingShadow645

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Year, Model & Trim Level
05 Ford sport trac XLT
Are you sure there’s not a charging issue? What’s the battery voltage when running at idle?
So I had it checked at an autozone because I can’t find my meter but,
car off 100% charge : 12.9
Idle : 13.8 if I’m remembering correctly
Held at 2k rpm : 14.Something
 
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oklagp1200r

Active Member
Joined
October 19, 2007
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City, State
Newcastle,Oklahoma
Year, Model & Trim Level
2001 Exployer Sport Trac
So I had it checked at an autozone because I can’t find my meter but,
car off 100% charge : 12.9
Idle : 13.8 if I’m remembering correctly
Held at 2k rpm : 14.Something
Nothing wrong with those numbers!
 
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