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Why does my 5.4 run a little cold at idle?

   
Old Dec 2, 2015 | 08:06 PM
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Devin Finnerty's Avatar
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Why does my 5.4 run a little cold at idle?
Just recently I noticed my truck temp was dropping below normal with slow driving or at idle especially when I run the heat I'm so confused it seems to run good besides sounding like a diesel but I don't care about that does anyone know what this could be before winter sets in
 
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Old Dec 2, 2015 | 08:46 PM
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2008_XL's Avatar
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From: Burlington, VT
Originally Posted by Devin Finnerty
it seems to run good besides sounding like a diesel but I don't care about that
I'd care about that.
 
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Old Dec 3, 2015 | 12:06 AM
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glc
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From: Joplin MO
I'd replace the thermostat, sounds like it may be sticking part way open.
 
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Old Dec 4, 2015 | 02:16 PM
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IMO too: thermostat stuck open.
 
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Old Dec 5, 2015 | 07:29 AM
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From: Philly Burbs
thermostat...agree

worrying about her sounding like a diesel...agree 100%.
 
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