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Whine only on morning startup.

1465 Views 4 Replies 5 Participants Last post by  ATLtoCO Frontier
Since it first started to get real cold over the winter, in the morning, when I start the truck up, it starts without any issues, fan roars for a second and then goes quiet, ... moments later a whining noise will slowly start to fade in and then get constant. The sound is kind of like rubbing your fingernail along the rough side of a plastic zip-tie in a quick motion, only it's constant.. I've a few times popped the hood and tried to identify where the sound is coming from, its near the front of the engine but its ridiculously hard to tell... it's quite noisy, its loud enough for my friends to say "dude, whats wrong with your truck?" ill just tell em, "it'll go away in a minute" and it always does after a few minutes.

On a warm morning, it won't do this at all.

Alternator maybe?... bah, I don't know.
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I vote for a new belt and tensioner. 50 bucks and 30 minutes and I bet its good as new
Ive been told its the serpentine tensioner. May as well do the belt with it. I need to work on mine next weekend
From what I hear, its pretty normal. My '09 with 20k on it does it as well.
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