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Discussion Starter · #1 ·
I have searched a number of threads on ticking noise, but none that sounds like mine. When the engine is running (truck parked) I can hear a faint tick (cyclical, like 2 times a second) in the engine bay, coming from the driver's side, near the radiator.

-The rate of the ticking doesn't vary with engine RPM
-I can't hear it when I'm sitting in the truck, even when parked
-It doesn't go away whether engine is cold/warm, and outside temp doesn't seem to affect it either.
-It's faint enough that you can only hear it if you're near the front of the hood.
-happens even when engine cooling fan is not on
-Truck is stock, no mods

It makes a sound similar to when a plastic fan blade gently strikes a nearby part of the same material (e.g. it's not a metallic noise).

Truck is otherwise running fine, but I do want to take it in to have it checked out. Thought I'd get some input from you all before hand.

Thanks
 

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Discussion Starter · #5 ·
Update...

Updating this thread in case it helps others....my dealer diagnosed it as a bad serpentine belt. They replaced the belt and the tensioner. No more ticking. Covered under powertrain warranty.
 
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