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Discussion Starter · #1 ·
I have a weird howling noise in the front of the truck that only happens every other day or so, and only when speeds are around 60-65mph or when driving 45mph into a decent head wind. It is very anoying, and I was wondering if anyone else has had this happen before I tear the truck apart. Thanks,

Mav
 

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Is the truck up to operating temp, or does it happen when the engine is still warming. Are you towing when this happens?
 

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my only thought was your thermostat. Don't have electric fans do ya :confused:
 

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is it your fan kickin on and off? my fan liked to randomly kick in and out. towing or not, it didnt matter. it was not at any certain speeds though.
 

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Wouldnt be intermiten then.
 

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it can be intermitent...like if u drive into the wind it could cause the tires to howl or if u drive away from the wind that could keep them from howling...
 

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Read his post real carefully. Only happends when he is going 60-65 or when going 45 into wind.

But while were on the subject when was the last time you had the tires balenced or alighned>?
 

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do you have a bug shield? Mine howled like crazy at the above mentioned speeds, until I tweeked the install on the bug shield, noise gone.
Thats a good one. :GoodJob
 

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It's your fan. What mods are on the truck? If there was a previous owner, you may have some mods that have either reduce airflow through the fan area, or create more heat, a boost valve for example, will heat soak the charge air cooler and cause this. Just 5 psi in warm weather can trigger the fan.

It comes on goes, "wooooooooo" for maybe 10-30 seconds, then off.
 
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