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Engine Whistle

 
Old 11-01-2011, 12:23 AM
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Originally Posted by Cork View Post
I recently went muding and now I think some of my bearings on my pulleys are dried out. Now the bearings have gotten louder than the pipes on the truck. Any idea on how to replace them??????
On your pulley's?
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Old 11-02-2011, 09:19 PM
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rent a pulley puller from autozone for free, and just replace the pulley. they are cheap
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Old 02-10-2012, 11:55 AM
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My high pitch whistle at 1800 rpms when cold was coming from my alternator bearings. New alternator no whistle.
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Old 03-14-2012, 09:47 PM
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Originally Posted by Ron Croxell View Post
My high pitch whistle at 1800 rpms when cold was coming from my alternator bearings. New alternator no whistle.
How much was a new alternator?
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Old 05-09-2012, 10:36 PM
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I have this whistle also but only when it is cold and after the engine is up to temp and been a highway speeds for 15 min or so. It varies will the engine speed.
The question have is how many people have the aux trans cooler?

As the trans comes to temp the cooler is bypassed. I think this whistle is from the cooler bypass valve just cracking open. Hence only when cold and after it is up to temp and been driving 15-20 min
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Old 09-12-2012, 02:51 AM
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Hi everyone
This problem in engine from xc side here is a whistling, loud sound coming from under hood in my XC 2001. Will this be costly to fix.
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Old 04-20-2013, 09:11 PM
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Smile Engine whistle

My 06 with a 5.4L had a high pitch whistle or ring that only occurred in cold weather. Came and went with power changes, I replaced the idler puller below and left ( as seated in the truck) of the alternator. The noise went away. The steel outer race of the bearing was slipping on the aluminum hub it was mounted on. Worth checking.
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Old 06-24-2013, 09:33 AM
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Originally Posted by Cork View Post
I recently went muding and now I think some of my bearings on my pulleys are dried out. Now the bearings have gotten louder than the pipes on the truck. Any idea on how to replace them??????
which bearings?
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Old 06-24-2013, 09:37 AM
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Originally Posted by Coner View Post
How much was a new alternator?
can vary from 125 to 200. They are really easy to do it your self. I personally recomend getting an upgraded alternator if your running aux lights or an upgraded radio with subs and all that good stuff.
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Old 10-12-2013, 04:47 PM
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Originally Posted by bgris View Post
can vary from 125 to 200. They are really easy to do it your self. I personally recomend getting an upgraded alternator if your running aux lights or an upgraded radio with subs and all that good stuff.
Any suggestions on where to buy and what to look for. Just do a search for upgraded alternator for F150 (year)?
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