Whistles when wet, driving me up a wall

[460Trucker]

Pretty sure the issue is the belt getting wet and causing the noise. I checked all pipes, fillers, etc. and no leaks. We've been getting a ton of rain these past few weeks and the whistle is so dang loud I'm ready to put a 12 gauge round through the engine block.

Any solutions?

 

[john112deere]

Belts squeal, they don't whistle.

But if it's a belt noise...well, your solution would be to replace the belt. Or maybe the tensioner. I'd start with the belt.

*On edit- Dad had a car that'd get a wicked belt squeal when it got wet. Ended up being the P/S pump leaking just a little- add some splashed up water and it'd squeal like a stuck pig. Is anything leaking?

 

[LEB Ben]

Whistles to me usually stem from window seals...or the deterioration of. I've never known it to be brought on by rain though.

 

[460Trucker]

You are correct, it is more like a squeal. Whistle was the closest thing I could come to.
It is definitley coming from the engine compartment and it gets worse as I accelerate.

Is the power steering pump located behind the belt, or is that something else?

 

[m78]

Go to harbor freight and pick up a stethoscope that has a metal tube instead of the pad. Point the tube at different places and it will pin point the source of the sound.

 

[smokey]

A peice of tubing will work as a stethoscope also.

 

[Mil1ion]

I suggest the problem is caused by a leaky vacuum line and the Auto transmission vacuum line usually fails because of where it is located.

If all your vacuum lines are old, replace them.

 

[smokey]

On the rangers the baffle in the air intake tube would Loosen and whistle. Not sure on this engine if that could happen.

 

[460Trucker]

I listened and now I am confident it is coming from one of the belts. The noise was so loud today I could hear it through closed windows and loud music. The belts are in good shape, no tears or wear of any kind. Should I try tightening them? Since I have never done that before, how would I go about tightening them? Are there special tools?

Thanks for the input so far everyone. Very much appreciated.

 

[kiwi f150]

If you want to check the belts Mike sprinkle some talcum powder (poor mans french chalk) over the belts before you start it up - if the squeal goes away then its belt related if not then you'll need to dig a little further ..... check the power steering fluid level as well but that noise is more like a low pitched whine.
Your truck should have an auto tensioner on the serpentine belt and it will look like an alloy round housing with a legg coming off it and a pulley on the end of the leg .... on the housing are a series of marks that will tell you if the tensioner is out of it's adjusting range - if it is then it needs replacing.
Just going on what you are describing i'd say one of the bearings is going on an ancillary such as your alternator etc and the way to check for that is to remove the serpentine belt (make sure you keep a record of the belt routing) and spin all the ancillarys over by hand - if it turns over nice and smoothly and doesn't have any "rough" patches while you are turning it it is most likely ok ...... dont forget to check the idler pulleys as well Mike.
You'll know as soon as you find the faulty ancillary bearing as it won't spin , feel as nicely as the other one's.

 

[m78]

When you get a little older and start to lose your hearing and the tinitas starts, it won't matter if your belt squeals.

Until it breaks

 

[kiwi f150]

When you get a little older and start to lose your hearing and the tinitas starts, it won't matter if your belt squeals.

Until it breaks

I had to laugh at that Mark as it reminded me of installing a big bad a** stereo and some subbies so those aggravating funny little noises go away.

 

[Beach66Bum]

When you get a little older and start to lose your hearing and the tinitas starts, it won't matter if your belt squeals.

Until it breaks

I just installed cab lights....all noises went away!

 

[460Trucker]

I just installed cab lights....all noises went away!

LOL Introducing the all new Noise Reducing LED!

 

[460Trucker]

If you want to check the belts Mike sprinkle some talcum powder (poor mans french chalk) over the belts before you start it up - if the squeal goes away then its belt related if not then you'll need to dig a little further ..... check the power steering fluid level as well but that noise is more like a low pitched whine.
Your truck should have an auto tensioner on the serpentine belt and it will look like an alloy round housing with a legg coming off it and a pulley on the end of the leg .... on the housing are a series of marks that will tell you if the tensioner is out of it's adjusting range - if it is then it needs replacing.
Just going on what you are describing i'd say one of the bearings is going on an ancillary such as your alternator etc and the way to check for that is to remove the serpentine belt (make sure you keep a record of the belt routing) and spin all the ancillarys over by hand - if it turns over nice and smoothly and doesn't have any "rough" patches while you are turning it it is most likely ok ...... dont forget to check the idler pulleys as well Mike.
You'll know as soon as you find the faulty ancillary bearing as it won't spin , feel as nicely as the other one's.

Outstanding. Great info here. Thanks Mark!

 

[1970Custom]

Could possibly be a bearing, would be my guess anyway. They make funny noises just before they give up.

I had to laugh at that Mark as it reminded me of installing a big bad a** stereo and some subbies so those aggravating funny little noises go away.

OR, if you install two 12" Fosgates and a 1000W class D amp, it then causes those squeaks and rattles...

 

[460Trucker]

OR, if you install two 12" Fosgates and a 1000W class D amp, it then causes those squeaks and rattles...

Oh my!

That's a lot of bass!

 

[1970Custom]

Will be when I get the bigger power wire run and my capacitor installed.

 

[460Trucker]

Post up a sound clip when you get it, that sounds sick!

 

[Mil1ion]

he may be hearing the infamous ford plastic steering pump and threw us off by stating it was a whistle he heard

big difference between a whistle and a squeal