the WD40 on the belts has helped. There may be a bearing going out on 1 of pullys (i know, f, its not Kings english). What goes out on these various pulliies . . .
Water pump, tensioner ...ect

I hope you didnt do what I think you just did...
Explain in deaph what you did plz

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95 Honda Shadow ACE 1100.
1999 Plymouth Neon Expresso. 2.4 swap, 10.5 to 1 comp, big cams. Autocross time attack vehicle!
2012 Escape, 'hunter" (5 sp 4cyl)

WD40 is not a particularly good lubricant. If you have a squeeky belt, replace the belt, it should take care of the problem. Also cleaning the pullies a little if there is any grease or oil on them can't hurt.

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Ali Al-Chalabi

2001 CLK55
1999 Dodge Ram 2500 Cummins Diesel
2002 Harley-Davidson Fatboy
Merlin Extralight w/ Campy Record

Back when cassettes were king and I used to fix 'em, the car stereo salesmen's friend was a customer's can of WD-40 and a 'squeaky' old cassette player. It cured the squeak - and all other functions. Repair was NOT an option at that point.

Steve

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'91 MB 190E 2.3
'08 RAV4 Ltd 3.5
'83 Lazy Daze m'home 5.7

WD-40 applied to the belts will cause them to slip a lot. This may be quiet, but they may eventually disintegrate from a chemical reaction...

Yes, a bearing can squeal and make other noises under the hood.

WD-40, or any other lube, may quiet the bearing for a while, but the noise usually comes back.

Or, the bearing might fail without making any further noise, except one final screech over the pulley that is no longer turning before it disintegrates...

Remove the belt(s) and try turning everything by hand, see what's binding.

WD40 or Water displacing formula #40 secretly design by a rocket scientist from one of our defense contractors to remove moisture from the electronic controls inside ballistic missiles was never intended as a belt dressing, if not for employees stealing the cans for use at home and upon discovery, a marketing genius from the firm convinced the company to make it avaliable to the public to compensate for the millions of dollars the company wasted with the first 39 formulas.
You need a new belt.

WD40 is good for spraying on fishing rods after you get back from a trip. Thats about it, even then it isn't so great.

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1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200

It's good for displacing water from a moist ignition system, but not so good when the car is running.

On that same note its good when used with a match to flame bugs.

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But what do I know...

1984 300SD 256k

and don't lube firearms with it, it dries and leaves a crusty film

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2002 Ford ZX2
2 x 2013 Honda Civics

Replace the bad pulleys. The squeeking will stop.

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Regards

Warren

Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor

Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL

ENTER > = (HP RPN)

Not part of the in-crowd since 1952.

WD40 is bad for the wiring, it damages the plastic/rubber around the wires.... so I think the only thing its good for is the bug grilling thing

WD40 is bad for the wiring, it damages the plastic/rubber around the wires.... so I think the only thing its good for is the bug grilling thing

I would replace the belt and the pull. You can lubricate, but as someone els wrote, it will only make the problem go away for a short while

you know discount auto sells it by the 5 gallon drum if you love it so much

a friend of mine.. hindu born in england parents from india said to me.. why do you white people think wd40 is do great.. i replied.. i dont know.. my grandpa said so ..so . yea