Jump to content
SAU Community

Recommended Posts

i got a noisy drive belt that only seems to whine at idle when it drops between 770-790rpm.

how the hell do i fix it????

all the belts are only 8000km old... i've been told to rub dry soap on it to let it slip a little which helps for about 20min then the whine comes back.

suggestions please?

Link to comment
https://www.sau.com.au/forums/topic/116546-noisy-belt-how-to-fix/
Share on other sites

Hey BSK.

Can you give us more info?

When you said all belts, is that all fan belts AND the timing belt?

How many km on the clock?

Timing belts can be noisy if old, or aftermarket. Bit of a whiney noise

Could be bearings ^. They sound like a metalic whiring noise.

Hey BSK.

Can you give us more info?

When you said all belts, is that all fan belts AND the timing belt?

How many km on the clock?

Timing belts can be noisy if old, or aftermarket. Bit of a whiney noise

Could be bearings ^. They sound like a metalic whiring noise.

yep all belts were changed 8000km ago including timing belt. the timing belt is a gates belt. currently at 104 000km

the sound is like a goat trying to hum while being choked, not really a metalic scrapey sound..... not loud but annoying and like above only when im stopped at the lights/drive thru and the idle drops.

a pulley bearing maybe?? is there some kind of spray lube i could use?

sorta hard to tell exactly which belt cos i cant isolate the sound with the fan right in my face.

Edited by BSK

Hi BSK,

I've got the exact same noise, I believe in my case it's either the timing belt (brand unknown) or the idler/tensioner bearings (more likely)....I used the 'screwdriver stethoscope' method to pinpoint where the whirring was coming from, put the head of a large flat head screw driver firmly against the timing case cover and listened thru the handle, I could hear the noise clear as a bell.....just be careful if you try, there's lots of stuff spinning on the front of the motor! :/

If it's a squeal, tighten the belt.

If it's not squeeling, but sounds nasty, try loosening it a bit? My belts were noisy when I overtightened them.

Otherwise yeah, I replaced my idler and tensioner. Not a bad idea, but playing with the belts a bit cheaper and quicker to test this theory.

If the noise stopped when you put the soap on it ,I would tighten the belt a bit, if you can move the belt more than its thickness its loose but make sure you have some movement, if the noise is still there try the soap again.

Why soap works is a bit of a mystery to me, as it is made up of part oil/fat and part acid, maybe it cleans the belt and pulleys and squealing is a result of the belt slipping on the pulleys, but hold it there long enough on both sides and the squeal goes away, well it has for me anyway.

You can buy belt quietener, CRC make it.

I have the same problem and the belt quietener spray worked for 5 mins. It isn't worth it in my personal experience.

I am about to remove all the belts and degrease the belts and the pulleys and then refit.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Seat of the pants assessment of the new intake: The car is way less "doughy" when hitting the loud pedal, especially off idle when stopped or in traffic, I did use a cheapo lazer thermal thingo to measure the temp around where the pod filter got its air, it was between 55 - 60°C, in saying this the car was shut off and not moving, so the OEM intake pipe was not supplying any fresh air to where the pod was when the car was at least moving A weird bonus was induction noise on the throttle in the cabin increased a bit,  I was worried that I was actually going to lose some of that induction noise I love so much, outside though, when I got the daughter to do a WOT drive by pass for me, the induction noise has increased alot when on the throttle, not quite ITB doort, but well up there I'm extremely happy with the results and have been exploring the country roads in the region  As for house mods: 1.New front fence is up and is awesome, it really upgraded how the joint looks from the street, and the added security is nice 2. Electricians have replace some interior lights, and with more lighting in the garage, a few new motion detecting lights out the front above the garage, front room, and at the front door, which I have already found heaps helpful coming and going, also now has fancy pants CCTV all round the house The only hold point for power though is the solar and batteries due to supply issues, although this will happen over the next few weeks 3. I have done a heap of landscaping out the front and I'm almost ready to do a new small retaining wall with some nice blocks to replace the brick and cemented in rocks around the raised garden beds cemented in river stone "was the fashion at the time" the house was built. I currently have a pallet of retaining wall blocks and 2 bulka bags of 20mm blue metal to replace the wood chip that is in the raised garden beds around the house 4. I now have 3 big raised garden beds for out the back to grow some vegetables, about 70cm high, 200cm long and 100cm wide 5. My 2 compost bins are already pretty full with brown, green and kitchen waste from the landscaping I'vedone so far, but they will probably take a few months to break down, so anything else that gets chopped, trimmed, and kitchen waste will just start filling the base of the raised garden beds to about 30cm before I start throwing 40cm of good compost, and stuff, for the vegetables to grow in, I'll need a few ton of compost and soil, but the local supplier can sent me bulka bags of the stuff Basically the logs, wood chips and a few strategically placed rocks for drainage, will give the beds some good organic materials down low to break down over time, and they will hold moisture during the warmer months to save the water in my big arse water tank if we don't get alot of rain So, all in all, the car and house mods are going well, and I'm really enjoying being retired, I sleep in too 0700 and slowly plod around inside until I feel like actually doing anything, and only work in the yard for as long as want, which has actually been alot over the last few weeks,  although when you look at it, it seems that not a huge amount of work has been done,  until I look at the before I started the work pics Happy days and good times indeed 
    • hahaha yeah. Plan is to get side skirts and probably just rear pods. But going to do them one-by-one. I've got a set that I really like from RHDJapen, but that one isn't shipped to AU. So need to find someone who can get it for me
    • Here's an idea, answer the questions I asked you as they are trying to work out WHY the LSD will be binding up in a straight line.
    • You haven't driven many modern cars then have you? Most of them have sfa steering feel with their stupid electric bullshit steering systems.
×
×
  • Create New...