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Squeaky Alternator On Startup

wilch

By wilch,
in General Maintenance

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wilch Grand Master

wilch

Posted
Posted

Hi guys,

Every morning and afternoon when I start my car up she squeaks like all buggery.

When I watch the PFC hand controller the squeaking doesn't stop till the volts read over 14 (takes a few seconds.) then she's quiet.

If I stop the engine, then restart immediately, it's fine. No squeaking. But goes to 14.7v almost immediately.

Should I tighten the alternator belt, and if so, by how much?

Or is something else wrong?

This problem only started happening after I got my car back from the panel shop after 4months...

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https://www.sau.com.au/forums/topic/185246-squeaky-alternator-on-startup/
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Abo Bob Grand Master

Abo Bob

Posted
Posted

Actually you could take your air con belt off and switch it over to the alternator. They are all very simiar lengths.

Yes you do need to tighten it but also try putting some pure soap (not bath soap) on the inside of the belt. If the squealing comes back after getting it tight and the soap then replace it cos the squealing it's already done has damaged it.

wilch Grand Master

wilch

Posted
  • Author
Posted

OK, I think I'm going about this all wrong.

05.jpg

This long bolt was loose, almost falling out. I've tightened it. BUT, tightening it doesn't make sense to me. Having this tighter means a looser belt.

What am I supposed to do?

Loosen bolt 2, then pull the alternator towards the guard?

d00dz Grand Master

d00dz

Posted
Posted

Tighten 1 slightly, but not all the way, bolt 2 is the tention thingy which when tighten moves the alternator towards the guard. (ie. tightens the belt). Tighten bolt 2 to the tention u want, then tighten bolt 1 to "lock" the position in.

  • 7 months later...
bumble_bee Rising Star

bumble_bee

Posted
Posted

just a noob question...

but isnt the clutch fan ment to turn off like after awhile???

or nope becaoz it on the same belts as the alt. belt too.

.

so yeah?is it meant to turn off wen it gets to a normal operating temp?

becoz i just got my timing belt done..and i notice the next day, i can hear a squeaky sound from the front part of the engine..

so i assumed it was my timing belt...

but now being lik 4 days later..i dont think it is..

i think its the alt./fan belt

but could pwr str belt..

or air-con belt...

but unsure so far...

but one think i do notice is that the sound(squeaky sound) only appears to heard wen the enigne is at normal operating temp...

any ideas

dmr Mentor

dmr

Posted
Posted (edited)
becoz i just got my timing belt done..and i notice the next day, i can hear a squeaky sound from the front part of the engine..

so i assumed it was my timing belt...

but now being lik 4 days later..i dont think it is..

what timing belt did you use?

me and a few of my friends have installed gates racing timing belts for our cars.

after the install, we noticed an extra whirring/squeaking/rotating sound added to the engine when the car is warm.

it's because of the new belts tightness, and over time it will loosen itself to it's perfect tension. if not, it will remain with that sound which isn't a bad thing. it might put a tiny bit of stress on your idler and tensioner, but i find it safer to have a belt a lil tight rather than a little loose.. especially at high revs.

Edited by dmr
some_cs_student Veteran

some_cs_student

Posted
Posted
but isnt the clutch fan ment to turn off like after awhile???

or nope becaoz it on the same belts as the alt. belt too.

.

so yeah?is it meant to turn off wen it gets to a normal operating temp?

Why would the clutch fan turn off, its on a belt that isn't going to stop while the engine is on :( ?

Anyway, the clutch fan will start slipping at higher RPM because the fan can't spin at too higher speed, and it will lock more and spin faster when the cars hot (at idle speed anyway).

bumble_bee Rising Star

bumble_bee

Posted
Posted

well ive still got the same problem..lol

my cars done just over 1000k's with the new belt...

does anyone no how long it will b before the belt loosen to the original belt tension?

like as mention above and before...

people mentioning hear a squeak or sound from doing the t-belt..

and said it disapeared after a period of time..

if so..

how long is this time..lol

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