screaching altenator belt

[RTLkyuubi]

When i start my micra the altenator belt screaches like mad untill i put it in drive and move the car a little. Ive checked the tension and it seems ok, not too loose or too tight. Could it mean the belt is on its way out or could it be another problem?

Ryan.

 

[misterBaz]

Perhaps it's the alternator rather than the alternator belt??

Is your battery keeping charge?

 

[RTLkyuubi]

Yea, i can listen to the radio for ages and it will still start the car. But the 1st time it did it, i turned the engine off and felt the pulley wheel on the altenator and it felt very warm to stay i just started the engine.

Ryan.

 

[misterBaz]

Hmm....I was just wondering whether the bearings in the alternator are going. I don't really know.

 

[RTLkyuubi]

I dont think its the bearings because i dont hear a grinding noise, just a really loud screach. Tbh i dont really mind about it because soon as i put it into to gear it stops. And if something does go wrong, its only the altenator, unlike if it was a cam belt. Also do 1.2 micra's have cam belts, or are they chain driven?

 

[misterBaz]

Belt driven. I have the MA10 engine and I changed my timing belt about a month ago (simply because I just bought the car and didn't know if it had been done yet)...and the MA12 engine is extremely similar.

That's for the K10, which I presume you are on about...the K11 and K12 versions of the Micra have chains as far as I know.

 

[RTLkyuubi]

The k10 engine isnt ohc is it? Because its gonna be a very small belt if its ohv.

Ryan.

 

[Fordy]

spray some wd 40 on the alternator belt when its making the noise, if the noise goes check the belt for cracks if it isnt cracking then its just a dry belt or under adjusted

 

[RTLkyuubi]

spray some wd 40 on the alternator belt when its making the noise, if the noise goes check the belt for cracks if it isnt cracking then its just a dry belt or under adjusted

Would it be bad to spray the inside of the altenator with wd?

Ryan.

 

[Fordy]

probably

 

[K10]

The k10 engine isnt ohc is it? Because its gonna be a very small belt if its ohv.

Ryan.

OHC matey.

 

[somersetk1]

i had this problem, the altenator belt was a fraction too lose even though the tension felt fine. try that.

 

[SammoHung]

an old belt will squeel even if it is adjusted correctly (the side walls of the old belt go shiney and lose friction)

treat yourself to a new one! (belt)