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About a month ago my fan belt snapped after several weeks of it squealing. I've recently replaced it but it still squeals. I had a mechanic check that it is tight enough and he seems to think that it is.
It seems to squeal mainly while the engine is cold, and particularly at night when the headlights are on. It squeals for a long time and sometimes the only way to stop it is to turn the headlights off and on again, although sometimes this doesn't work.
While it was squealing this morning I lowered the window and noticed that it was very slow to open.
Could there be a problem with the alternator that would case the belt to squeal?
It could be that the battery is on its way out and the alternator is doing overtime to keep up or some twin cams have crank shaft pulley failure issues that make the belt squeal a bit.
It could be an issue with the alternator.
A bit more investigation is required I think.
Kirkynut
The underdog often starts the fight, and occasionally the upper dog deserves to win - Edgar Watson Howe.
Check the crankshaft pulley although the damage is not always obvious to the eye without getting to both sides of it. I am assuming from earlier comments that it is the m13a dual cam motor by the way.
Thanks for oyur reply. Yes it's the DOHC. The crankshaft pulley is a lot cheaper than an alternator so will check that if the battery tests out okay. Thanks again
Just had a closer look and I noticed black residue on the front of the alternator (see pic). Could it be that the alternator pulley is seizing and damaging the belt?
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