02PearlSE

Hey y'all, the other day I started up my max and had a loud squeal, what I originally though may be a power steering issue, but it is relieved within a minute of starting/driving. After sitting for a while I notice it happens when I start it, if I rev around 2-3k when cold. I'm starting to figure it might be a pulley? It's so tight down there though (I'm used to a 4.6 v8 where it's wide open) that it's hard to tell.

Anyone else have/fix this issue in the past?

Thanks

VQ35maxima=Beast

iTrader: (1)

It is most likely your idler pulley, try to tighten it and see if it still does it, if not it is most likely bad. Try to spray some wd on the pulley to see if it squeels at all.

maxipower

loose belt

DennisMik

iTrader: (2)

Some of those alternator bearings can get pretty loud, too.

Callmefrosty

Yes I am having a similar problem at the moment. Its either a quick squeal noise at start up or if im driving and put the A/c on it will start squealing endlessly till i turn a/c (Squeal starts during acceleration sometimes). What could this be?

mclasser

Sounds like the AC/Alt belt. Depending how old it is, you can try tightening it a little first to see if it helps before replacement.

5thgendriver

see post 2 above....

foodmanry

iTrader: (15)

AC clutch or compressor bearings.

Turbonut

Those serpentine belts need to be pretty tight and any looseness will result in
a squeal on startup or when additional stress is placed on the belt, e.g.the A/C
is engaged. Push on the belt to see if any deflection, then tighten the belt by
turning the tensioner pulley adjusting rod AFTER loosening the bolt on the pulley.