[V8] squealing serp belt oddity

[Ingo Rautenberg]

IMO there is obviously something that either isn't aligned properly  
(doubt it) or one of your accessories is putting a severe drag  
relative to everything else.  A/C clutch going/ compressor seizing?


PS:  You DO have the correct size belt, right?  There are two sizes -  
I believe the automatic is bigger and the 5-speed is shorter (forget  
why) -- at least on the 5-speed.

Ingo

On Sep 24, 2007, at 12:51 PM, Coleman, David wrote:

> SO - My '91 5-speed with 4.2 has been enduring a squealing serpentine
> belt for several months.  In a nutshell:
>
> *       It started squealing only at idle, and would go away with  
> higher
> RPMs
>
> *       Broke under load, nursed back home, replaced with new, still
> squealed
>
> *       Replaced the coil spring behind t-belt cover with known good
> used; squealing stopped for a month or so
>
> *       Started squealing again, this time more apparent with higher
> RPMs; nearly silent at idle.
>
> *       Replaced shock absorber / tensioner with factory new; squeals
> like a mofo still.
>
>
>
> The shock tensioner is fully compressed (i.e. can't make the belt any
> tighter), yet under load, I can watch from underneath the belt walk  
> back
> and forth across the lower idler pulley - like the belt is just still
> too loose.
>
>
>
> Does anyone know if any of the pulleys (aside from the harmonic  
> balancer
> / crank) are different sizes from 3.6 to 4.2?   The 4.2 belt is way  
> too
> big; the 3.6 belt is the one in question.
>
>
>
> If no one knows about the pulley sizes, perhaps the Gates number  
> for the
> next smaller size???
>
>
>
> Any ideas welcome!
>
>
>
> -DaveC.  (nice car except it's embarrassing to drive)
>
>
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