Re: '94 TBird 4.6 : hi-pitched whine
'94 TBird LX V8, 61k mi.
When I start it in the morning, I hear a very hi-pitched
whine/squeal when I stick my ear under the hood.
Seems to be either the belt-tensioner or the alternator.
Can't really tell which.
Can either component be effectively lubricated?
Belt-tensioners on 4.6's commnly fail in the first
your batterys a bit low and your fan is running
makes the alt work first thing
check smooth pullys..observer where belt rides
use a stethoscope
for a quick fix like warman does at sl ford
try a can of spray sillicone or handfull of floor dry
The belt tensioner and idler have a tendency to go dry and
fail. The bearing are sealed and not serviceable. I just
put new bearings in mine. Idler and tensioner sheave cost
about $16 each. I have a small press and mine are steel
instead of plastic, I installed new bearings for about $6
total. Quiet as new now.
But I'm not sure I follow 100%.
The orig. Ford part has sealed plastic (ball?) bearings?
You unsealed the Ford part and pressed steel bearings into
Would appreciate a brief rundown of equipment needed for
this. Maybe you have a machine shop in your garage/basement?
Most of the original sheaves are steel. The bearing is
usually a 6203 double shielded bearing which can be easily
changed out with a small press. They are not locked or
otherwise retained - just a light press fit. I have changed
them with a hammer and seal driver of the correct size. You
can probably be less classy than that and work just fine if
you are familiar with working with bearings and seals. If
you now have plastic sheaves, you are best to simply
rep[lace the whole thing.
I have thanked Lugnut before. I thank Lugnut now.
I will likely be thanking Lugnut again before long. :-)
You don't have a handy reference to a web site that'd
help a neophite to learn about working with bearings and seals
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.