I have a 1992 Toyota pickup.
4 cylinder
5 speed manual transmission

I have a whirring noise coming from the transmission in 5th gear.
Noticeable, but not loud enough to drown out radio.
no noise in 4th gear.

264,000 miles
mostly highway
towed trailer 2-3 times
carried loads (compost mainly) 2-3 times yearly
bought car in Spring 1993.

Any ideas?

How to fix?

have replaced clutch,(last year) and gear shift grommet-doohickey.

Jerry

Suspect it is a bearing going after all those miles so costly to repair just
to stop the slight noise. Have you tried draining the fluid and replacing
with synthetic? I use Valvolene but others swear by RedLine (its just
harder to find). I found it makes mine shift smoother and it may even
quieten yours down. Its $8 a qt so for $30 its worth shot -- and is a 60k
normal maintenance thing.

"Say not the Struggle nought Availeth" <nospam@nospam.net> wrote in message
news:DdObc.4847$yg6.3613@newssvr32.news.prodigy.co m...

Jerry:

I had an 83 Toy 4x4 and researched this issue extensively. From most
sources, the answer was the input shaft bearing. Here is something that was
posted on a Toyota site. Hope it helps.

David


Here's a test,
Put the Trans in neutral, start the truck clutch in, then let the clutch
out,and back in. Is there any bearing type noise humming of a worn or bad
bearing? In this mode only the input and counter or cluster gears are
turning,the output shaft is not. So if it s really noisy it may be the input
shaft bearing,common, or the cluster shaft bearings,also common,but not as
much as input shaft. With the fact you stated before about no noises in 4th
gear,which is direct drive,leads me to believe that the input or counter
gear bearings are bad. Also check your center support bearing ,if
equipped,and the front u-joint...yup I have had them make the same weird
noises.
If the input shaft is worn and sloppy it may give you the hard to shift
problem as well, beware if this continues you can count on spending more
money than just bearings, stop now and tear it apart and check it before it
eats up the gears. If the clutch is worn the diaphragm will become flat
there by making the through out have to go farther to disengage the clutch
disc, this is very common as they wear down.
SO there you go ,step one
1# check for noise in neutral.
2# if no noise proceed to checking u-joints and support bearing first.
3# if they check ok then head into the Trans, but first jack up rear wheels
and put into gear and shift slowly through the gears, then listen for noises
,take notes.
Get a Toyota repair manual if you can and look at the Trans part, read and
be careful to follow any and all instructions.
Careful disassembly can prevent the unnecessary cost of parts that were not
broken before you started...;)
Hope this helps