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Discussion Starter #1
This is on an '88 toy extracab efi.

When travelling above 30 MPH the truck makes this howling or whining sound. It sounds like it's coming from the front end of the truck. But it may be the tranny, I'm not sure.

It's not the tires, they are the stock size with a snow tread pattern.


Any idea what this could be? The faster I go the louder it gets. At 60 MPH or higher is when it's the worst. It's not REALLY loud, but definitly noticeable. Just started a few weeks ago and have had no luck finding what it is...
 

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Did this arise in conjunction with the vibration issue above 50?
 

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Sounds like gears. Anyone whose driven a car with straight cut gears knows what I mean
 

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U joint at the slip yoke mine howled for a couple of day's before it turned into a slight vibration theb well the outcome wasnt preaty!
 

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Discussion Starter #7
It howled before the vibration, and still howls during the vibration.


I don't think it is like the howl of straight cut gears, I may be wrong though.


Suggestions?
 

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Suggestions!!!

Maybe you should check your wheel bearings!
Front and rear!!! Rear bearings going out can
be deceptive!!!(can sound like tranny problems)

At least deceptive to me before I knew what I was
hearing!!!

'84 yota -Steven:flipoff2:
 

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Discussion Starter #9
Makes sense, what's the easiest and least amount of time consuming way of checking?
 

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Drive it around for a while...check to see if one of the hubs is warmer than the rest. Could be a sign of bad bearings.
 

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The best thing to do is take a little time and eliminate
the simple easiest things. I would start with the wheel
bearings, jack each tire up and rock the tire(lifting at
the bottom)in and out at the top. There should be little
to no play(backlash/clearance)this is for the front. If
things seem loose disassemble, inspect, repack with
grease, or replace the wheel bearings.

AS for the rear bearings, same thing for checking, but
they are sealed bearings pressed on the axle, and should
have no play(looseness).

I mean no offence in explaining this, as I don't know your
knowledge/skill level, but it seems like a wheel bearing.
Buy a factory service manual for specs, or search here.

I'm drunk again!!! Yeehaw!!!:beer::usa:

Hope this helps!!!:flipoff2:
 
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