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Unread 08-30-2013, 11:46 AM   #1
B_Hopps
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Join Date: Oct 2012
Posts: 5
Another coolant loss thread

I am on the hunt to locate the leak (think I actually found 2 under the radiator), plan to do a pressure test this weekend but this has more to do with a sound.
I've been hearing a sound that can only be described as the tone you get when you blow air across the top of a plastic bottle. It isn't constant, generally only when I get to 50-60 mph on the highway and then it's on and off.
Reading the Haynes manual it says that water pump shaft bearings may howl when they've failed.
How do I go about checking to see if this is the case?

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Unread 09-01-2013, 08:03 PM   #2
Jeep_Fanatic
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1988 MJ Comanche 
 
Join Date: Jun 2013
Location: St. Louis, Missouri
Posts: 129
Quote:
Originally Posted by B_Hopps View Post
I am on the hunt to locate the leak (think I actually found 2 under the radiator), plan to do a pressure test this weekend but this has more to do with a sound.
I've been hearing a sound that can only be described as the tone you get when you blow air across the top of a plastic bottle. It isn't constant, generally only when I get to 50-60 mph on the highway and then it's on and off.
Reading the Haynes manual it says that water pump shaft bearings may howl when they've failed.
How do I go about checking to see if this is the case?
check the water pump
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