Water pump question
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Amateur
Joined: May 2010
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Water pump question
I have a 2001/1500/123k/5.9 and I think the water pump is going. With all the other engine noise not really sure so the question is how do I determine that it is the water pump. If I took it in to someone like PEP boys how do they ID it. Read all the water pump threads but they are more about the physical replacement.
Thanks in advance for all responses.
Jim
Thanks in advance for all responses.
Jim
Record Breaker
Joined: Aug 2007
Posts: 1,146
Likes: 1
Water pumps usually fail when the bearings go. Grab the fan blade and see if you can rock it back and forth.
There is a weep hole on the bottom of the pump. If it is weeping, time to replace it.
Impellers can erode or fall off the shaft.
The water pump body can be eaten away within by cavitation in combination with a bunch of grit circulating in the cooling system.
Very difficult to safely get an automotive stethoscope on the pump with engine running, but you can get it on the power steering and air pump and alternator and a/c compressor/ timing chain cover to see if that is where the noise is emanating from.
A length of hose held to the suspect part and your ear can work too, but the above product is a couple magnitudes better.
There is a weep hole on the bottom of the pump. If it is weeping, time to replace it.
Impellers can erode or fall off the shaft.
The water pump body can be eaten away within by cavitation in combination with a bunch of grit circulating in the cooling system.
Very difficult to safely get an automotive stethoscope on the pump with engine running, but you can get it on the power steering and air pump and alternator and a/c compressor/ timing chain cover to see if that is where the noise is emanating from.
A length of hose held to the suspect part and your ear can work too, but the above product is a couple magnitudes better.
Van & CUV Section Moderator
Joined: Nov 2006
Posts: 5,379
Likes: 116
Take the belt off and start the engine briefly to see if the noise goes away, then turn it back off. If the noise did not go away, then the noise has nothing to do with anything the belt touches. If the noise did go away, one at a time spin each pulley to see if any of them have a rough feel to their rotation. With the belt off is also the best time to try and wiggle the fan blades as landyacht318 suggested since there won't be any pressure on it.
Rookie
Joined: May 2012
Posts: 95
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From: Miami, Florida
If you do end up getting a water pump, get the NEW Bosch pump from Pep Boys. It doesn't cost any more than the other guys' pumps, but it doesn't come with the high rate of failure like the other guys' pumps. GMB pumps are the worst.
