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Knocking noise when cold but after it warms up it goes away on a 2001 blazer can it be the water pump because i some problem with that as well.?
Wiki User
∙ 17y ago
It is possible that the bearings are going bad on the water pump but you are going to have to listen to where the noise is coming from, whether it is inside the engine ( rod knock or oil pressure issues ) or outside (pump bearings or pulley issues).I lean toward internal wear or damage to the engine since the noise goes away when it warms up which indicates that when good oil circulation is present the problem goes away, bad bearings in a water pump will always make noise until they are repaired.
Wiki User
∙ 17y ago
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