bschelle Posted May 18, 2004 Report Share Posted May 18, 2004 Well I just scewed up!! I installed a new NAPA water pump in my 99 DeVille and it still leaks. When I was installing the pump, it rotated like the stops were broken off. I mean that it didn't stop at any one posistion, it just rotated in the housing. What did I do? Did I break something on the pump or on the pump housing? The old pump was leaking down on the frame on the pulley side and the new pump is spraying up towards the hood on the hose side of the pump. I need expert advice so I can fix the car and get my wife off my back! Link to comment Share on other sites More sharing options...
KHE Posted May 18, 2004 Report Share Posted May 18, 2004 The pump locks in by rotating it COUNTERCLOCKWISE. Did you accidentally rotate it CLOCKWISE and bend the tabs? There is an o-ring that installs around the base of the pump that seals it to the block. Did you forget to install it? Is the pump housing cover fully seated? What is the condition of the pump cover gasket? It is a large, bell shaped o-ring that is usually reusable but it may have been damaged. Kevin '93 Fleetwood Brougham '05 Deville '04 Deville 2013 Silverado Z71 Link to comment Share on other sites More sharing options...
growe3 Posted May 18, 2004 Report Share Posted May 18, 2004 As noted by KHE it sounds like you did not rotate it COUNTER CLOCKWISE. When done properly it will only roate a short amount and lock in position. -George Drive'em like you own 'em. - ....................04 DTS............................ Link to comment Share on other sites More sharing options...
mike98c Posted May 20, 2004 Report Share Posted May 20, 2004 I had to exert force to get mine to slide UNDER the tabs and lock into place even turning in the correct direction. At first shot or two it just spun around. Link to comment Share on other sites More sharing options...
bschelle Posted June 4, 2004 Author Report Share Posted June 4, 2004 I found the problem! I bought a pressure tester and pumped it up and the lower hose had a pin hole in it! Glad I bought the tester. Link to comment Share on other sites More sharing options...
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