Question about 1991 Oldsmobile Ninety Eight

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Water pump is out need to replace ..how do i get the old one out;

How do i get my water pump out of my olds 98 3800 motor..there is this big braket in the way ..need help

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  • msjk1111 May 28, 2009

    i will get the book thank u

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  • Oldsmobile Master
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Chilton's or, Mitchells books can Guide you through this repair; they are availible at autopart stores or online at; Chiltons.com or. Mitchellsonline.com

Posted on May 28, 2009

  • andrew blum Mar 14, 2011

    To get the water pump out you must raise the left side of your motor (as you are facing it). To do this place a jack under the motor and get it tight, then remove the motor mount located directly next to the water pump. Slowly raise the motor until you can get the water pump out leave jack under motor until new water pump is installed....

    DON'T FORGET YOUR GASKET SEALANT

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This job is not as bad as it seems at first blush.
1: take off the pulley bolts while the belt is on. You may have to move the pulley by loosening the idler a bit and spinning the pully. Then remove the belt. Taking those bolts off with the belt on makes it easier.
2. You have to take the motor mount off. Put A jack under the oil pan using a board to disperse the load. There are three bolts going into the block (one of which requires removing a small black metal bracket for the alternator, but that's 2 easy bolts.) Don't bother with the big long bolt in the middle of the engine mount. There are 4 bolts holding the other end of the engine mount to the subframe, 2 at the bottom of the bracket, and 2 that are difficult to see along the side rail below the mount. Once all 7 bolts are clear, raise the engine a little. You may have to knock the mount gently with a hammer or put a little weight on the bumper to knock it free. This will allow you to wiggle the motor mount out of place enough to access the entire water pump.
3: it's a basic water pump swap from here. Remove bolts, scrap en off gasket gunk, apply rev to both sides of the gasket, and tighten. Then put the motor mount etc back together and slap the belt back on. You'll need to refill the coolant system, and it's a good idea to fill it, run it for a few minutes, and fill it again until the level remains constant.

Posted on Oct 15, 2014

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Posted on Jan 02, 2017

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