Does anybody know how to change the water pump on a 99 nissan sentra???


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Old 12-19-07, 07:10 PM
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Does anybody know how to change the water pump on a 99 nissan sentra???

My sentra broke down due to overheating, the radiator was still cold and the car can be restarted and ran normally untill it gets hot again (<5 min) I figured the problem was the waterpump (not the thermostat) because i can hear the belt slipping like the pump is siezing up right before it dies.

Does anybody have any experience replacing the waterpump on a 99 1.6L Nissan sentra, any help would be much apprecieated
 
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Old 12-20-07, 07:06 AM
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If you're planning on keeping the car, it would be a good idea to invest in a basic repair manual like a Haynes or Chilton's (my personal preference is Haynes).

Newest I could find at Autozone.com only goes to 1996; may or may not be the same:

http://www.autozone.com/az/cds/en_us...rInfoPages.htm

Just curious, but how hot and for how long did it overheat? Reason I ask is that modern engines do not take overheating well and can quickly warp a head and blow a head gasket.
 
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Old 12-20-07, 07:41 AM
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Originally Posted by mechanicwannabe
My sentra broke down due to overheating, the radiator was still cold and the car can be restarted and ran normally untill it gets hot again (<5 min) I figured the problem was the waterpump (not the thermostat) because i can hear the belt slipping like the pump is siezing up right before it dies.

Does anybody have any experience replacing the waterpump on a 99 1.6L Nissan sentra, any help would be much apprecieated
I concur wholeheartedly with what The Tow Guy has stated. That being said, take the belt off and inspect the pump. Is it leaking? There should be no leaks. Use a small inspection mirror if necessary. Is the pump difficult to turn by hand? It should turn smooth and with no resistance. Is there any play in the shaft that the pump pulley bolts too? Other than a barely discernible click there should be none. If you can any say yes to any of my questions then the pump needs replacement.
 
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Old 12-20-07, 08:49 AM
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The Haynes manual is #72051. Have a good one. Geo
 
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Old 12-20-07, 03:41 PM
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i have the haynes guide and was carefull to keep the car from dieing from heat more than the first time, i was just wondering what was the best way to go about changing the waterpump i.e. do i haf to take anything else off or if there is anything i should look out for


p.s. the haynes guide gives litteraly 1/4 of a page and two pictures for what i know is at least a two or three hour job for someone who knows what they are doing (not me)

pps i have distroyed another car by overheating, all over a $15 thermostat that took me 30 min to replace without any experence, learning the hard way is great
 
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Old 12-21-07, 04:45 AM
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I don't think there's anything especially daunting about the job. I don't have direct access to your year, but I'm assuming it's an external pump (as opposed to timing-belt-driven). Generally you will need to remove the belt or belts. On some vehicles the next step will be to unbolt and remove (or move to one side) any accessories that may be in the way such as the alternator. On some vehicles there are clearance issues when working in close to the innder fender well or strut tower that requires the motor mount to be unbolted and the engine raised slightly for room. This would be addressed in the repair manual if it was necessary. In addition it often makes the job easier if you remove some minor items that are not actually called for to be removed, but which make working much easier - stuff like the washer tank or coolant recovery tank. KEY POINT: Once you have the old pump removed, be meticulous about cleaning the gasket surface on the block of old gasket material. Also this is a good time to replace radiator hoses and thermostat. Also inspect belt (I'm assuming serpentine).

If yours is a timing-belt-driven pump, it's a whole new ballgame and you should seriously consider having it done at a garage.
 
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Old 12-21-07, 06:51 AM
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thankyou it is a serpentine belt driven and i am praying that i dont haf to loosen the moter mounts (only got one jack) ive got the parts and will be attempting to repair tomarrow.....thanks for all the help.
 
 

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