how do I replace the water pump on my1992 nissan sentra on 1992 Nissan Sentra

over heating have to refill water everytime we stop mechanic says its the water pump want to do in myself need to know how to get to it and replace it.

Asked by for the 1992 Nissan Sentra
Get a repair manual from your local parts store. Just the money you save doing the water pump will more than cover the cost. It is well worth the money.