I am posting here because it seems like a lot of car guys post in this thread.
Car problem is a OJ type Ford Bronco. I dont know year, but it shouldnt matter. The problem is the water pump. Now the car had ran hot and leaked the water out and they had put pepper in radiator to try and get the truck home. It worked, but the pepper clogged up every water orfice in the motor, heater, radiator, it just made a mess. After several radiator flushing using stuff you buy at part stores, they decided to replace the water pump, Thermostat and radiator. in about 10 miles and less than 20 miles, The pully came off the water pump shaft. It looks to me the bolt flange was only holding about half of its total contact area, maybe 3/8 inch out of about a possible 1 inch depth. This is a press fit part and one would think the entire bore should be in contact with the shaft. Anyways, Advance Autoparts gave a new water pump and is waiting on corporate office to make a decision as to whether the water pump was defective before paying up for the new radiator and fan that got destroyed, when the pump failed. Today, we replaced the water pump and installed another new radiator and fan. We drove the bronco around the block a time or two and thought everything was fine. She takes the bronco out on the main highway and about 10 miles, slam, bamb, the second new water pump failed exactly like the first new water pump. I havent seen the pump and bolt flange yet, but of course the fan took out the new radiator. We wont be able to talk to the parts store today, but I told them to not let them have the water pump that failed until I can get something to measure the shaft size and the flange hole size. I feel the fit of the parts is not correct and if we give the part back to the parts store, then we have no way of proving right or wrong, one way or the other. I also feel that the parts store, or the company that made the water pump is responsible for replacing the water pump the second time as well as the cost of 2 new radiators and fans. Then there is the issue of the antifreeze lost both times as well as the labor for installing the water pump and radiators. If anybody has an opinion on this let me hear it.