Steps to replace water pump mpv 3.0 - 2004 Mazda MPV

SOURCE: water pump replacement in a 2002 Mazda MPV

The reason is the water pump is driven off the timing belt, extra parts and allot more labor. No the eng does not have to be removed, labor time around 4 hours, parts about, about $125 US for parts, if it is a dealer add $75 US

SOURCE: water pump bearings are bad what are the step by

REPLACE THE WATER PUMP.

SOURCE: 3 liter mazda mpv overheating

You probably never cleaned the cooling system out.

If you have not get it done by pros.

It seems something is blocking the flow. If the water pump went bad you will know. Rarely ever heard a impeller breaks off like you think. The bearings and the seal break first.

Check and see also if the heater valve is working.

As for the over heating even new thermostats fail. Reverse flush is needed or the procan measure the pressure in the radiator cooling system and edetermine if there is a engine pressure problem. Tools and experience is the key in the game of diagnosis.







wfg8.com

SOURCE: 1997 Dakota v8 water pump replacement steps

Hope this helps!

Common Steps

1. Disconnect the battery negative cable(s).
   
2. Drain the cooling system.
   
3. Remove the accessory drive belt.
   
4. Remove the lower radiator hose (except Diesel).
   
5. Disconnect the heater hose from the pump, if fitted.
   

WARNING Most cooling system hoses use "constant tension" hose clamps. When removing or installing, use a tool designed for servicing this type of clamp. The clamps are stamped with a letter or number on the tongue. If replacement is necessary, use only an OEM clamp with a matching ID.




Heater hose pipe O-ring (arrow): twist gently when removing or installing; check condition; lubricate with coolant before installing

CAUTION Always wear safety glasses when servicing contact tension clamps.

1. Always use a new gasket when installing the water pump. Clean mating surfaces thoroughly before installation.
   
2. This would be a good time to replace radiator hoses. At least, inspect them carefully for aging or other damage.
   
3. If the heater hose pipe was removed, use thread sealant or equivalent on the pipe threads (if threaded), or lubricate any O-rings with coolant before installing.
   
4. Check the accessory belt routing against the plate in the engine compartment before starting engine.
   
5. Allow the engine to reach operating temperature and check for leaks.
   

3.9L, 4.7L, 5.2L, 5.9L, 8.0L Gasoline Engines

1. Carry out the "Common Steps" above.
   
2. Remove the upper radiator hose.
   
3. Remove the fan and shroud assembly.
   
4. On engines except 4.7L, remove the four water pump pulley bolts and remove the pulley.
   
5. Remove the heater hose pipe mounting bolt, if fitted.
   
6. On engines except 4.7L, loosen the bypass hose clamp at the water pump.
   
7. Remove the seven water pump mounting bolts and, on the 4.7L, one nut.
   

WARNING Bolts may be of different lengths. Be sure to note their locations.


To install:

1. Reverse the removal procedure.
   
2. The 8.0L engine uses an O-ring to seal. Use a new one and lubricate it with petroleum jelly before installation of the pump. Also, use sealant on the threads of the heater hose pipe, position the pipe as shown before installing the pump and tighten the nut to 12 ft. lbs. (16 Nm).
   
3. On pushrod engines, connect the bypass hose to the pump while installing it.
   
4. Tighten the bolts to 30 ft. lbs. (40 Nm) on pushrod engines, 40 ft. lbs. (54 Nm) on the 4.7L engine.
   
5. Spin pump to ensure the impeller is not rubbing against the timing chain case.
   
6. When installing the heater hose pipe, ensure that the slot in the pipe bracket is bearing against the mounting bolt. This will hold the pipe in as far as possible to prevent leaks.
   
7. Tighten pulley bolts to 20 ft. lbs. (27 Nm) on V-6 and V-8, 16 ft. lbs. (22 Nm) on the V-10.
   

Water pump mounting hardware—4.7L



Use a prybar to keep the water pump from rotating while pulley bolts are removed



Bypass hose clamp (arrow) must be tended to before removing the pump



Water pump bolts differ in length; note check location before installation—3.9L, 5.2L, and 5.9L gasoline engine shown



After removing the bolts, pull off the pump and place it in a safe location