How to fix a leak that seems to be coming from the water pump or A/C?

Which engine?

1. Drain the radiator

1. Loosen the water pump pulley bolts.
2. Remove the serpentine belt.

1. Remove the water pump pulley bolts and pulley.
2. Remove the water pump bolts, pump and gasket.
3. Clean the water pump mating surfaces.

Installation Procedure

1. Install the water pump gasket and pump.

1. Install the water pump bolts. Tighten the water pump bolts to 89 inch lbs.

Install the water pump pulley and bolt until snug.

Install the serpentine belt.

Tighten the water pump pulley bolts. Tighten the water pump pulley bolts to 18 ft. lbs.

Fill the cooling system and purge of air.

Inspect for leaks.

Hi there:
Check this procedure...

2.2L Engine (see Figure 1)
Partially drain the engine coolant from the vehicle.
Remove the serpentine drive belt from the vehicle.
Loosen and position the alternator to one side.
Unbolt the water pump pulley, then remove the pulley.
Unbolt the water pump, then remove the pump and gasket.



Fig. 1: Water pump used on 2.2L engines

Clean the gasket areas thoroughly.

To install:
Install a new gasket to the water pump mating surface.
Attach the water pump to the engine with the retaining bolts, tighten them to 18 ft. lbs. (25 Nm).
Attach the water pump pulley, then tighten the bolts to 22 ft. lbs. (30 Nm).
Properly position the alternator.
Install the serpentine drive belt.
Fill the coolant system, start the engine, then top off the fluid.


3.1L Engine (VIN M)
Partially drain the coolant from the vehicle.
Remove the serpentine drive belt from the vehicle.
Unbolt the pulley from the pump.
Remove the water pump mounting bolts.
Remove the pump from the engine, then clean the gasket area.

To install:
Attach the water pump with gasket to the engine with the mounting bolts.
Tighten the mounting bolts to 89 inch lbs. (10 Nm).
Attach the pulley with it's mounting bolts. Tighten them to 18 ft. lbs. (25 Nm).
Install the serpentine drive belt.
Fill the coolant system, start the engine and top off the fluid. Check for leaks.


Hope this helps; also keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer.

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First drain the coolant if possible (you will find a drain **** on the bottom drivers side of rad). Loosen the water pump pulley bolts while serpentine belt still attached (10mm X 4). Remove the serpentine belt, and plastic diagram bracket just above the waterpump. Remove the (8mm bolts X 5) holding the water pump to front engine housing. Note the little arrow or triangle at the top of waterpump when removing, it will help you to install new water pump in same location. Scrape off most of the old gasket material, use fine sand paper to clean engine surface as best as possible. Install new gasket to water pump, and align the holes (it only goes on one way, and maybe upside down if they don't line up). Locate arrow and reinstall, torque 5 bolts to 89 in/lbs tight but not too tight. Reinstall pulley, serpentine belt and bracket. Tighten the pulley bolts, refill coolant (close drain ****). Just above the waterpump there is a coolant hose with a little 7mm screw for a bleeder. Open the bleeder (engine off). Continue to fill rad with coolant until it comes out bleeder. Close bleeder and test run. Recheck the coolant level later when cooled.

Hi, if you have water from the pulley area, it may be coolant leaking from the vent hole, in the water pump. This would leak more when cold, than hot. The repair, would be a water pump replacement. This is a fairly easy job, the only possible obstacle, is the fan needs a special holding tool, to dissasemble it. Otherwise, removing the upper radiator shroud, belt, and hoses, there are 4 bolts holding the pump to the engine.It is imparative that the engine block is clean , (to the metal), before the new pump goes on, then a mix of 50/50 dexcool, and distilled water, to refill the cooling system. Good luck...Coop

no, it runs on the serpentine belt:

3.4L Engine

1. Before servicing the vehicle, refer to the Precautions Section.
2. Drain the coolant from the engine.
3. Remove or disconnect the following:
   
   Negative battery cable Serpentine drive belt guard Loosen the water pump pulley bolts Serpentine drive belt Water pump pulley Water pump Water pump gasket

To install:

1. Clean the gasket mounting surfaces.
2. Install or connect the following:
   
   Gasket Water pump. Torque the bolts to 89 inch lbs. (10 Nm). Water pump pulley and hand-tighten the bolts at this time Serpentine drive belt Water pump pulley bolts to 18 ft. lbs. (25 Nm) Serpentine drive belt guard
   
3. Fill the cooling system.
4. Start the engine and check for leaks, repair if necessary.
5. Road test the vehicle and verify there is no air in the cooling system.

Looking at belt routing below, the water pump is the pulley all the way to the right, will have 4 10mm bolt's holding the water pump pulley, loosen 4 small bolt's on water pump pulley, remove serpentine belt, remove small water pump pulley bolt's all the way off, remove pulley, now you can see water pump, remove small 8mm bolt's from water pump, now water pump will come right off, hope this was very helpful.

The Sweet Smell is Coolant
Most likely your going to have to replace the water pump. That will be for you to determine.
If your going to do it yourself,you'll be there a couple of days.
It maybe more than you want to do,if you need a manual,I would take it to a repair shop

may be the water pump, a cooling system pressure check to pin point the leak

It is the water pump. The seal is leaking and ruptured.
You must replace the water pump. Can't just install a seal.
The water pump has a pulley attached to it.

The water pump isnt hard to replce on your truck. Basicly, what you see is what you get. Drain the radiator first, then take off the fan, the serpentine belt, 4 small bolts on the pulley and the pump is fully exposed. Just make sure the old gaskets are gone and the mounting surfaces are clean and dry.