My 89 Cutlass Ciera with a 3300 engine is leaking coolant. I replaced the water pump as that looked like where the leak was was coming from. It still leaks and I can see a slow drip from the bottom of the water pump but cannot tell if it is coming from somewhere else. What else could it probably be?

Then the water pump was not the problem? Hook up a cooling system pressure tester and go under the car and watch to see where the coolant is leaking out.

The most common leak would be the water pump. Before you replace anything have the cooling system pressure tested by a shop to determine for sure the pump is the problem, replacing it and still having the leak would be an expensive mistake. Have the pressure test run, any shop can do or any radiator repair shop can do it, fairly cheap thing to have done.

Water temperature rises and possible leaks to be found around the pump.

The instructions below should apply for your car. There are different engines for that model but the instructions are basically the same.

1. Disconnect the negative battery cable.
   
2. Drain the cooling system.
   
3. Remove the serpentine belt. Removal of the alternator and/or bracket may help give more room for easier access.
   
4. Remove water pump attaching bolts and nut, then remove pump.
   

To install:

1. Clean the sealing surfaces, then place a 3/32 in. (2mm) bead of RTV sealant or equivalent on the water pump sealing surface.
   
2. Coat the bolt threads with a pipe sealant GM part no. 1052080 or equivalent.
   
3. Install the water pump, then tighten the bolts to 10-24 ft. lbs. (14-33 Nm).
   
4. Connect the negative battery cable.
   
5. Fill the cooling system, then check for leaks. Start the engine and allow to come to normal operating temperature. Recheck for leaks, then top off the coolant.
   

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.

Thank you for using Fixya, and have a nice day.

With a good air filter, and a good fuel filter you shouldn't really have any problems since the fuel pump is good. You could have a vacuum leak, this can be identified by using a can of carb. cleaner with the tube attached so that you can spray near & around your vacuum hoses & connections. If you spray near a leaking hose, or a cap, or connection that is leaking, the engine will slow or stall. Only spray a second or two & allow the engine compartment to air out between spraying as it is a flamable product.

Short of that, you could be looking at ta idle speed control motor/throttle position sensor.

Testing the vehicle with a vacuum gauge could assist in identifying any other issues such as exhaust or valves. Gauges usually come with instructions & just need to be hooked to an available intake port.

good luck.

follow upper radiator to center of engine between heads at center of transmission, thermostat inside the housing that upper radiator hose connected to, its between motor and exhaust pipe crossover

The rubber smell is coming from all of your hoses and burning coolant. I would replace the thermostat, check the water pump, and the radiator for leaks.

De-pressurize the fuel system. (un-plug the fuel pump wire or fuse and crank the engine a bit) Remove the fuel filter and check on the fuel filter tubes and inside the connectors for the "O" rings. They can become damaged during removal and this usually causes the leak. Additionally, check the new filter itself for any damage.

Probably a water pump seal unfortunately. Pressurize the system, with the engine off, use a mirror to look under the water pump pulley to see if any fluid is dripping from the water pump seal weep hole.
If it is, change the water pump.
Good luck, let me know.
Regards,