Tip & How-To about 2000 Jeep Grand Cherokee

How to test and replace radiator cooling fan.

Hi.

Here a tip illustrating steps to test and replace the radiator cooling fan and the parts that may cause cooling fan malfunctioning.

Before replacing the fan, make sure that the fan is really faulty.
Read volts at fan contacts or jump the fan wiring to energize the fan directly.Ensure that fan blades are not blocked.

If the fan is OK, then the faulty part is either thermostat or fan relay.Ensure also that you have tested the 15A fuse in the junction block and the 40A fuse located in the Power distribution Center (PDC).

Here a diagram showing the location of the fan relay:



Finally, here below the steps required to replace the fan. The procedure is quite simple.

  • Disconnect the battery negative cable and set it apart.
  • Disconnect the electrical connector to the radiator fan.
  • Undo the bolts that hold the top fan housing and fan assembly (this is called Radiator Shroud).
  • Remove the Radiator Shroud housing.The radiator shroud will come out with the fan sliding toward the top side.
  • Install the new fan performing the operations in reverse order.

Here a diagram showing radiator shroud and cooling fan assembly:



Regards.

Ginko.

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2001 vw beetle service manual ? need to change water pump, how hard is it? dont look to bad.


Check this procedure to how to replace a water pump (DIY Complexity: Moderate / Time: 3.5 hours):

Parts:
1. Water Pump

Tools:
1. Screwdriver
2. Scraper
3. 3/8 in. Drive Ratchet
4. Cooling System Pressure Tester
5. Needle Nose Pliers
6. Socket Set
7. Radiator Hook Tool

Supplies:
1. Coolant
2. Silicone Sealant

Steps:
Step 1 With the engine off and cold, open the hood and locate the vehicle’s water pump.
o Tip: Safety Tip:Always wear safety glasses when working on your vehicle. Wear other personal protective equipment (PPE) when necessary, for example latex gloves or safety shoes.
o Tip: Before removing the radiator cap, squeeze the upper radiator hose to verify that the cooling system is not pressurized.

Step 2 Remove the radiator cap.

Step 3 Install cooling system pressure tester. Apply the pressure indicated on the radiator cap or in the owner’s manual.

Step 4 Inspect cooling system components for leaks.

Step 5 Place a drain pan under the radiator. Open drain valve or remove the lower radiator hose to drain cooling system.
o Tip: Depending on the vehicle, lifting the vehicle may be required to gain access to the lower radiator hose.

Step 6 Remove the drive belts or serpentine belt.

Step 7 Remove any hoses connected to water pump.

Step 8 Unbolt water pump from engine. Remove the water pump.

Step 9 Using a gasket scraper, clean the mating surface on the engine block.

Step 10 Install new water pump and new gasket. Tighten bolts to manufacturer’s specifications.
o Tip: You may want to use a light bead of silicone designed for water pumps.

Step 11 Re-install any hoses and belts that were removed.

Step 12 Re-install drain plug or lower radiator hose.
o Tip: Squeeze the radiator hose. If it feels soft you may want to replace the hose at this time. Always use new hose clamps.

Step 13 Refill radiator with a 50/50 mix of coolant and distilled water, then pressure test the cooling system and check for leaks.

Step 14 Fill overflow reservoir with same mixture.

Step 15 Leave the radiator cap off, start engine and let it idle. You should see the system“burping” bubbles of air. Refill the radiator to the top.
o Tip: Most air is expelled after a couple minutes of idling. Be cautious of potentially hot fluid overflowing.

Step 16 Install radiator cap.

Step 17 Road test vehicle, keep an eye on the engine temp gauge if vehicle runs hot, there still might be an air pocket in the cooling system. The cooling system should be topped off after vehicle has fully cooled down.

Good luck.

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how to change water pump? have pulled everything but the damper and want to make sure I am goingh in the right direction


How to Replace a Water Pump
DIY Complexity: Moderate
DIY Time: 3.5 hours

Parts:
1. Water Pump

Tools:
1. Screwdriver
2. Scraper
3. 3/8 in. Drive Ratchet
4. Cooling System Pressure Tester
5. Needle Nose Pliers
6. Socket Set
7. Radiator Hook Tool

Supplies:
1. Coolant
2. Silicone Sealant

Steps:
Step 1 * With the engine off and cold, open the hood and locate the vehicle’s water pump.
o Tip: Safety Tip:Always wear safety glasses when working on your vehicle. Wear other personal protective equipment (PPE) when necessary, for example latex gloves or safety shoes.
o Tip: Before removing the radiator cap, squeeze the upper radiator hose to verify that the cooling system is not pressurized.

Step 2 * Remove the radiator cap.

Step 3 * Install cooling system pressure tester. Apply the pressure indicated on the radiator cap or in the owner’s manual.

Step 4 * Inspect cooling system components for leaks.

Step 5 * Place a drain pan under the radiator. Open drain valve or remove the lower radiator hose to drain cooling system.
o Tip: Depending on the vehicle, lifting the vehicle may be required to gain access to the lower radiator hose.

Step 6 * Remove the drive belts or serpentine belt.

Step 7 * Remove any hoses connected to water pump.

Step 8 * Unbolt water pump from engine. Remove the water pump.

Step 9 * Using a gasket scraper, clean the mating surface on the engine block.

Step 10 * Install new water pump and new gasket. Tighten bolts to manufacturer’s specifications.
o Tip: You may want to use a light bead of silicone designed for water pumps.

Step 11 * Re-install any hoses and belts that were removed.

Step 12 * Re-install drain plug or lower radiator hose.
o Tip: Squeeze the radiator hose. If it feels soft you may want to replace the hose at this time. Always use new hose clamps.

Step 13 * Refill radiator with a 50/50 mix of coolant and distilled water, then pressure test the cooling system and check for leaks.

Step 14 * Fill overflow reservoir with same mixture.

Step 15 * Leave the radiator cap off, start engine and let it idle. You should see the system“burping” bubbles of air. Refill the radiator to the top.
o Tip: Most air is expelled after a couple minutes of idling. Be cautious of potentially hot fluid overflowing.

Step 16 * Install radiator cap.

Step 17 * Road test vehicle, keep an eye on the engine temp gauge if vehicle runs hot, there still might be an air pocket in the cooling system. The cooling system should be topped off after vehicle has fully cooled down.

Good luck (remember rated this help).

Mar 01, 2010 | 2004 Dodge Stratus

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