Water pump repair

That fuse is under the hood in the main fuse center.

Lincoln Navigator 1997 2002 WorkSHOP Service repair manual Download



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1. d/c neg batt cable
2. remove fan shroud top section or you may have to remove whole thing
3. block fan blades so they can not turn.say a piece of wood
4. remove bolts from front of fan 4 or 6 bolts
5. remove fan blades

Hope this helps mike

Should scan your car's computer for proper diagnostics. Look fro proper service who has the scanner, Might save you money replacing innecessarily parts

RADIATOR
Removal
1. Disconnect battery ground cable.
2. Drain engine cooling system as described.
3. Remove engine air cleaner.
4. Remove upper radiator hose from water bypass tube.
5. Remove radiator overflow hose from radiator and fan shroud.
6. Remove transmission oil cooler line from oil cooler inlet fitting.
7. Remove nuts retaining A/C condenser core to the radiator.
8. Disconnect engine control sensor wiring from the auxiliary electric cooling fan motors and the CCRM.
9. Raise vehicle on hoist.
10. Remove splash shield from lower radiator support and front sub-frame.
11. Remove lower radiator hose from radiator.
12. Remove oil transmission cooler line from oil cooler outlet fitting on radiator.
13. Remove retaining screws for power steering/transaxle oil cooler and position cooler aside.
14. Support fan shroud, radiator and A/C condenser core with a suitable jackstand. Remove lower radiator
support.
15. Position jackstand aside and carefully remove radiator and fan shroud.
16. Remove two retaining bolts for fan shroud at top of radiator and remove fan shroud from radiator.
17. Remove upper radiator hose from radiator.
NOTE: Loosen transmission oil cooler lines while securely holding radiator
connector with a back-up wrench.
NOTE: Loosen transmission oil cooler lines while securely holding radiator
connector with a back-up wrench.
18. Remove Radiator

If your talking about a water/coolant pump on the engine. Replace the pump. It's not supposed to fall apart . Same with the fan for the radiator.

Here's a link on replacing your spark plugs. Repair Guides Spark Plugs Wires Spark Plugs AutoZone com Here's a link to the coils. Repair Guides Distributorless Ignition System Ignition Coils AutoZone...

According with the Section 7 Cooling System from de Repair Manual, check this diagram (click image for zoom)...

Fig. 6: Water pump mounting bolt locations

To removal...

1. Disconnect the negative battery cable.
   
2. Open the radiator valve and drain the cooling system.
   
3. Remove the cooling fan and shroud as an assembly.
   
4. Remove the accessory drive belt.
   
5. Remove the water pump pulley from the hub.
   
6. Disconnect the hoses from the water pump.

Keep in mind that Grand Cherokee have two sizes engines 4.0 and 5.2L (this last engine is the mine)...






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You'll need an OBD II scan tool to clear them. A performance cat replacement is fine. I would replace it, due to the fact that alot of times the insides of the converter break apart inside.

THE 3.0 ENGINE YOU HAVE TO REMOVE THE UPPER INTAKE MANIFOLD .REMOVE VALVE COVERS REMOVE ACESSORY DRIVE BELT.REMOVE THE POWER STEERING PUMP.REMOVE ALTERNATOR REMOVE WATER PUMP .REMOVE AC COMPRESSOR AND BRACKET .REMOVE CRANKSHAFT PULLEY REMOVE OIL PAN REMOVE OIL PUMP SCREEN AND THE TUBE REMOVE FRONT COVER REMOVE TIMING CHAINS REMOVE CRANKSHAFT TIMING GEARS REMOVE OIL PUMP.WHEN INSTALLING NEW OIL PUMP AND OIL PUMP SCREEN AND TUBE TORQUE BOTH 89 INCH POUNDS. THE 3.9 ENGINE REMOVE THE CRANKSHAFT PULLEY REMOVE FRONT COVER REMOVE THE PRIMARY TIMING CHAINS REMOVE OIL PUMP MOUNTING BOLTS REMOVE OIL PUMP.INSTALLING NEW OIL PUMP TORQUE BOLTS TO 53 INCH POUNDS. WARNING YOU NEED A REPAIR MANUAL IN ORDER TO RELINE TIMING MARKS ON CAMSHAFTS AND CRANKSHAFT.