Changing the water pump

REMOVAL
The water pump on all models can be replaced without discharging the air conditioning system.
NOTE:It is normal for the water pump to weep a small amount of coolant from the weep hole (black stain at weep passage). Do not replace the water pump if this condition exists. Replace the water pump if a heavy deposit or a steady flow of engine coolant is evident on side of the cylinder block from the weep hole passage (shaft seal failure). Be sure to perform a thorough analysis before replacing water pump.

WARNING:Do not remove pressure cap with the system hot and pressurized. Serious burns from coolant can result.

Drain cooling system. (Refer to STANDARD PROCEDURE - COOLING SYSTEM DRAINING )
Remove radiator upper crossmember.
Mark bolt locations on the radiator upper crossmember.
Remove bolts attaching windshield washer bottle and speed servo, if equipped. (Refer to Fig. 41.)
Remove headlamp jackscrews both sides.
Remove fasteners attaching upper bumper fascia.
Remove bolts attaching the upper forward edge of upper radiator closure panel.
Remove bolts attaching upper radiator closure panel
Disconnect hood latch cable from hood latch.
Remove upper radiator closure panel from vehicle.
For replacement of upper radiator upper crossmember, remove hood latch, and any other hardware.
Remove radiator fan. (Refer to RADIATOR FAN ASSEMBLY )
Remove accessory drive belts. (Refer to DRIVE BELTS - 2.7L )
NOTE:The water pump is driven by the primary timing chain.

Remove the timing chain and all chain guides (Refer to TIMING BELT/CHAIN AND SPROCKETS ).
Remove bolts attaching water pump to block (Fig. 56 ).
Fig. 56: Removing Water Pump (2.7L)
Courtesy of DAIMLERCHRYSLER CORP.
Remove water pump and gasket

I think you best bet is to go out and buy an owneres manual or click at the link on the bottom of your post.

Sorry, can't see it from here. Was it running ok after the water pump was replaced? Which engine do you have? How do you know it lost oil pressure? If the warning light came on, did you stop the engine or keep driving? The engine will not seize up instantly when oil pressure is lost. Is it possible something else caused the engine to stop, then the oil light came on? It's proper for the oil light to turn on when the engine stalls.

Caradiodoc

You can find the most common reasons for this situation on our Car Repair Troubleshooting page, linked below..

https://www.2carpros.com/first_things/why_does_an_engine_backfire.htm

If you need further assistance just let me know..

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