How to replace the water pump on 1993 oldsmoblie achieva.

REMOVE OR DISCONNECT

1. Negative battery cable.
2. Drain and recover the coolant.

• Heater hose from thermostat housing for more complete coolant drain.

1. Oxygen sensor connector.
2. Upper and lower exhaust manifold heat shields.
3. Exhaust manifold brace to manifold bolt.
4. Break loose the manifold to exhaust pipe spring loaded nuts.
1. Radiator outlet pipe assembly to coolant pump cover bolts (2).
2. Raise vehicle.
3. Exhaust pipe from exhaust manifold.
4. Pull down and back on the exhaust pipe to disengage it from the exhaust manifold bolts.
5. Radiator outlet pipe from oil pan and transaxle.
• Leave the lower radiator hose attached and pull down on the radiator outlet pipe to disengage it from the coolant pump. Leave the radiator outlet pipe hang.
1. Lower vehicle.
2. Exhaust manifold to cylinder head retaining nuts.
3. Exhaust manifold, seals and gaskets.
4. Coolant pump cover to cylinder block bolts.
5. Coolant pump assembly to timing chain housing nuts (3).
6. Coolant pump and cover assembly.
7. Coolant pump cover to coolant pump assembly bolts (5).

1. Coolant pump cover to coolant pump assembly and install bolts hand tight.
2. Lubricate splines of coolant pump drive with Chassis Grease GM P/N 1051344 or equivalent and install pump and cover assembly.
3. Cover to block bolts hand tight.
4. Pump to chain housing nuts hand tight.
5. Lube "0" ring on radiator outlet pipe with an anti-freeze solution and slide pipe into coolant pump cover install bolts hand tight.
6. With all gaps closed, torque in sequence as follows:

1. Pump assembly to chain housing nuts and torque to 26 Nm (19 lbs. in.)
2. Pump cover to pump assembly and torque 14 Nm (124 lbs. in.) .
3. Cover to block, bottom bolt first and torque to 26 Nm (19 lbs. in.) .
4. Radiator outlet pipe assembly to cover and torque to 14 Nm ( 124 lbs. in.)

1. Exhaust manifold and new gaskets. Refer to Exhaust Manifold. See: Exhaust System\Exhaust Manifold
2. Exhaust manifold to cylinder head retaining nuts. Follow the tightening sequence and tighten to 42 Nm (31 lbs ft) .
3. Raise vehicle.
4. Index exhaust manifold bolts into exhaust pipe flange.
5. Exhaust pipe to exhaust manifold. Tighten the manifold to exhaust pipe nuts to 26 Nm (19 lbs. ft.) .
6. Turn both bolts in evenly to avoid cocking the exhaust pipe and binding the bolts. Turn bolts in until fully seated.
7. Radiator outlet pipe to transaxle and oil pan.
8. Lower vehicle.
9. Exhaust manifold brace to manifold bolt and torque to 54 Nm (40 lbs. ft.) .
10. Tighten the manifold to exhaust pipe nuts to 26 Nm (19 lbs. ft.) .
11. Upper and lower heat shields.
12. Oxygen sensor connector.
13. Fill radiator with coolant until coolant reaches heater hose coolant outlet then install hose (this assists with complete cylinder block fill) then continue fill.
14. Negative battery cable.
15. Start engine.
16. Inspect for leaks.

2.4 enigine is the harder of the 3 enignes. it will need a timing chain to be removed and a coolant tube in the back of the engine to be removed. this job on the book calls for almost 7 hours.

if its 3.3 or 3100 its alot easier.

3100 is just 4 10mm pulley bolts and 5 or 6 small 8mm water pump bolts.

3.3 is alittle more work, but same concept as 3100 engine. more owkr only cause its in a tighter area.

good luck,
michael