Remove pump over heating

Remove the exhaust system from the catalytic converter back
Remove the exhaust pipe heat shield and the exhaust muffler heat shield
Remove the rear axle assembly.and so on..............

I am not aying that this is what I think it is but I found this on your year BMW

Some BMW, Volkswagen and Audi cars have a common problem that the water pump impeller becomes dislodged from the input shaft of the water pump leaving the water pump looking ok from the outside, but failed on the inside. If your car experiences this problem it will over heat rapidly much like a thermostat failure. For exact specific repair procedures for this repair visit our online repair manual page.




Failed BMW, VW, Audi Water Pump Troubleshooting Procedure

• Check Water Pump Operation - To troubleshoot this problem first drain about a half a gallon out of the cooling system, next remove the thermostat from the engine. With the thermostat out start the engine (stand back) coolant should be forced out of the thermostat port, if not the impeller has dislodged itself from the water pump input shaft and needs to be replaced. To replace the water pump finish draining the remainder of engine coolant, remove the serpentine belt and coolant hoses. Next remove the water pump mounting bolts and remove the water pump. Clean gasket surfaces and reinstall new water pump and reassemble. Refill with coolant and recheck system, top off engine coolant after it has re-cooled.

Water pump is driven by timing chain idler and is mounted on the rear of the timing chain housing. Disconnect the neg. battery cable. Drain cooling system. Disconnect oxygen sensor connector.
Remove upper exhaust manifould heat sheild. Remove exhaust manifold brace. Remove lower exhaust manifold heat sheild. Loosen manifold to exhaust manifold spring loaded nuts. Remove radiator outlet pipe to water pump coverbolts. Disconnect exhaust pipe from manifold.
Pull down on the exhaust pipe to disconnect it from exhaust manifold bolts. Disconnect outlet pipe from oil pan and transaxle. If equipped with manual tranaxle, remove exhaust maifold brace. Leave lower radiator hose attached and pull down on radiator out look pipe to disengauge from water pump. Leave outlet pipe hanging.
Lower vehicle. Remove exhaustmanifold to cylinder head nuts. Remove exhaust manifold to cylinder head nuts. Remove manifould. Remove timing chain front cover. Remove timing chain tensioner. Remove bolts bolts securing water pump cover to cylinder block. Remove water pump to timing chain housing nuts. Remove water pump attaching nuts. Remove water pump and cover assembly. Separate componets as necessary.
WHEN INSTALLING WATER PUMP MAKE SURE YOU FOLLOW THE TIGHTENING SEQUENCES THAT AFFECT SEALING. My frist one I messed up and broke the pump so becarful.
Installation
If cover was separated from body during removal, join this componets with a new gasket and hand tighten bolts. Apply bearing grease to splines of water pump drive. Set body and assemble into position.
Install and hand tighten bolts securing cover to cylinder block. Install and hand tighten bolts securing cover to cylinder block. Installand hand tighten nuts securing body to timing chain housing. Lubracate outlet pipe "O" ring with antifreeze. (I use RTV) Connect outlet pipe. Install and hand tighten bolts. Tighten bolts and nuts to specification in the following sequence. I'll ad the torque spec. at the end but this is where if you tighten out of order something will break.
pump assembly to timing chain housing nuts.
pump cover to pump body bolts
pump cover to cylinder block bolts (Bottom Bolt First)
outlet pipe to cover bolts
To complete installation reverse removel procedure.
Torque specs are 19 in. or 26mm all except water pump cover bolts which are 124 in or 14Nm
I never torque the bolts just make sure there done in the right order.

Either the ABS Module is bad or the Pump is bad--- Pump REMOVAL & INSTALLATION 1989-90 Models

1. Disconnect the negative battery cable. Depressurize the hydraulic accumulator. CAUTION
   Failure to depressurize the hydraulic accumulator, prior to performing this operation may result in personal injury and/or damage to the painted surfaces.
   
2. Remove the fresh air intake ducts.
3. Disconnect all electrical connectors to the pump motor.
4. Disconnect the high and low pressure hoses from the hydraulic assembly. Cap the spigot on the reservoir.
5. Disconnect the shift selection cable bracket from the transaxle and move it aside.
6. Loosen the nuts on the 2 studs that position the pump/motor to the transaxle differential cover.
7. Remove the retainer bolts that are used to mount hose bracket and pump/motor. The engine inlet water extension pipe is also held in position by these bolts. NOTE: Do not disturb the inlet water extension pipe, or engine coolant will leak out.
   
8. Disconnect the wiring harness retaining clip from the hose bracket.
9. Lift the pump/motor assembly off of the studs and out of the vehicle.
10. Remove the heat shield from the pump/motor, if equipped and discard. To install:
    
11. Place a new heat shield onto the pump/motor bracket, using fasteners provided.
12. Install the pump/motor assembly onto the studs.
13. Install the wiring harness retaining clip onto the hose bracket.
14. Install the retainer bolts to the hose bracket and pump/motor. Tighten securely.
15. Tighten the 2 nuts until secure.
16. Install the shift selection cable bracket onto the transaxle.
17. Connect the high and low pressure hoses to the hydraulic assembly and tighten to 13 ft. lbs. (17 Nm).
18. Attach all electrical connectors to the pump/motor.
19. Install the air ducts.
20. Readjust the gearshift linkage, if it was disturbed.
21. Connect the negative battery cable and check the assembly for proper operation.

1991-95 Models

1. Disconnect the negative battery cable. CAUTION
   Failure to depressurize the hydraulic accumulator, prior to performing this operation may result in personal injury and/or damage to the painted surfaces.
   
2. Depressurize the brake system.
3. Remove the fresh air intake ducts from the engine.
4. Remove the clip holding the high pressure line to the battery tray.
5. Disconnect the electrical connectors running across the engine compartment in the vicinity of the pump/motor high and low pressure hoses. One of these connectors is the one for the pump/motor assembly.
6. Disconnect the high and low pressure hoses from the hydraulic assembly. Cap or plug the reservoir fitting.
7. Disconnect the pump/motor electrical connector from the engine mount.
8. Remove the heat shield bolt from the front of the pump bracket. Remove the heat shield.
9. Lift the pump/motor assembly from the bracket and out of the vehicle. Fig. 1: The pump/motor assembly mounts to the top of the transaxle case and is covered by a heat shield
   To install:
   
10. Fit the pump motor assembly onto the bracket; install the heat shield and its retaining bolt.
11. Install the pump/motor electrical connector to the engine mount.
12. Connect the high and low pressure hose to the hydraulic assembly. Tighten the high pressure line to 145 inch lbs. (16 Nm). Tighten the hose clamp on the low pressure hose to 10 inch lbs. (1 Nm).
13. Connect the electrical connectors which were removed for access.
14. Install the high pressure line retaining clip to the battery tray if it was removed.
15. Install the fresh air intake ducts.
16. Bleed the brake system.

Hi. Normal installation would take 45 to 1 hour depends on your expertise. Here's the procedure on how to replace the power pump.

• TOOLS REQUIRED
• J-43651 Water Pump Sprocket Holding Tool

REMOVAL

1. Disconnect negative battery cable.
2. Remove air inlet tube and air cleaner assembly. Refer to "Air Cleaner Assembly Removal".
3. Drain coolant.

1. Remove exhaust manifold heat shield. IMPORTANT: Twist water feed pipe while pulling to remove it from water pump.

1. Remove thermostat and water feed assembly bolts.

1. Remove water pump sprocket access plate from front cover.

1. Install J-43651 water pump sprocket holding tool. IMPORTANT: Be sure to remove retaining bolt that is accessed from front of engine block.

1. Remove water pump retaining bolts.
2. Remove water pump assembly.

INSTALLATION

NOTICE: Prior to installing the water pump read the entire procedure. Pay special attention to avoid part damage and to ensure proper sealing.

1. Install water pump assembly.
2. Install water pump bolts. Initially finger tighten bolts

• Torque: 25 Nm (18 ft. lbs.)

1. Install the water feed tube.
2. Lubricate the feed tube O-ring with silicone gel lubricant.
3. Install water feed tube by twisting and pushing toward water pump. Take care not to tear or damage the O-ring.
4. Install thermostat housing to block bolts.

• Torque: 10 Nm (89 inch lbs.)

1. Install exhaust manifold heat shield.

1. Install air cleaner assembly and air inlet tube. Refer to "Air Cleaner Assembly Installation".
2. Connect negative battery cable.
3. Add coolant.

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Starter motor mounting-2.2L and 2.5L engines

- Working from under the vehicle, disconnect the starter motor heat shield clamp



View of the starter motor with the heat shield removed while looking over the crossmember

- Removing the starter motor mounting stud nut where the air pump tube bracket is also attached

1. Disconnect the negative battery cable.
2. Raise and safely support the vehicle. The starter can be removed by reaching over the crossmember.
3. Remove the heat shield and its clamps, if so equipped.
4. On the 2.2L and 2.5L engines, loosen the air pump tube at the exhaust manifold and move the tube bracket away from the starter.
5. Remove the electrical connections from the starter.
6. Remove the bolts attaching the starter to the flywheel housing and the rear bracket to the engine or transaxle.
7. Remove the starter from the engine.

To install:

1. Position the replacement starter against the mounting surface.
2. Install the mounting bolts.
3. Connect the starter wiring.
4. On 2.2L and 2.5L engines, position the air pump tube toward the starter, then connect the tube bracket to the exhaust manifold.
5. Install the heat shield and clamp.
6. Connect the negative battery cable.

Hope helped with this (remember rated this help) Good luck.

1. (This is for a 2.2L engine) If equipped with an automatic transmission, remove the exhaust manifold.
2. Drain the cooling system.
3. Remove the thermostat housing to water pump feed pipe bolts.
4. Remove the thermostat housing to water pump feed pipe.
5. Remove the thermostat.

Hii!!!! have you change the water pump?? ok some water pumps have the propeler in oposite direccion get one o just call to the dealer about this tipe of water pump.make sure when you call have ready the engine size. model year . and date factory made

replace your water pump. i had the same problem last week. the impeller was rusted away. now it heats really well. the pump isn't hard to replace at all. when you buy your new pump, draw around the pump on a piece of card board marking all your holes. when removing your old pump, remove the bolt and stick it in the pattern. now you will know where each bolt goes back. good luck, brotha bill

depends on the engine....a 2.4 requires the removal of the timing belt......on a 3.3 /3.8 the water pump is on the passenger side close to the fire wall.look for an orange or green coored residue in the vacinity of the pump....i would bet its leaking