Question about 1993 Audi 90

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Over heating The engine overheats quickly and it appears some water does come out of the exhaust pipe when this occurs. Mine is a 93 S with the standard V6.

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  • denssab Dec 08, 2008

    Engine overheats, no water in block, heater does not work. My father in law seem to think its the thermostat

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You have bad head gaskets...its only going to get worse get it to a shop before it goes all the way out

Posted on Oct 21, 2008

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2 Answers

My 2005 jeep liberty over heats, any solutions


check to see if you have a viscous fan hub and if so then replace it . Check when the overheating occurs If it is at stop lights but cools down when travelling. It is the hub. If it overheats when going slow and under load it will be the hub. If it overheats when travelling fast then check the radiator for core blockage and have a compression test done to check for head gasket / cracks Run fault codes and check for blocked exhaust system --cat converter)

Jul 02, 2014 | 2005 Jeep Liberty

1 Answer

93 toyota pick up overheating


I suspect a viscous fan hub fault. It slips excessively and will not draw air through the radiator in sufficient quantities to cool the engine..( That is if you have a viscous hub). Toyota hubs are well known as having insufficient fluid in them to do the job properly. ON mine it was possible to spin the fan backwards while the engine was running. Otherwise check the fan sensors and relays.

May 18, 2013 | Toyota Pickup Cars & Trucks

1 Answer

93 camry overheats, white exhaust, no heat


you most likely have a blown head gasket on the exhaust side of the gasket where the water goes into the cylinder and not the oil! as far as no heat, have you checked your water level? if the head gasket is blown and the water is going out the exhaust then the water level would be low which would cause the car to not produce heat

Jan 14, 2013 | 1993 Toyota Camry V6

1 Answer

Diragram on how to change the water pump on a 1995 z24 cavalier 2.3


Check this procedure, according with the repair guide for...

2.3L and 2.4L Engines
(see Figure 9)
  1. Disconnect the negative battery cable
  2. Detach the oxygen sensor connector.
  3. Properly drain the engine coolant into a suitable container. Remove the heater hose from the thermostat housing for more complete coolant drain.
  4. Remove upper exhaust manifold heat shield.
  5. Remove the bolt that attaches the exhaust manifold brace to the manifold.
  6. Remove the lower exhaust manifold heat shield.
  7. Break loose the manifold to exhaust pipe spring loaded bolts using a 13mm box wrench.
  8. Raise and safely support the vehicle.
It is necessary to relieve the spring pressure from 1 bolt prior to removing the second bolt. If the spring pressure is not relieved, it will cause the exhaust pipe to twist and bind up the bolt as it is removed.
  1. Unfasten the two radiator outlet pipe-to-water pump cover bolts.
  2. Remove the manifold to exhaust pipe bolts from the exhaust pipe flange as follows:
    1. Unscrew either bolt clockwise 4 turns.
    2. Remove the other bolt.
    3. Remove the first bolt.
On the 2.4L engines, DO NOT rotate the flex coupling more than 4° or damage may occur.Pull down and back on the exhaust pipe to disengage it from the exhaust manifold bolts.
  1. Remove the radiator outlet pipe from the oil pan and transaxle. If equipped with a manual transaxle, remove the exhaust manifold brace. Leave the lower radiator hose attached and pull down on the outlet pipe to remove it from the water pump. Leave the radiator outlet pipe hang.
  2. Carefully lower the vehicle.
  3. Unfasten the exhaust manifold-to-cylinder head retaining nuts, then remove the exhaust manifold, seals and gaskets.
  4. For the 2.4L engine, remove the front timing chain cover and the chain tensioner. For details, please refer to the procedure located later in this section.
  5. Unfasten the water pump-to-cylinder block bolts. Remove the water pump-to-timing chain housing nuts. Remove the water pump and cover mounting bolts and nuts. Remove the water pump and cover as an assembly, then separate the two pieces.

zjlimited_2033.jpg

Fig. 9: Water pump and cover mounting - 2.3L and 2.4L engines (click over image for zoom)

To install:

  1. Thoroughly clean and dry all mounting surfaces, bolts and bolt holes. Using a new gasket, install the water pump to the cover and tighten the bolts finger-tight.
  2. Lubricate the splines of the water pump with clean grease and install the assembly to the engine using new gaskets. Install the mounting bolts and nuts finger-tight.
  3. Lubricate the radiator outlet pipe O-ring with antifreeze and slid the pipe onto the water pump cover. Install the bolts finger-tight.
  4. With all gaps closed, tighten the bolts, in the following sequence, to the proper values:
    1. Pump assembly-to-chain housing nuts-19 ft. lbs. (26 Nm).
    2. Pump cover-to-pump assembly-106 inch lbs. (12 Nm).
    3. Cover-to-block, bottom bolt first-19 ft. lbs. (26 Nm).
    4. Radiator outlet pipe assembly-to-pump cover-125 inch lbs. (14 Nm).
  5. Using new gaskets, install the exhaust manifold. Make sure to following the tightening sequence and torque specifications given in the exhaust manifold procedure located in this section.
  6. Raise and safely support the vehicle.
  7. Index the exhaust manifold bolts into the exhaust pipe flange.
  8. Connect the exhaust pipe to the manifold. Install the exhaust pipe flange bolts evenly and gradually to avoid binding. Turn the bolts in until fully seated.
  9. Connect the radiator outlet pipe to the transaxle and oil pan. Install the exhaust manifold brace, if removed.
  10. On the 2.4L engine, install the timing chain tensioner and front cover.
  11. Install the lower heat shield.
  12. Carefully lower the vehicle.
  13. Fasten the bolt that attaches the exhaust manifold brace to the manifold.
  14. Tighten the manifold-to-exhaust pipe nuts to specification.
  15. Install the upper heat shield.
  16. Attach the oxygen sensor connector.
  17. Fill the radiator with coolant until it comes out the heater hose outlet at the thermostat housing. Then connect the heater hose. Leave the radiator cap off.
  18. Connect the negative battery cable, then start the engine. Run the vehicle until the thermostat opens, fill the radiator and recovery tank to their proper levels, then turn the engine off.
  19. Once the vehicle has cooled, recheck the coolant level.

Hope helps; remember to rating this answer and leave a testimonial comment. Thank you for using FixYa.

Oct 13, 2011 | 1995 Chevrolet Cavalier

1 Answer

WHAT ARE THE TORQUE SPECS FOR A WATER PUMP ON A 2003 CHEVY MALIBU


Water Pump REMOVAL & INSTALLATION CAUTION
Never open, service or drain the radiator or cooling system when hot; serious burns can occur from the steam and hot coolant. Also, when draining engine coolant, keep in mind that cats and dogs are attracted to ethylene glycol antifreeze and could drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantities. Always drain coolant into a sealable container. Coolant should be reused unless it is contaminated or is several years old. 2.4L Engine
  1. Disconnect the negative battery cable
  2. Detach the Oxygen (O2) sensor electrical connector.
  3. Properly drain the engine coolant into a suitable container. Remove the heater hose from the thermostat housing for a more complete coolant drain.
  4. Remove upper exhaust manifold heat shield.
  5. Remove the bolt that attaches the exhaust manifold brace to the manifold.
  6. Remove the lower exhaust manifold heat shield.
  7. Break the manifold-to-exhaust pipe spring loaded bolts loose using a 13mm box wrench.
  8. Raise and safely support the vehicle. NOTE: It is necessary to relieve the spring pressure from 1 bolt prior to removing the second bolt. If the spring pressure is not relieved, it will cause the exhaust pipe to twist and bind up the bolt as it is removed.
  9. Unfasten the two radiator outlet pipe-to-water pump cover bolts.
  10. Remove the manifold to exhaust pipe bolts from the exhaust pipe flange as follows:
    1. Unscrew either bolt clockwise 4 turns.
    2. Remove the other bolt.
    3. Remove the first bolt. NOTE: DO NOT rotate the flex coupling more than 4°or damage may occur.
  11. Pull down and back on the exhaust pipe to disengage it from the exhaust manifold bolts.
  12. Remove the radiator outlet pipe from the oil pan and transaxle. Leave the lower radiator hose attached and pull down on the outlet pipe to remove it from the water pump. Leave the radiator outlet pipe hang.
  13. Carefully lower the vehicle.
  14. Unfasten the exhaust manifold-to-cylinder head retaining nuts, then remove the exhaust manifold, seals and gaskets.
  15. Remove the front timing chain cover and the chain tensioner. For details, please refer to the procedure located later in this section.
  16. Unfasten the water pump-to-cylinder block bolts. Remove the water pump-to-timing chain housing nuts. Remove the water pump and cover mounting bolts and nuts. Remove the water pump and cover as an assembly, then separate the two pieces. Fig. 1: Water pump and cover mounting - 2.4L engine 87953070.gif
    To install:
  17. Thoroughly clean and dry all mounting surfaces, bolts and bolt holes. Using a new gasket, install the water pump to the cover and tighten the bolts finger-tight.
  18. Lubricate the splines of the water pump with clean grease and install the assembly to the engine using new gaskets. Install the mounting bolts and nuts finger-tight.
  19. Lubricate the radiator outlet pipe O-ring with antifreeze and slide the pipe onto the water pump cover. Install the bolts finger-tight.
  20. With all gaps closed, tighten the bolts, in the following sequence, to the proper values:
    1. Pump assembly-to-chain housing nuts:19 ft. lbs. (26 Nm).
    2. Pump cover-to-pump assembly: 106 inch lbs. (12 Nm).
    3. Cover-to-block, bottom bolt first: 19 ft. lbs. (26 Nm).
    4. Radiator outlet pipe assembly-to-pump cover: 125 inch lbs. (14 Nm).
  21. Using new gaskets, install the exhaust manifold. Make sure to following the tightening sequence and torque specifications given in the exhaust manifold procedure located in this section.
  22. Raise and safely support the vehicle.
  23. Index the exhaust manifold bolts into the exhaust pipe flange.
  24. Connect the exhaust pipe to the manifold. Install the exhaust pipe flange bolts evenly and gradually to avoid binding. Turn the bolts in until fully seated.
  25. Connect the radiator outlet pipe to the transaxle and oil pan.
  26. Install the timing chain tensioner and front cover.
  27. Install the lower heat shield.
  28. Carefully lower the vehicle.
  29. Fasten the bolt that attaches the exhaust manifold brace to the manifold.
  30. Tighten the manifold-to-exhaust pipe nuts to specification.
  31. Install the upper heat shield.
  32. Attach the oxygen sensor connector.
  33. Fill the radiator with coolant until it comes out the heater hose outlet at the thermostat housing. Then connect the heater hose. Leave the radiator cap off.
  34. Connect the negative battery cable, then start the engine. Run the vehicle until the thermostat opens, fill the radiator and recovery tank to their proper levels, then turn the engine OFF.
  35. Once the vehicle has cooled, recheck the coolant level, then install the radiator cap.
3.1L Engine
  1. Disconnect the negative battery cable.
  2. Properly drain the cooling system into a suitable container.
  3. Loosen, but do not remove, the water pump pulley bolts.
  4. Remove the serpentine belt.
  5. Unfasten the water pump pulley bolts, then remove the pulley.
  6. Remove the five water pump mounting bolts, then remove the water pump. To install: Fig. 2: View of the water pump mounting and bolt tightening specifications - 3.1L engine shown 86883115.gif

  7. Clean all the gasket surfaces completely.
  8. Apply a thin bead of sealer around the outside edge of the water pump along the gasket sealing area, then install the gasket onto the water pump.
  9. Position the water pump on the engine, then tighten the water pump mounting bolts to 89 inch lbs. (10 Nm).
  10. Install the water pump pulley and finger-tighten the pulley bolts.
  11. Install the serpentine belt.
  12. Tighten the water pump pulley bolts to 18 ft. lbs. (25 Nm).
  13. Fill the cooling system.
  14. Connect the negative battery cable, then start the engine. Let the engine run until it reaches normal operating temperature, then check for leaks and coolant level. Add coolant, if necessary, then turn the engine OFF.
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Nov 03, 2010 | 2003 Chevrolet Malibu

1 Answer

How do I replace a water pump on a 1999 malibou with a quad 4?


Water Pump REMOVAL & INSTALLATION CAUTION
Never open, service or drain the radiator or cooling system when hot; serious burns can occur from the steam and hot coolant. Also, when draining engine coolant, keep in mind that cats and dogs are attracted to ethylene glycol antifreeze and could drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantities. Always drain coolant into a sealable container. Coolant should be reused unless it is contaminated or is several years old. 2.4L Engine
  1. Disconnect the negative battery cable
  2. Detach the Oxygen (O2) sensor electrical connector.
  3. Properly drain the engine coolant into a suitable container. Remove the heater hose from the thermostat housing for a more complete coolant drain.
  4. Remove upper exhaust manifold heat shield.
  5. Remove the bolt that attaches the exhaust manifold brace to the manifold.
  6. Remove the lower exhaust manifold heat shield.
  7. Break the manifold-to-exhaust pipe spring loaded bolts loose using a 13mm box wrench.
  8. Raise and safely support the vehicle. NOTE: It is necessary to relieve the spring pressure from 1 bolt prior to removing the second bolt. If the spring pressure is not relieved, it will cause the exhaust pipe to twist and bind up the bolt as it is removed.
  9. Unfasten the two radiator outlet pipe-to-water pump cover bolts.
  10. Remove the manifold to exhaust pipe bolts from the exhaust pipe flange as follows:
    1. Unscrew either bolt clockwise 4 turns.
    2. Remove the other bolt.
    3. Remove the first bolt. NOTE: DO NOT rotate the flex coupling more than 4°or damage may occur.
  11. Pull down and back on the exhaust pipe to disengage it from the exhaust manifold bolts.
  12. Remove the radiator outlet pipe from the oil pan and transaxle. Leave the lower radiator hose attached and pull down on the outlet pipe to remove it from the water pump. Leave the radiator outlet pipe hang.
  13. Carefully lower the vehicle.
  14. Unfasten the exhaust manifold-to-cylinder head retaining nuts, then remove the exhaust manifold, seals and gaskets.
  15. Remove the front timing chain cover and the chain tensioner. For details, please refer to the procedure located later in this section.
  16. Unfasten the water pump-to-cylinder block bolts. Remove the water pump-to-timing chain housing nuts. Remove the water pump and cover mounting bolts and nuts. Remove the water pump and cover as an assembly, then separate the two pieces. Fig. 1: Water pump and cover mounting - 2.4L engine 87953070.gif
    To install:
  17. Thoroughly clean and dry all mounting surfaces, bolts and bolt holes. Using a new gasket, install the water pump to the cover and tighten the bolts finger-tight.
  18. Lubricate the splines of the water pump with clean grease and install the assembly to the engine using new gaskets. Install the mounting bolts and nuts finger-tight.
  19. Lubricate the radiator outlet pipe O-ring with antifreeze and slide the pipe onto the water pump cover. Install the bolts finger-tight.
  20. With all gaps closed, tighten the bolts, in the following sequence, to the proper values:
    1. Pump assembly-to-chain housing nuts:19 ft. lbs. (26 Nm).
    2. Pump cover-to-pump assembly: 106 inch lbs. (12 Nm).
    3. Cover-to-block, bottom bolt first: 19 ft. lbs. (26 Nm).
    4. Radiator outlet pipe assembly-to-pump cover: 125 inch lbs. (14 Nm).
  21. Using new gaskets, install the exhaust manifold. Make sure to following the tightening sequence and torque specifications given in the exhaust manifold procedure located in this section.
  22. Raise and safely support the vehicle.
  23. Index the exhaust manifold bolts into the exhaust pipe flange.
  24. Connect the exhaust pipe to the manifold. Install the exhaust pipe flange bolts evenly and gradually to avoid binding. Turn the bolts in until fully seated.
  25. Connect the radiator outlet pipe to the transaxle and oil pan.
  26. Install the timing chain tensioner and front cover.
  27. Install the lower heat shield.
  28. Carefully lower the vehicle.
  29. Fasten the bolt that attaches the exhaust manifold brace to the manifold.
  30. Tighten the manifold-to-exhaust pipe nuts to specification.
  31. Install the upper heat shield.
  32. Attach the oxygen sensor connector.
  33. Fill the radiator with coolant until it comes out the heater hose outlet at the thermostat housing. Then connect the heater hose. Leave the radiator cap off.
  34. Connect the negative battery cable, then start the engine. Run the vehicle until the thermostat opens, fill the radiator and recovery tank to their proper levels, then turn the engine OFF.
  35. Once the vehicle has cooled, recheck the coolant level, then install the radiator cap.

Oct 26, 2010 | 1999 Chevrolet Malibu

2 Answers

How to replace water pump on 97 pontiac sunfire 2.4


PLEASE DON'T FORGET TO RATE! THANKS! 2.3L & 2.4L Engines
  1. Disconnect the negative battery cable
  2. Detach the oxygen sensor connector.
  3. Properly drain the engine coolant into a suitable container. Remove the heater hose from the thermostat housing for more complete coolant drain.
  4. Remove upper exhaust manifold heat shield.
  5. Remove the bolt that attaches the exhaust manifold brace to the manifold.
  6. Remove the lower exhaust manifold heat shield.
  7. Break loose the manifold to exhaust pipe spring loaded bolts using a 13mm box wrench.
  8. Raise and safely support the vehicle.
It is necessary to relieve the spring pressure from 1 bolt prior to removing the second bolt. If the spring pressure is not relieved, it will cause the exhaust pipe to twist and bind up the bolt as it is removed.
  1. Unfasten the two radiator outlet pipe-to-water pump cover bolts.
  2. Remove the manifold to exhaust pipe bolts from the exhaust pipe flange as follows:
    1. Unscrew either bolt clockwise 4 turns.
    2. Remove the other bolt.
    3. Remove the first bolt.
On the 2.4L engines, DO NOT rotate the flex coupling more than 4° or damage may occur.
  1. Pull down and back on the exhaust pipe to disengage it from the exhaust manifold bolts.
  2. Remove the radiator outlet pipe from the oil pan and transaxle. If equipped with a manual transaxle, remove the exhaust manifold brace. Leave the lower radiator hose attached and pull down on the outlet pipe to remove it from the water pump. Leave the radiator outlet pipe hang.
  3. Carefully lower the vehicle.
  4. Unfasten the exhaust manifold-to-cylinder head retaining nuts, then remove the exhaust manifold, seals and gaskets.
  5. For the 2.4L engine, remove the front timing chain cover and the chain tensioner. For details, please refer to the procedure located later in this section.
  6. Unfasten the water pump-to-cylinder block bolts. Remove the water pump-to-timing chain housing nuts. Remove the water pump and cover mounting bolts and nuts. Remove the water pump and cover as an assembly, then separate the two pieces.

01add58.gif
Water pump and cover mounting-2.3L and 2.4L engines

To install:
  1. Thoroughly clean and dry all mounting surfaces, bolts and bolt holes. Using a new gasket, install the water pump to the cover and tighten the bolts finger-tight.
  2. Lubricate the splines of the water pump with clean grease and install the assembly to the engine using new gaskets. Install the mounting bolts and nuts finger-tight.
  3. Lubricate the radiator outlet pipe O-ring with antifreeze and slid the pipe onto the water pump cover. Install the bolts finger-tight.
  4. With all gaps closed, tighten the bolts, in the following sequence, to the proper values:
    1. Pump assembly-to-chain housing nuts-19 ft. lbs. (26 Nm).
    2. Pump cover-to-pump assembly-106 inch lbs. (12 Nm).
    3. Cover-to-block, bottom bolt first-19 ft. lbs. (26 Nm).
    4. Radiator outlet pipe assembly-to-pump cover-125 inch lbs. (14 Nm).
  5. Using new gaskets, install the exhaust manifold. Make sure to following the tightening sequence and torque specifications given in the exhaust manifold procedure located in this section.
  6. Raise and safely support the vehicle.
  7. Index the exhaust manifold bolts into the exhaust pipe flange.
  8. Connect the exhaust pipe to the manifold. Install the exhaust pipe flange bolts evenly and gradually to avoid binding. Turn the bolts in until fully seated.
  9. Connect the radiator outlet pipe to the transaxle and oil pan. Install the exhaust manifold brace, if removed.
  10. On the 2.4L engine, install the timing chain tensioner and front cover.
  11. Install the lower heat shield.
  12. Carefully lower the vehicle.
  13. Fasten the bolt that attaches the exhaust manifold brace to the manifold.
  14. Tighten the manifold-to-exhaust pipe nuts to specification.
  15. Install the upper heat shield.
  16. Attach the oxygen sensor connector.
  17. Fill the radiator with coolant until it comes out the heater hose outlet at the thermostat housing. Then connect the heater hose. Leave the radiator cap off.
  18. Connect the negative battery cable, then start the engine. Run the vehicle until the thermostat opens, fill the radiator and recovery tank to their proper levels, then turn the engine off.
  19. Once the vehicle has cooled, recheck the coolant level.

Sep 13, 2010 | Pontiac Sunfire Cars & Trucks

4 Answers

I have a 1994 Gmc Sonoma that overheats and i dont know why. Today, i started it up and it runs perfect. My temp. gauge doesnt move and i replaced the thermostat about a week ago. Also when i parked it...


could have a blown head gasket or cracked head or worse case scenario, a cracked block letting oil into the combustion chamber and out the exhaust. if it is letting coolant into the oil then pull the dipstick and there should be a milky white look to it where the oil tried to mix with the coolant. but its normal to have water alone drip from the drain hole in the exhaust from condesation. for every gallon of fuel your vehicle uses, it produces about a gallon of water thru the exhaust

Oct 24, 2009 | GMC Sonoma Cars & Trucks

2 Answers

Need the step by step instructions and pictures on how to replace an water pump on an 2002 Oldsmobile Alero 2.4L


Removal & Installation

2.2L Engine
  1. Before servicing the vehicle, refer to the precautions section.
  2. Disconnect the negative battery cable.
  3. Drain the engine coolant.
  4. Remove or disconnect the following:
    Exhaust manifold, if equipped with n automatic transaxle Right front wheel Splash shield Water pump sprocket access plate from the timing cover

    fcd00e0.jpg

    Fig. Remove the water pump sprocket access plate from the timing cover -2.2L engine
  5. Attach Water Pump Sprocket Holding Tool J 43651to the sprocket using the access plate bolts to secure the tool to the engine front cover.
    Sprocket to water pump bolts Engine block to water pump bolt Engine front cover to water pump bolt Thermostat housing to water pump feed pipe 2 water pump to engine block bolts Water pump

    30965cd.jpg

    Fig. Water pump mounting-2.2L engine
To install:
  1. Use a threaded stud in the water pump hub to align the hub to the water pump sprocket.
    Water pump and bolts Thermostat housing to water pump feed pipe Engine front cover bolt and engine block to water pump bolt. Tighten the bolts to 15 ft. lbs. (20 Nm) 2 of the water pump sprocket to water pump bolts
  2. Remove the threaded stud.
    Last water pump sprocket to water pump bolt and tighten the sprocket bolts to 89 inch lbs. (10 Nm).
  3. Remove the tool.
    Water pump sprocket access plate to the timing cover and tighten the bolts to 89 inch lbs. (10 Nm) Splash shield Right front wheel Exhaust manifold, if removed
  4. Fill the cooling system.
  5. Connect the negative battery cable.
2.4L Engine
  1. Before servicing the vehicle, refer to the precautions section.
  2. Disconnect the negative battery cable.
  3. Drain the cooling system.
  4. Remove or disconnect the following:
    WARNING Do not rotate the flex coupling more than 4 degrees or damage may occur. Oxygen Sensor (O 2 S) electrical connector Exhaust manifold heat shield Coolant inlet housing bolt through the exhaust manifold Exhaust manifold brace-to-manifold bolt Manifold-to-exhaust pipe studs Coolant inlet housing-to-water pump cover bolt Exhaust pipe from the exhaust manifold by pulling it downward Coolant inlet pipe from the oil pan Brake vacuum pipe from the camshaft housing Exhaust manifold from the cylinder head Heater hose from the heater outlet pipe Timing chain cover and tensioner Water pump cover-to-engine bolts 3 water pump-to-timing chain housing nuts Water pump and cover assembly Water pump cover from the pump

    f9cdfa8.jpg

    Fig. Exploded view of the water pump mounting-2.4L engine
continue...

Oct 22, 2009 | 2002 Oldsmobile Alero

1 Answer

Replacing the water pump


2.4L Engine
  1. Disconnect the negative battery cable
  2. Detach the Oxygen (O2) sensor electrical connector.
  3. Properly drain the engine coolant into a suitable container. Remove the heater hose from the thermostat housing for a more complete coolant drain.
  4. Remove upper exhaust manifold heat shield.
  5. Remove the bolt that attaches the exhaust manifold brace to the manifold.
  6. Remove the lower exhaust manifold heat shield.
  7. Break the manifold-to-exhaust pipe spring loaded bolts loose using a 13mm box wrench.
  8. Raise and safely support the vehicle.

NOTE It is necessary to relieve the spring pressure from 1 bolt prior to removing the second bolt. If the spring pressure is not relieved, it will cause the exhaust pipe to twist and bind up the bolt as it is removed.
  1. Unfasten the two radiator outlet pipe-to-water pump cover bolts.
  2. Remove the manifold to exhaust pipe bolts from the exhaust pipe flange as follows:
    1. Unscrew either bolt clockwise 4 turns.
    2. Remove the other bolt.
    3. Remove the first bolt.

NOTE DO NOT rotate the flex coupling more than 4° or damage may occur.
  1. Pull down and back on the exhaust pipe to disengage it from the exhaust manifold bolts.
  2. Remove the radiator outlet pipe from the oil pan and transaxle. Leave the lower radiator hose attached and pull down on the outlet pipe to remove it from the water pump. Leave the radiator outlet pipe hang.
  3. Carefully lower the vehicle.
  4. Unfasten the exhaust manifold-to-cylinder head retaining nuts, then remove the exhaust manifold, seals and gaskets.
  5. Remove the front timing chain cover and the chain tensioner. For details, please refer to the procedure located later in this section.
  6. Unfasten the water pump-to-cylinder block bolts. Remove the water pump-to-timing chain housing nuts. Remove the water pump and cover mounting bolts and nuts. Remove the water pump and cover as an assembly, then separate the two pieces.
87953070.gif Water pump and cover mounting—2.4L engine
Click to Enlarge
To install:
  1. Thoroughly clean and dry all mounting surfaces, bolts and bolt holes. Using a new gasket, install the water pump to the cover and tighten the bolts finger-tight.
  2. Lubricate the splines of the water pump with clean grease and install the assembly to the engine using new gaskets. Install the mounting bolts and nuts finger-tight.
  3. Lubricate the radiator outlet pipe O-ring with antifreeze and slide the pipe onto the water pump cover. Install the bolts finger-tight.
  4. With all gaps closed, tighten the bolts, in the following sequence, to the proper values:
    1. Pump assembly-to-chain housing nuts:19 ft. lbs. (26 Nm).
    2. Pump cover-to-pump assembly: 106 inch lbs. (12 Nm).
    3. Cover-to-block, bottom bolt first: 19 ft. lbs. (26 Nm).
    4. Radiator outlet pipe assembly-to-pump cover: 125 inch lbs. (14 Nm).
  5. Using new gaskets, install the exhaust manifold. Make sure to following the tightening sequence and torque specifications given in the exhaust manifold procedure located in this section.
  6. Raise and safely support the vehicle.
  7. Index the exhaust manifold bolts into the exhaust pipe flange.
  8. Connect the exhaust pipe to the manifold. Install the exhaust pipe flange bolts evenly and gradually to avoid binding. Turn the bolts in until fully seated.
  9. Connect the radiator outlet pipe to the transaxle and oil pan.
  10. Install the timing chain tensioner and front cover.
  11. Install the lower heat shield.
  12. Carefully lower the vehicle.
  13. Fasten the bolt that attaches the exhaust manifold brace to the manifold.
  14. Tighten the manifold-to-exhaust pipe nuts to specification.
  15. Install the upper heat shield.
  16. Attach the oxygen sensor connector.
  17. Fill the radiator with coolant until it comes out the heater hose outlet at the thermostat housing. Then connect the heater hose. Leave the radiator cap off.
  18. Connect the negative battery cable, then start the engine. Run the vehicle until the thermostat opens, fill the radiator and recovery tank to their proper levels, then turn the engine OFF.
  19. Once the vehicle has cooled, recheck the coolant level, then install the radiator cap.

3.1L Engine
  1. Disconnect the negative battery cable.
  2. Properly drain the cooling system into a suitable container.
  3. Loosen, but do not remove, the water pump pulley bolts.
  4. Remove the serpentine belt.
  5. Unfasten the water pump pulley bolts, then remove the pulley.
  6. Remove the five water pump mounting bolts, then remove the water pump.
To install:
86883115.gif View of the water pump mounting and bolt tightening specifications—3.1L engine shown
Click to Enlarge
  1. Clean all the gasket surfaces completely.
  2. Apply a thin bead of sealer around the outside edge of the water pump along the gasket sealing area, then install the gasket onto the water pump.
  3. Position the water pump on the engine, then tighten the water pump mounting bolts to 89 inch lbs. (10 Nm).
  4. Install the water pump pulley and finger-tighten the pulley bolts.
  5. Install the serpentine belt.
  6. Tighten the water pump pulley bolts to 18 ft. lbs. (25 Nm).
  7. Fill the cooling system.
  8. Connect the negative battery cable, then start the engine. Let the engine run until it reaches normal operating temperature, then check for leaks and coolant level. Add coolant, if necessary, then turn the engine OFF.

Aug 20, 2009 | 1997 Chevrolet Malibu

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