Question about 2000 Pontiac Grand Am GT

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In front of engine thers a cap like part that has a vaacuum hose coming out of it and connects to exhaust some how

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Ealexander23, Sounds like your exhaust recirculation valve (EGR).

Posted on Apr 10, 2011

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Posted on Jan 02, 2017

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Where is the 2.5 d4d erg valve mounted on the engine


In internal combustion engines,exhaust gas recirculation (EGR) is a nitrogen oxide (NOx) emissions reduction technique used in petrol/gasoline and diesel engines.EGR works by recirculating a portion of an engine's exhaust gas back to the engine cylinders. Thers a hose going down the rear of the engine to the exhaust pipe. It recirculates the portion of the gasses coming out of the engine by putting in back into the intake manifold, where the engine can burn it again, thereby reducing the emissions. The EGR valve is located in the engine compartment (underneath the hood). Usually on the side with the air intake manifold attatched to the side frame rail

Mar 08, 2017 | Cars & Trucks

1 Answer

Volkswagen jetta code P0171


P0171 VOLKSWAGEN - System Too Lean engine cylinder Bank 1
Possible causes- Intake air leaks
- Faulty front heated oxygen sensor
- Ignition misfiring
- Faulty fuel injectors
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Faulty Mass Air Flow (MAF) sensor
- Incorrect Positive Crankcase Ventilation (PCV) hose connection
P0455 VOLKSWAGEN - EVAP System (fuel vapor storage and control) Large Leak Detected
Possible causes- Missing or loose fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- EVAP canister or fuel tank leaks
- EVAP system hose leaking
- Fuel tank leaking

Aug 09, 2012 | Volkswagen Cabrio Cars & Trucks

1 Answer

Torque specs for 3.2 1995 heads on my isuzu... I need to fix the car ASAP....


Hi, to install follow the procedure below:


  1. Install new camshaft seals and retaining plates onto the cylinder. Tighten the right camshaft seal retaining plate 6mm bolts to 65 inch lbs. Tighten the left camshaft seal retaining plate 8mm bolts to 191 inch lbs.
  2. Thoroughly clean the cylinder head and engine block sealing surfaces.
  3. Place a new head gasket on the engine block and carefully position the cylinder head on top of the new gasket.

Do not reuse or apply oil to the cylinder head bolts.
  1. Install new cylinder head bolts and torque them in sequence to 47 ft. lbs. (64 Nm) for the M11 bolts and 15 ft. lbs. (21 Nm) for the M8 bolts.
  2. Install the dipstick tube bracket to the cylinder head.
  3. Connect the front exhaust pipes to the exhaust manifolds. Tighten the exhaust bolts to 48 ft. lbs. (67 Nm).
  4. Install the power steering pump bracket. Torque the mounting bolts to 34 ft. lbs. (46 Nm).
  5. Install the cylinder head covers.
  6. Install the timing belt and the auto tensioner (pusher). Torque the mounting bolt to 14 ft. lbs. (19 Nm).
  7. Install the timing belt cover and oil cooler hoses and bracket.
  8. Install the crankshaft pulley. Torque the center bolt to 123 ft. lbs. (167 Nm).
  9. Install the fan pulley assembly.
  10. Install the power steering pump.
  11. Install the accessory drive belts.
  12. Install the engine coolant manifold and the heater hose.
  13. Install the intake manifold. Torque the nuts and bolts to 17 ft. lbs. (24 Nm) in a crisscross pattern.
  14. Install the fuel injector connectors and the fuel hoses to the fuel rail.
  15. Install the common chamber. Torque the nuts and bolts to 17 ft. lbs. (24 Nm).
  16. Install the EGR valve assembly. Torque the mounting bolts on the valve side to 69 inch lbs. (8 Nm) and the bolts on the exhaust side to 21 ft. lbs. (28 Nm).
  17. Connect the evaporative emission canister purge hose.
  18. Connect the fuel pressure control valve vacuum hose.
  19. Connect the positive crankcase ventilation hose.
  20. Install the throttle body assembly. Torque the mounting bolts to 14 ft. lbs. (19 Nm).
  21. Connect the vacuum hoses to the throttle body.
  22. Install the ignition control module and the spark plug wires.
  23. Connect the MAP sensor; Canister vacuum switching valve (VSV); Exhaust gas recirculation (VSV); Intake air temperature sensor and ground connectors.
  24. Connect the vacuum booster hose.
  25. Connect the air vacuum hose.
  26. Connect the accelerator cable. Adjust the accelerator cable by pulling the cable housing while closing the throttle valve and tightening the adjusting nut and screw cap by hand temporarily. Now loosen the adjusting nut by three turns and then tightening the screw cap. Make sure the throttle valve reaches the screw stop when the throttle is closed.
  27. Install the cooling fan assembly and the upper fan shroud.
  28. Install the air cleaner assembly.
  29. Connect the negative battery cable.
  30. Refill and bleed the cooling system.
  31. Refill and bleed the power steering pump if necessary.
  32. Refill the engine with fresh oil.
  33. Run the engine and check for leaks and proper compression.

Best of luck............

May 30, 2011 | 1995 Isuzu Trooper

1 Answer

Torque specs for 3.2 1995 heads on isuzu rodeo heads


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To install:

  1. Install new camshaft seals and retaining plates onto the cylinder. Tighten the right camshaft seal retaining plate 6mm bolts to 65 inch lbs. Tighten the left camshaft seal retaining plate 8mm bolts to 191 inch lbs.
  2. Thoroughly clean the cylinder head and engine block sealing surfaces.
  3. Place a new head gasket on the engine block and carefully position the cylinder head on top of the new gasket.

Do not reuse or apply oil to the cylinder head bolts.
  1. Install new cylinder head bolts and torque them in sequence to 47 ft. lbs. (64 Nm) for the M11 bolts and 15 ft. lbs. (21 Nm) for the M8 bolts.
  2. Install the dipstick tube bracket to the cylinder head.
  3. Connect the front exhaust pipes to the exhaust manifolds. Tighten the exhaust bolts to 48 ft. lbs. (67 Nm).
  4. Install the power steering pump bracket. Torque the mounting bolts to 34 ft. lbs. (46 Nm).
  5. Install the cylinder head covers.
  6. Install the timing belt and the auto tensioner (pusher). Torque the mounting bolt to 14 ft. lbs. (19 Nm).
  7. Install the timing belt cover and oil cooler hoses and bracket.
  8. Install the crankshaft pulley. Torque the center bolt to 123 ft. lbs. (167 Nm).
  9. Install the fan pulley assembly.
  10. Install the power steering pump.
  11. Install the accessory drive belts.
  12. Install the engine coolant manifold and the heater hose.
  13. Install the intake manifold. Torque the nuts and bolts to 17 ft. lbs. (24 Nm) in a crisscross pattern.
  14. Install the fuel injector connectors and the fuel hoses to the fuel rail.
  15. Install the common chamber. Torque the nuts and bolts to 17 ft. lbs. (24 Nm).
  16. Install the EGR valve assembly. Torque the mounting bolts on the valve side to 69 inch lbs. (8 Nm) and the bolts on the exhaust side to 21 ft. lbs. (28 Nm).
  17. Connect the evaporative emission canister purge hose.
  18. Connect the fuel pressure control valve vacuum hose.
  19. Connect the positive crankcase ventilation hose.
  20. Install the throttle body assembly. Torque the mounting bolts to 14 ft. lbs. (19 Nm).
  21. Connect the vacuum hoses to the throttle body.
  22. Install the ignition control module and the spark plug wires.
  23. Connect the MAP sensor; Canister vacuum switching valve (VSV); Exhaust gas recirculation (VSV); Intake air temperature sensor and ground connectors.
  24. Connect the vacuum booster hose.
  25. Connect the air vacuum hose.
  26. Connect the accelerator cable. Adjust the accelerator cable by pulling the cable housing while closing the throttle valve and tightening the adjusting nut and screw cap by hand temporarily. Now loosen the adjusting nut by three turns and then tightening the screw cap. Make sure the throttle valve reaches the screw stop when the throttle is closed.
  27. Install the cooling fan assembly and the upper fan shroud.
  28. Install the air cleaner assembly.
  29. Connect the negative battery cable.
  30. Refill and bleed the cooling system.
  31. Refill and bleed the power steering pump if necessary.
  32. Refill the engine with fresh oil.
  33. Run the engine and check for leaks and proper compression.

May 16, 2011 | 1995 Isuzu Rodeo

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

1 Answer

I need to know how to take the power steering off a 1997 dodge caravan?


Power Steering Pump-Let me know if you need to take the power steering gear off: Removal & Installation 2.4L Engine To Remove:
  1. Disconnect and isolate the negative battery cable.
    • Remove as much fluid as possible from the power steering fluid reservoir using a siphon pump.
    • Remove the drive belt from the power steering pump.
    • Loosen the nut securing the front power steering pump bracket to the aluminum bracket.
    • Raise and safely support the vehicle.
    • Place a drain pan under the vehicle to catch the power steering fluid.
    • Disconnect the connector from the oxygen sensor at the rear engine mount bracket. NOTE: The exhaust system needs to be moved to allow room for power steering pump removal.
    • Remove the bolts and nuts securing the catalytic converter to the exhaust manifold.
    • Disconnect the exhaust system hangers from the brackets. Move the exhaust system rearward and left as far as possible.
    • Raise the heat sleeve to expose the clamp and then disconnect the fluid return hose from the steel tube. Allow the fluid to drain.
    • Remove the accessory drive splash shield.
    • Remove the supply hose coming from the reservoir from the power steering pump. Drain the fluid from the hose.
    • Disconnect the pressure hose from the pump. Drain off excess fluid from the hose.
    • Remove the return hose from the pump. Allow the fluid to drain from the tube.
    • Remove the nut from the rear of the pump to the cast mounting bracket.
    • Loosen the three bolts securing the pump to the front mounting bracket. Then remove the nut and remaining bolt.
    • Remove the power steering pump and the front bracket from the cast bracket on the engine as an assembly through the exhaust tunnel.
    • Remove the three bolts attaching the front bracket to the power steering pump and separate the power steering pump from the front bracket.
To Install:
  1. Install the power steering pump through the exhaust tunnel of the vehicle.
  2. Loosely install the nut on the rear of the pump to hold the pump to the bracket.
  3. Install the front bracket on the pump and install the three bolts loosely.
  4. Install the nut and bolt securing the bracket to the cast bracket.
  5. Tighten the three front bracket-to-pump bolts to 40 ft. lb. (54 Nm).
  6. Connect the pressure hose to the power steering pump. Make sure to inspect the o-ring and replace as needed. Tighten the fitting to 275 in. lb. (31 Nm).
  7. Connect the low pressure return hose to the power steering pump.
  8. Connect the supply hose from the reservoir to the pump. Make sure the hose is not near drive belt.
  9. Install the drive belt and splash shield.
  10. Connect the fluid return hose to the steel tube on the cradle and cover with the heat shield sleeve.
  11. Properly position the protective heat sleeve over the return hose. Secure the heat sleeve with a tie strap to the hose to keep it in place.
  12. Install the exhaust system.
  13. Connect the oxygen sensor wiring connector to the vehicle wiring harness.
  14. Lower the vehicle.
  15. Connect the negative battery cable.
  16. Fill and bleed the power steering system.
  17. Check for leaks.
3.0L Engine To Remove:
  1. Disconnect and isolate the negative battery cable.
  2. Remove as much fluid as possible from the power steering fluid reservoir using a siphon pump.
  3. Remove the drive belt from the power steering pump.
  4. Raise and safely support the vehicle.
  5. Place a drain pan under the vehicle to catch the power steering fluid.
  6. Disconnect the connector from the oxygen sensor at the sensor wiring harness grommet on the floor pan. NOTE: The exhaust system needs to be moved to allow room for power steering pump removal.
  7. Remove the bolts and nuts securing the catalytic converter to the exhaust manifold.
  8. Disconnect the exhaust system hangers from the brackets. Move the exhaust system rearward and left as far as possible.
  9. Raise the heat sleeve to expose the clamp and then disconnect the fluid return hose from the steel tube. Allow the fluid to drain.
  10. Remove the accessory drive splash shield.
  11. Remove the supply hose coming from the reservoir from the power steering pump. Drain the fluid from the hose.
  12. Disconnect the pressure hose from the pump. Drain off excess fluid from the hose.
  13. Remove the two bolts securing the pump to the alternator/power steering pump/belt tensioner bracket.
  14. Remove the pump from the bracket and remove it from the vehicle through the exhaust tunnel on the floor pan.
To Install:
  1. Install the power steering pump through the exhaust tunnel of the vehicle.
  2. Install the pump on the bracket with the two mounting bolts. Tighten the two bolts to 40 ft. lb. (54 Nm).
  3. Install the pump rear support bracket. Tighten the nut and bolts to 40 ft. lb. (54 Nm).
  4. Connect the pressure hose to the power steering pump. Make sure to inspect the o-ring and replace as needed. Tighten the fitting to 275 in. lb. (31 Nm).
  5. Connect the low pressure return hose to the power steering pump.
  6. Connect the supply hose from the reservoir to the pump. Make sure the hose is not near drive belt.
  7. Install the drive belt and splash shield.
  8. Connect the fluid return hose to the steel tube on the cradle and cover with the heat shield sleeve.
  9. Properly position the protective heat sleeve over the return hose. Secure the heat sleeve with a tie strap to the hose to keep it in place.
  10. Install the exhaust system.
  11. Connect the oxygen sensor wiring connector to the vehicle wiring harness.
  12. Lower the vehicle.
  13. Connect the negative battery cable.
  14. Fill and bleed the power steering system.
  15. Check for leaks.
3.3L & 3.8L Engines To Remove:
  1. Disconnect and isolate the negative battery cable.
  2. Remove as much fluid as possible from the power steering fluid reservoir using a siphon pump.
  3. Raise and safely support the vehicle.
  4. Disconnect the connector from the oxygen sensor at the sensor wiring harness grommet on the floor pan. NOTE: The exhaust system needs to be moved to allow room for power steering pump removal.
  5. Remove the bolts and nuts securing the catalytic converter to the exhaust manifold.
  6. Disconnect the exhaust system hangers from the brackets. Move the exhaust system rearward and left as far as possible.
  7. Place a drain pan under the vehicle to catch the power steering fluid.
  8. Raise the heat sleeve to expose the clamp and then disconnect the fluid return hose from the steel tube on the cradle. Allow the fluid to drain into the pan.
  9. Remove the accessory drive splash shield.
  10. Remove the drive belt from the power steering pump.
  11. Remove the supply hose coming from the reservoir from the power steering pump. Drain the fluid from the hose.
  12. Disconnect the pressure hose from the pump. Drain off excess fluid from the hose.
  13. Disconnect the return hose from the pump. Drain the fluid into the drain pan.
  14. Remove the power steering pump rear support bracket.
  15. Remove the three bolts securing the pump to the alternator/power steering pump/belt tensioner bracket.
  16. Remove the pump from the bracket and remove it from the vehicle through the exhaust tunnel on the floor pan.
To Install:
  1. Install the power steering pump through the exhaust tunnel of the vehicle.
  2. Install the pump on the bracket with the three mounting bolts. Tighten the bolts to 40 ft. lb. (54 Nm).
  3. Install the pump rear support bracket. Tighten the fasteners to 40 ft. lb. (54 Nm).
  4. Connect the pressure hose to the power steering pump. Make sure to inspect the o-ring and replace as needed. Tighten the fitting to 275 in. lb. (31 Nm).
  5. Connect the low pressure return hose to the power steering pump.
  6. Connect the supply hose from the reservoir to the pump. Make sure the hose is not near drive belt.
  7. Install the drive belt and splash shield.
  8. Connect the fluid return hose to the steel tube on the cradle and cover with the heat shield sleeve.
  9. Properly position the protective heat sleeve over the return hose. Secure the heat sleeve with a tie strap to the hose to keep it in place.
  10. Install the exhaust system.
  11. Connect the oxygen sensor wiring connector to the vehicle wiring harness.
  12. Lower the vehicle.
  13. Connect the negative battery cable.
  14. Fill and bleed the power steering system.
  15. Check for leaks.
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Oct 13, 2010 | 1997 Dodge Caravan

1 Answer

Hose came off from under my 1999 grand cherokee jeep, it said on it air emmissions. I can't locate the place it goes. can you help me.


A.I.R. emissions consist of a belt driven air pump some valves, and a pipe connection to the exhaust manifold. this connection is under the intake mainifold and may be seen by looking above the top of the front tire with the car jacked up and or the wheel removed with the cover pushed back to see the engine. ther can be an emmissions sticker under the hood that shows where the hoses hook to. theres supposed to be one but they fall off and are required in the U.S. but may not in other countries.

Jul 05, 2010 | 1999 Jeep Grand Cherokee

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

2 Answers

CAR PROBLEM


The code PO420 you have is Catalyst System efficiency is below threshold bank one. Usually replacing the O2 sensor that's the front most in the exhaust system will cure your problem, Your Check Engine light is on and you find a P0420 code for a catalytic converter fault. Does that really mean your converter has reached the end of the road and needs to be replaced? A new converter can cost $600 to $1000 or more if a new car dealer or repair shop does the job, or maybe half that amount if you do it yourself. It's an expensive fix that may or may not be necessary. The problem, in most cases, is an emissions issue, not a performance issue that affects the way the engine runs.
A P0420 diagnostic trouble code is a "generic" fault code that is set when the Onboard Diagnostic II (OBD II) system sees a drop in converter efficiency. The OBD II system monitors catalyst efficiency by comparing the switching activity of the upstream and downstream oxygen sensors in the exhaust. The upstream O2 sensor in theexhaust manifold reflects the condition of the exhaust gases as they exit the engine. The downstream O2 sensor in or behind the catalytic converter reflects the condition of the exhaust after it passes through he converter.
The catalytic converter is like an after-burner. It oxidizes (burns) any residual fuel vapors (unburned hydrocarbons or HC) in the exhaust. It also burns any carbon monoxide (CO) in the exhaust. The exhaust must meet federal emission standards, and if a problem exists that causes emissions to exceed the federal limits by 150%, the OBD II system is supposed to catch the fault, set a code and turn on the Check Engine light.
Thanks.


Mar 30, 2009 | 2003 Chrysler 300M

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