Question about 1998 GMC Sonoma

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How do you take the intake manifold off - 1998 GMC Sonoma

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Posted on Sep 30, 2010

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2008 dodge avenger code p2004


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There is a factory service bulletin for this problem for 2007-2008 Dodge Avengers. (JS)

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Exaust intake leaking


It's exhaust manifold. There are two manifolds, the intake manifold in the valley between the cylinder heads, and the exhaust manifolds, one on each side of a v figured engine.

And, yes, a leak in the exhaust or the intake will make it run lean. If the leak is close to the engine, it can do harm to the valves, too. There is a gasket between the exhaust manifold and the engine block. Likewise, there is an intake manifold gasket between the intake manifold and the block.

Apr 04, 2014 | 1998 Ford F150 Regular Cab

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P1031


.P1031 Intake manifold air control valve position sensor
Possible Causes - Intake manifold air control valve position sensor circuit open circuit
- Intake manifold air control valve position sensor circuit poor electrical connection
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1 Answer

How to remove intake manifold on 2005 Buick Lesabre


You didn't post the size of your engine so please pick the appropriate one:

3.8L
  1. Relieve the fuel system pressure.
  2. Drain the cooling system.
    1. Remove or disconnect the following:
    2. Negative battery cable
    • Supercharger
    • Thermostat housing
    • Exhaust Gas Recirculation (EGR) tube at the intake manifold
    • Engine Control Temperature (ECT) sensor
    • Intake manifold
  • To install:

    1. Install or connect the following:
      • Intake manifold with new gaskets. Torque the bolts, working from the center out, to 11 ft. lbs. (15 Nm).
      • ECT sensor connector
      • EGR tube to the intake manifold
      • Thermostat housing
      • Supercharger
      • Negative battery cable
    2. Refill and bleed the cooling system.
    3. Run the engine and check for leaks and proper engine operation.
    4.6L
    4.6L Engine
    1. Remove the brake booster hose from the throttle body.
    2. Remove the fuel pressure regulator vacuum tube from the fuel pressure regulator and the water crossover.
    3. Remove the PCV fresh air feed tube from the camshaft cover and the throttle body.
    4. Remove the PCV dirty air tube from the PCV orifice in the right camshaft cover and from the intake manifold.
    5. Disconnect the fuel injector electrical connectors from the fuel injectors.
    6. Remove the fuel injector wiring harness.
    7. Remove the fuel rail bracket nut from the engine lift bracket.
    8. Remove the fuel rail studs.
    9. Lift and remove the fuel rail with injectors.
    10. Loosen the plenum duct clamp in order to remove the intake manifold.
    11. Remove the intake manifold bolts.
    12. Remove the intake manifold.

    To install:

    1. Install the intake manifold, fitting the plenum duct over the intake manifold duct.
    2. Loosely install the intake manifold bolts.

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    Intake manifold torque sequence-4.6L engine


    1. Tighten the intake manifold bolts in sequence. Tighten the intake manifold bolts to 89 inch lbs. (10 Nm).
    2. Tighten the plenum duct clamp to the intake manifold. Tighten the plenum duct clamp to 24 inch lbs. (2.75 Nm).
    3. Inspect the fuel injector O-rings. Ensure the fuel injector O-rings are not missing, misaligned or damaged. Replace the O-rings if necessary.
    4. Lubricate the intake manifold fuel injector bores with light mineral oil (GM P/N 9981704), clean engine oil, or equivalent.
    5. Install the fuel rail with fuel injectors as an assembly.
    6. Install the fuel rail studs. Tighten the fuel rail studs to 80 inch lbs. (9 Nm).
    7. Install the fuel rail bracket nut to the engine lift bracket. Tighten the fuel rail bracket nut to 89 inch lbs. (10 Nm).
    8. Install the fuel injector wiring harness.
    9. Connect the fuel injector electrical connectors to the fuel injectors.
    10. Install the PCV dirty air tube to the PCV orifice in the right camshaft cover and to the intake manifold.
    11. Install the PCV fresh air feed tube to the camshaft cover and the water crossover.
    12. Install the fuel pressure regulator vacuum tube to the fuel pressure regulator and the throttle body.
    13. Install the brake booster hose to the throttle body.

    Nov 13, 2010 | Buick LeSabre Cars & Trucks

    1 Answer

    Coolant leaking in and around the intake manifold as well as the under carriage of that same part I think. Outake? I know that the part that attaches to the manifold appears to be metal but the manifold...


    The plastic piece is the upper intake manifold. The metal part is the lower intake manifold. Sometimes the gaskets go bad between the upper and lower intake manifolds. But usually the upper intake manifold is cracked and needs replaced.

    Nov 11, 2010 | 1993 Buick Park Avenue

    2 Answers

    Need to replace the intake manifold


    3.8L Engine (most common) Upper Intake Manifold To Remove:
    1. Drain the cooling system.
    2. Remove or disconnect the following:
      • Negative battery cable.
      • Fuel injector sight shield.
      • Air cleaner intake duct.
      • Right spark plug wires from the ignition control module and reposition.
    3. Relieve the fuel pressure.
    4. Remove or disconnect the following:
      • Fuel rail assembly.
      • Brake booster hose from the vacuum source manifold in the upper intake manifold.
      • Exhaust Gas Recirculation Valve (EGR) wiring harness heat shield nut, bolt and the EGR heat shield.
      • Throttle body support bracket upper bolt.
    5. Disconnect the electrical connectors from the following:
      • EVAP purge solenoid
      • Throttle Position (T/P) sensor
      • Idle Air Control (IAC) valve
      • Manifold Absolute Pressure (MAP) sensor
      • Mass Air Flow (MAF) sensor
      • EVAP purge solenoid vacuum line from the throttle body.
      • Accelerator and the cruise control cables with the bracket from the throttle body.
    6. Remove or disconnect the following:
      • Upper intake manifold bolts and stud.
      • Clean the upper intake manifold bolt threads.
    7. Remove or disconnect the following:
      • Upper intake manifold by lifting the back of the intake and sliding the manifold forward from the throttle body support bracket.
      • Upper-to-lower intake manifold carrier gasket from the upper intake manifold.
    8. If the upper intake manifold is being replaced, remove the following:
      • Throttle body assembly.
      • Manifold Absolute Pressure (MAP) sensor.
      • Positive Crankcase Ventilation (PCV) valve.
      • Vacuum source manifold.
    Upper intake manifold bolt torque sequence (3.8L engine) gm-03-38-530.gif

    To Install:
    1. If the manifold was replaced, install or connect the following:
      • Vacuum source manifold.
      • Positive Crankcase Ventilation (PCV) valve.
      • Manifold Absolute Pressure (MAP) sensor.
      • Throttle body assembly.
      • Upper-to-lower intake manifold carrier gasket to the upper intake manifold.
    2. Carefully place the upper intake manifold onto the lower intake manifold. Ensure that the alignment pins in the upper intake manifold align with the holes in the lower intake manifold. NOTE: Apply thread lock compound, to the bolt threads before assembly.
    3. Install or connect the following:
      • Upper intake manifold. Tighten the upper intake manifold bolts in sequence to 89 in lbs (10 Nm)
      • Accelerator and the cruise control cables with the bracket to the throttle body.
      • EVAP purge solenoid vacuum line to the throttle body.
    4. Connect the electrical connectors to the following:
      • Mass Air Flow (MAF) sensor
      • Manifold Absolute Pressure (MAP) sensor
      • Idle Air Control (IAC) valve
      • Throttle Position (T/P) sensor
      • EVAP purge solenoid
    5. Install or connect the following:
      • Throttle body upper support bracket bolt. Tighten the bolt to 89 in lbs (10 Nm)
      • EGR valve wiring harness heat shield, nut and the bolt. Tighten the nut and the bolt to 89 in lbs (10 Nm)
      • Brake booster hose to the vacuum source manifold.
      • Fuel rail assembly.
      • Right spark plug wires.
      • Air cleaner intake duct.
      • Fuel injector sight shield.
    6. Connect the negative battery cable.
    7. Fill the cooling system.
    8. Inspect for fluid or vacuum leaks.
    Lower Intake Manifold (W/O Supercharger) To Remove:
    1. Remove or disconnect the following:
      • Upper intake manifold.
      • Generator brace.
      • Drive belt tensioner with the mounting bracket and the heater water bypass inlet pipe.
      • Exhaust gas recirculation EGR outlet pipe bolt from the lower intake manifold.
      • Radiator inlet hose from the water outlet housing.
      • ECT sensor electrical connector.
      • Right upper engine mount strut bracket.
      • Generator brace bracket bolts.
      • Generator brace bracket.
      • Lower intake manifold bolts.
      • Lower intake manifold.
      • Lower intake manifold seals.
      • Lower intake manifold gaskets.
    2. If replacing the lower intake manifold, Remove or disconnect:
      • Water outlet housing bolt and stud
      • Water outlet housing
      • Gasket and the thermostat.
      • ECT sensor.
    3. Inspect the flatness of inlet flanges.
    4. Clean the intake manifold mating surfaces.
    5. Clean the intake manifold bolts and bolt holes of adhesive compound.
    To Install:
    1. If removed, install the ECT sensor.
      • Tighten the ECT sensor to 18 ft. lbs. (25 Nm)
    2. If removed, install the thermostat, the gasket, and the water outlet housing.
    3. If removed, install the water outlet housing bolt and the stud.
      • Tighten the bolt and stud to 20 ft. lbs. (27 Nm)
    4. Install or connect the following:
      • Lower intake manifold gaskets. NOTE: Apply sealer GM P/N 12346286 (Canadian P/N 10953472) or equivalent to the ends of the intake manifold seals.
      • Lower intake manifold seals.
      • Lower intake manifold.
      • Lower intake manifold bolts.
      NOTE: Apply thread lock compound GM P/N 12345382 (Canadian P/N 10953489) or equivalent to the two hidden bolts and ensure they are installed.
    5. Tighten the lower intake manifold bolts in sequence to 11 ft. lbs. (15 Nm) gmpc_v6_5.gif

    6. Install or connect the following:
      • Generator brace bracket.
      • Generator brace bracket bolts. Tighten the bolts to 37 ft. lbs. (50 Nm)
      • Right upper engine mount strut bracket.
      • ECT sensor electrical connector.
      • Radiator inlet hose to the water outlet housing.
      • EGR outlet pipe to the lower intake manifold.
      • EGR outlet pipe bolt to the lower intake manifold. Tighten the bolt to 21 ft. lbs. (29 Nm)
      • Drive belt tensioner.
      • Generator brace.
      • Upper intake manifold.
    7. Inspect for leaks.
    Lower Intake Manifold (W/ Supercharger) To Remove:
    1. Disconnect the negative battery cable.
    2. Drain the cooling system.
    3. Remove the supercharger.
    4. Remove the thermostat housing.
    5. Remove the EGR pipe at the intake manifold.
    6. Disconnect the electrical connection at the temperature sensor.
    7. Remove the intake manifold and gaskets.
    NOTE: The coolant bypass tube will release from the intake manifold when the manifold is removed.
    To Install:
    1. Clean the gasket sealing surfaces.
    2. Install the intake manifold gaskets.
    3. Align the coolant bypass tube with the opening in the intake manifold and install the manifold. Tighten the bolts to 11 lb ft (15 Nm).
    4. Install the electrical connector to the temperature sensor.
    5. Install the EGR pipe to the intake manifold.
    6. Install the thermostat housing.
    7. Install the supercharger.
    8. Fill the cooling system.
    9. Connect the negative battery cable.

    Aug 05, 2010 | 1997 Pontiac Grand Prix

    1 Answer

    How do it remove the intake manifold?


    its easy my friend, take your tools, drain engine oil and coolant, remove left side rocker ornament and air duct of intake manifold, collector,hose wires, harness etc, remove ignition coils, egr tube,intake manifold collector supports and the manifold( right cylinder head only,) remove intake manifold, and replace knock sensor to avoid some trouble in the future

    Jun 26, 2010 | 1996 Nissan Maxima

    1 Answer

    Need to replace intake manifold how do you do this


    Bonneville, LeSabre, Park Avenue 2000-2005 Intake Manifold - Removal & Installation

    3.8L Engine
    VIN 1 Engine
    1. Before servicing the vehicle, refer to the Precautions section.
    2. Relieve the fuel system pressure.
    3. Drain the cooling system.
    4. Remove or disconnect the following:
      Negative battery cable Supercharger Thermostat housing Exhaust Gas Recirculation (EGR) tube at the intake manifold Engine Control Temperature (ECT) sensor Intake manifold
    To install:
    1. Install or connect the following:
      Intake manifold with new gaskets. Torque the bolts, working from the center out, to 11 ft. lbs. (15 Nm). ECT sensor connector EGR tube to the intake manifold Thermostat housing Supercharger Negative battery cable
    2. Refill and bleed the cooling system.
    3. Run the engine and check for leaks and proper engine operation.

    VIN K Engine
    1. Before servicing the vehicle, refer to the Precautions section.
    2. Disconnect the negative battery cable.
    3. Drain the cooling system.
    4. Relieve the fuel system pressure.
    5. Remove or disconnect the following:
      Fuel injector sight shield Air inlet duct Spark plug wires from the right side Manifold Absolute Pressure (MAP) sensor Vacuum lines from the intake manifold Fuel lines Fuel injector electrical connectors Fuel regulator vacuum line Fuel rail from the intake manifold Exhaust Gas Recirculation (EGR) heat shield Throttle cable bracket from the cylinder head mounting bracket and the throttle body cables Throttle body support bracket Upper intake plenum and gasket Thermostat housing Electrical connector from the Engine Coolant Temperature (ECT) sensor Drive belt tensioner assembly EGR valve outlet pipe Lower intake manifold

      a5adffa.jpg
      Fig. Exploded view of the intake manifold and related components-3.8L (VIN K) engine
    To install:


    140d431.jpg
    Fig. Upper intake manifold torque sequence-3.8L (VIN K) engine


    4950e4f.jpg
    Fig. Lower intake manifold torque sequence-3.8L (VIN K) engine
    1. Install or connect the following:
      Intake manifold using new manifold gaskets. Torque the bolts in sequence to 11 ft. lbs. (15 Nm); then, re-torque to 11 ft. lbs. (15 Nm). EGR valve outlet pipe Drive belt tensioner assembly. Torque the tensioner bolts to 37 ft. lbs. (50 Nm). Electrical connector to the ECT sensor Thermostat housing Upper intake plenum. Torque the intake plenum bolts to 88 inch. lbs. (10 Nm). Throttle body support bracket Throttle cable bracket to the cylinder head mounting bracket and the cables to the throttle body lever EGR heat shield Fuel rail. Torque the fuel rail bolts to 88 inch. lbs. (10 Nm). Fuel lines Fuel regulator vacuum line Fuel injector electrical connectors Vacuum lines to the intake manifold MAP sensor Spark plug wires Fuel injector sight shield and air inlet duct Negative battery cable
    2. Refill and bleed the cooling system.
    3. Run the engine and check for leaks and proper engine operation.

    Hope this help (remember rated this).

    May 17, 2010 | 2001 Pontiac Bonneville

    1 Answer

    Intake manifold gasket / replace


    3.8L Engine

    NOTE The 3.8L (VIN K) non-supercharged engine uses a two-piece intake manifold consisting of an upper air plenum which mounts the throttle body and a lower intake manifold assembly which houses the fuel injectors. The 3.8L (VIN 1) supercharged engine uses a similar lower intake manifold. The supercharger serves as the upper manifold.
    Lower Manifold

    NOTE Two bolts which fasten the lower intake manifold to the cylinder head are accessible only after the upper intake manifold is removed. These bolts are located in the right front and left rear corners of the lower intake manifold. Remove the upper intake manifold to service the lower intake.
    The 3.8L (VIN 1) supercharged engine uses a manifold similar to the 3.8L (VIN K), but the supercharger serves as the upper manifold.
    1. Disconnect the negative battery cable.
    2. On 3.8L (VIN 1) engines, remove the supercharger assembly. Please see the procedure in this section.
    3. Remove the upper intake manifold using the procedure above.
    4. Remove the EGR outlet pipe from the intake manifold.
    5. Detach the engine coolant temperature sensor wiring harness from the sensor.
    6. Remove the lower intake manifold bolts and carefully lift off the manifold.

    To install:


    0900c15280269f1b.jpg enlarge_icon.gifenlarge_tooltip.gif Fig. Lower intake manifold bolt torque sequence-3.8L (VIN K) engine
    1. Clean all parts well with degreaser, especially the gasket seal surfaces on the upper and lower manifold pieces and between the lower manifold and the cylinder heads..
    2. Install new gaskets to the cylinder heads and new seals to the engine block. Carefully lower the manifold into place. Apply thread-locking compound to the bolt threads. Make sure to install the two hidden bolts in the lower intake manifold. Hand start all bolts, then torque evenly to 11 ft. lbs. (15 Nm). Follow the toque sequence, starting in the center, then working outwards in a circle.
    3. Install the remaining components in the reverse order of the removal process.

    Upper Intake Manifold (Plenum)
    1. Disconnect the negative battery cable.
    2. On 3.8L (VIN 1) engines, remove the supercharger assembly. Please see the procedure in this section.
    3. Tag for identification, then remove the right side spark plug wires.
    4. Disconnect the ignition wires from the fuel rail.
    5. Remove the fuel rail. Please see Section 5.
    6. Remove the cable bracket from the intake manifold.
    7. Remove the throttle body.


    NOTE Two bolts which fasten the lower intake manifold to the cylinder head are accessible are accessible only after the upper intake manifold is removed. These bolts are located in the right front and left rear corners of the lower intake manifold.
    1. Remove the upper intake manifold bolts and carefully lift the upper intake manifold from the engine.



    0900c15280269f1c.jpg enlarge_icon.gifenlarge_tooltip.gif Fig. Upper intake manifold and bolt torque sequence-3.8L (VIN K) engine
    To install:
    1. Clean all parts well with degreaser, especially the gasket seal surfaces on the upper and lower manifold pieces.
    2. Install new gaskets to the cylinder heads and new seals to the engine block. Carefully lower the manifold into place. Make sure to install the two hidden bolts in the lower intake manifold. Hand start all bolts, then torque evenly to 89 inch lbs. (10 Nm). Follow the torque sequence, starting in the center, then working outwards in a circle.
    3. Install the remaining components in the reverse order of the removal process.

    Sep 11, 2009 | 1999 Buick Regal

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