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Changing the intake manifold on a bonneville - 2003 Chevrolet Impala

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What's the year,make,model and engine size Mark?

Posted on Oct 27, 2012

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1 Answer

How to find out if the intake manifold gasket is bad


Spray carburetor cleaner around the edges of the intake manifold an listen for engine rpm change . If it changes you have a vacuum leak .How does the engine idle , steady or does it try to stall .From your description I'd say that your mass airflow sensor is dirty or bad , temp sensor . Your best bet is to take your vehicle to a ASE certified repair shop an have them diagnose the problem. Where they have a professional grade scan tool to check engine sensor data .

Dec 27, 2015 | 2001 Pontiac Bonneville

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What is a code PO106


The code is pointing to the MAP sensor or barometric pressure sensor, and the sensor most of the time is on the intake manifold or on the fire wall connected by a small hose to the intake manifold

Jun 23, 2014 | 1996 Pontiac Bonneville SE CA Value

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When changing the intake manifold do i need to put oil on the gaskets?


leave dry dont put factory back on use the ones called problems solvers these are metal

Oct 27, 2012 | 1998 Pontiac Bonneville

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Need to put in the air intake manifold


you need to buy haynes repair it will show and tell you how to remove and install intake manifold, you will mechanic basic tool set and a torque wrench.

Sep 09, 2012 | 1996 Pontiac Bonneville SE CA Value

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Where is the cooling line that goes to the intake manifold 380engine


There is not a cooling line that goes to the intake manifold. It's for air only

Aug 18, 2012 | 1997 Pontiac Bonneville

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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:


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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

Torque spec for lower intake manifold on 92 Bonneville naturally aspirated


dont know just tighten with a 3/th drive rachet till it feels right ,once nut locks in then two fingers on end of rachet and a slight nip is enough

Mar 11, 2010 | 1992 Pontiac Bonneville

1 Answer

Looking for torque specs and sequence of both intake manifold and plastic plenum on 98 pontiac bonneville 3.8 non turbo


Lower intake bolts 11 ft. lbs start in the center of the intake and work your way out cross from side to side.Tighten the upper intake bolts with the same procedure with 89 inch pds.Be sure to apply threadlocker to the lower intake bolt threads.

Feb 07, 2010 | 1998 Pontiac Bonneville

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