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Exhaust manifold - 1990 Volkswagen Jetta

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I need to remove the exhaust manifold on the right side of a 94 4.9l engine in a cadillac deville. It has a broken bolt in the exhaust. What is involved in removing the manifold?


I suggest you use all new exhaust manifold hardware and torque new bolts to 20 Ft Lbs.
4.5L and 4.9L Engines
RIGHT
Disconnect the negative battery cable. Remove the air cleaner. Remove the exhaust crossover pipe. Disconnect the oxygen and coolant temperature sensors. Remove the catalytic converter-to-AIR pipe clip bolt. Remove the upper manifold-to-cylinder head bolts. Raise and safely support the vehicle. Disconnect the converter air pipe bracket from the stud and remove the converter-to-manifold exhaust pipe. Support the engine cradle with screw jacks and remove the rear cradle bolts. Loosen the front cradle bolts and slightly lower the Engine cradle. Remove the remaining exhaust manifold-to-cylinder head bolts, the AIR pipe, and the manifold. Clean the gasket mounting surfaces.
To install:
Install the exhaust manifold and replace the AIR pipe. Tighten the manifold mounting bolts to 16-18 ft. lbs. (21-24 Nm). Install the manifold-to-converter exhaust pipe and replace the converter air pipe bracket to the stud. Raise the Engine cradle and install the rear cradle bolts. Tighten to 75 ft. lbs. (102 Nm). Lower the vehicle. Replace the upper manifold-to-cylinder head bolts. Replace the converter air pipe to AIR pipe clip bolt. Connect the coolant temperature and oxygen sensor connectors. Replace the exhaust crossover pipe. Replace the air cleaner and connect the negative battery cable. Start the Engine and check for leaks.

Mar 28, 2017 | Cadillac Cars & Trucks

1 Answer

Torque spec on exhaust manifold for 2000 yukon xl


EXHAUST MANIFOLD BOLT TORQUE 2000 GMC Truck Yukon XL 1500 2WD 5.3L SFI 8cyl The Exhaust Manifold Bolt Torque

Exhaust manifold bolts (first pass) 11 Lb/Ft.Exhaust manifold bolts (final pass) 18 Lb/Ft.Exhaust manifold nuts 39 Lb/Ft.Exhaust manifold stud 16 Lb/Ft.Air injection reaction (AIR) Pipe to exhaust manifoldnuts 18 Lb/Ft.(AIR) Pipe to exhaust manifold studs 4 Lb/Ft.Exhaust manifold AIR pipe studs 4 Lb/Ft.Note:To torque bolts and nuts, start in center usingcrisscross pattern working outward.

May 07, 2011 | GMC Yukon XL Cars & Trucks

1 Answer

I need the torque values for exhaust manifold to head nuts and exhaust manifold to exhaust pipe nuts. Car is a 1996 Odyssey.


The exhaust maniifold to head nuts are 23 ft lbs.

The manifold to exhaust pipe nuts are 40 ft lbs.

Oct 10, 2010 | 1996 Honda Odyssey

1 Answer

Where are the four O2 sensors on a 2003 Montero Sport? Is $300 reasonable to replace the two upstream sensors?


According to the service literature I read, the 2003 Montero Sport with the 3.0 or 3.5 L engine does not have O2 sensors listed even in the maintenance schedule. The 2.4 L engine has it on the exhaust manifold though.
---
However, the following lists the par, though for before or after the catalytic converter:

http://www.partstrain.com/store/index.php?VN=4294967180+4294966587+4294964143+&Nr=AND(universal:0)&N=0&Ntt=Oxygen%20Sensor

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I think that $250 to $300 is reasonable if the Oxygen sensors are stuck in there with rust and the threads are preserved by the technician. Oxygen Sensor replacement can be tricky.
---
Good luck on this repair.

Exhaust Manifold

REMOVAL & INSTALLATION

2.4L Engine


  1. Remove or disconnect the following:

    • Negative battery cable

    CAUTION
    Wait at least 90 seconds after the negative
    battery cable is disconnected to prevent possible deployment of the air bag.


  2. Heat cowl from the exhaust manifold
  3. Aspirator valve assembly, if equipped
  4. Oil dipstick and guide
  5. Oxygen (O2S) sensor connector and ground cable, if equipped
  6. Exhaust pipe from the manifold
  7. Exhaust manifold and gasket from the engine
    To install:

  8. Install or connect the following:

    • Exhaust manifold. Torque the M8 mounting nuts to 22 ft. lbs. (29 Nm) and the
      M10 mounting bolts 36 ft. lbs. (49 Nm). starting from the middle and working
      outward.
    • O2S sensor connector and ground cable, if equipped
    • Exhaust pipe to the manifold. Torque the nuts to 35ft. (49 Nm).
    • Aspirator valve assembly, if removed
    • Heat cowl to the exhaust manifold. Torque the bolts to 117 inch lbs. (13
      Nm).
    • Negative battery cable

  9. Start the engine and check for exhaust leaks.


3.0L and 3.5L Engines


  1. Remove or disconnect the following:

    • Negative battery cable
    • Exhaust pipe from the exhaust manifolds
    • Oil dipstick, guide and O-ring
    • Heat shields
    • Exhaust manifolds

  2. Clean the gasket mounting surfaces. Inspect the manifolds for cracks,
    flatness and/or damage.
    To install:

  3. Install or connect the following:

    • New gasket and exhaust manifold. Torque the nuts to 33 ft. lbs. (44 Nm) on
      3.0L engines and 22 ft. lbs. (29 Nm) on 3.5L engines.
    • Heat shield, Torque the bolts to 10 ft. lbs. (14 Nm).
    • Exhaust pipe to the exhaust manifolds. Torque the nuts to 35ft. (49 Nm).
    • Oil dipstick, guide and new O-ring
    • Negative battery cable

  4. Start the engine and check for exhaust leaks.


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Oct 07, 2010 | 2003 Mitsubishi Montero Sport

1 Answer

Where are the exhaust system bolts located?


Removal & Installation 2.2L Engine To Remove:
  1. Remove or disconnect the following:
    • Negative battery cable.
    • Heat shield.
    • Oxygen sensor.
  2. Raise and safely support the vehicle.
  3. Remove exhaust pipe from the exhaust manifold.
  4. Lower the vehicle.
  5. Remove the exhaust manifold mounting nuts from the cylinder head. chevy_cav_02-04_exmanifold.gif

  6. Remove the exhaust manifold.
  7. Clean the mating surfaces.
  8. Check for cracks, broken flanges and gasket surface damage.
  9. Use a straight edge and a feeler gauge. If the flanges or the mating surfaces do not align, the manifold is warped and should be replaced.
To Install:
NOTE: The manufacturer recommends using new exhaust system nuts.
  1. Install the manifold gasket.
  2. Position the exhaust manifold to the cylinder head. Exhaust manifold 2.2L 87953055.gif

  3. Install the new exhaust manifold nuts. Tighten the nuts starting from the center and working toward the ends to 110 in lbs (12.5 Nm).
  4. Raise and safely support the vehicle.
  5. Install the exhaust pipe to the manifold using a new flex coupler gasket.
  6. Install new exhaust flange mounting nuts.
    • Tighten to 33 ft lbs (45 Nm).
  7. Lower the vehicle.
  8. Install the oxygen sensor.
  9. Install the heat shield.
  10. Connect the negative battery cable.
2.4L Engine To Remove:
  1. Disconnect the negative battery cable
  2. Disconnect the Oxygen (O2) sensor electrical connector.
  3. Remove the (O2) sensor.
  4. Raise and safely support the vehicle. Exhaust brace 2.4L 87953053.gif

  5. Remove the exhaust manifold brace-to-manifold bolt and the oil pan nuts, if necessary. Exhaust heat shield 2.4L 87953051.gif

  6. Remove the upper heat shield. NOTE: Do NOT bend the exhaust flex decoupler more than necessary to remove it. Excessive movement will damage the flex decoupler
    Exhaust flex decoupler 87953056.gif

  7. Remove the manifold-to-exhaust flex decoupler fasteners.
  8. Remove the exhaust pipe.
  9. Carefully lower the vehicle.
  10. Remove the exhaust manifold-to-cylinder head mounting nuts/bolts. Remove the exhaust manifold.
  11. Discard the gaskets and/or seals. Clean the mating surfaces.
To Install:
Exhaust manifold 2.4L 87953055.gif

  1. Install new exhaust manifold gaskets. Position the exhaust manifold on the cylinder head. Tighten the mounting bolts in sequence to 110 in lbs (12.5 Nm).
  2. Raise and safely support the vehicle.
  3. Install the exhaust manifold heat shield. Tighten the mounting bolts to 10 ft. lbs (14 Nm).
  4. Install the exhaust manifold brace-to-manifold bolt and the oil pan nuts. Tighten the mounting bolts to 41 ft lbs (56 Nm) and the nuts to 18 ft lbs (24 Nm).
  5. Position the exhaust pipe to the manifold. Install the manifold-to-flex decoupler mounting bolts. Tighten to 26 ft lbs (35 Nm).
  6. Lower the vehicle.
  7. Coat the threads with a suitable anti-seize compound and install the O2 sensor.
  8. Connect the O2 sensor electrical connector.
  9. Connect the battery ground cable and check for leaks.
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Sep 02, 2010 | 2000 Oldsmobile Alero

1 Answer

How is the manifold removed on 2005 lincoln ls? Where is the bolt that holding it down?


Exhaust Manifold - Removal & Installation3.0L Engine
  1. Before servicing the vehicle, please familiarize yourself with safety procedures.
  2. Remove or disconnect the following:
    Negative battery cable Heat shields Lower splash shields Exhaust front pipes Secondary air tubes Exhaust Gas Recirculation (EGR) tube Exhaust manifold

To install:


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Fig. Right exhaust manifold torque sequence-3.0L engine


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Fig. Left exhaust manifold torque sequence-3.0L engine
  1. Install the exhaust manifolds. Tighten the fasteners in sequence as follows:
    1. Step 1: 15 ft. lbs. (20 Nm)
    2. Step 2: 15 ft. lbs. (20 Nm)
  2. Install or connect the following:
    Exhaust Gas Recirculation (EGR) tube Secondary air tubes Exhaust front pipes Lower splash shields Heat shields Negative battery cable
  3. Start the engine and check for leaks.

continue...

Jun 21, 2010 | 2002 Lincoln LS

1 Answer

WHERE TO LOOK FOR EXHAUST LEAK


There are several areas to check for possible exhaust leaks. i will list them below.

1. Exhaust manifold gaskets - This will be the most common area. There is a gasket that separates the block from the exhaust manifold. these gaskets can fail, thus, causing a exhaust leak at the manifold.

2. Lower manifold gasket(donut gasket) - This will be a possible leak spot as well. This small circular gasket is placed in between the upper exhaust pie and the lower side of the manifold. It basically separates the pipe from the exhaust manifold.

3. Exhaust pipe - The entire pipe can rust overtime, thus, creating small holes along the pipe structure. These holes will cause the exhaust to leak ,thus, filling the vehicle will moderate fumes and causing louder than normal engine sounds during revving.

4. Muffler - This component can also deteriorate to the point that it cannot filter out the noise. It will also cause leaks as well.

You will find the leak in one or all of the areas stated above in the list.

Jun 13, 2010 | 2006 Chevrolet HHR

1 Answer

Torque for 2004 hummer h2 exhaust manifold bolts


Exhaust manifold bolts-first pass 11 Lb/Ft. Exhaust manifold bolts-final pass 18 Lb/Ft. Exhaust manifold heat shield bolts 7 Lb/Ft. Note: To torque bolts & nuts, start in center using crisscross pattern working outward

Apr 26, 2010 | 2004 Hummer H2

2 Answers

How to change an exhaust manifold leak 7.5L


Right-Hand
Removal
  1. Remove spark plug heat shield (12A406).
  1. Remove distributor to spark plug wires (12286) using Spark Plug Wire Remover T74P-6666-A.
    1. Disconnect muffler inlet pipe.
    1. If equipped with secondary air injection, disconnect the secondary air injection check valve tube (9B480).
    1. Remove attaching bolts and right exhaust manifold (9430).
    1. Inspect joint faces for signs fo exhaust leaks, cracks or any defect that would make exhaust manifold unfit for use







Left-Hand Removal






1. Remove oil level indicator tube (6754).
  1. Remove spark plug heat shield.
  1. Remove distributor to spark plug wires using Spark Plug Wire Remover T74P-6666-A.
  1. Disconnect EGR valve to exhaust manifold tube (9D477). If equipped with air injection, disconnect the secondary air injection check valve tube.
  1. Disconnect muffler inlet pipe.
  1. Remove attaching bolts and exhaust manifold (9431).
  1. Inspect joint faces for signs of exhaust leaks, cracks or any defect that would make the exhaust manifold unfit for use.
Installation
  1. Clean mating surfaces of right exhaust manifold or left exhaust manifold and cylinder head (6049). Clean mounting flange of right exhaust manifold or left exhaust manifold and inlet pipe(s). Clean mounting surface for air injection tube or right exhaust manifold. Apply light film of Premium Long-Life Grease XG-1-C or -K or equivalent meeting Ford specification ESA-M1C75-B to right exhaust manifold or left exhaust manifold.
  1. Position right exhaust manifold or left exhaust manifold on cylinder head. Install attaching bolts and washers, starting at fourth bolt hole from front of each right exhaust manifold or left exhaust manifold. Tighten bolts to 34-47 Nm (25-35 lb-ft), working from center right to both ends.
    1. Position inlet pipes to right exhaust manifold or left exhaust manifold. Install attaching nuts and tighten to 34-47 Nm (25-35 lb-ft).
    1. Position the secondary air injection check valve tube and the secondary air injection tube gasket (9C435) at rear of right-hand exhaust manifold. Install attaching bolts and tighten to 19-25 Nm (14-18 lb-ft).
    1. Attach the secondary air injection manifold tube (9B449) to left-hand exhaust manifold fitting (located under EGR tube). Tighten nut to 30-40 Nm (22-30 lb-ft).
    1. Attach the secondary air injection check valve tube to rear of right-hand cylinder head. Tighten bolts to 75-85 Nm (56-62 lb-ft).
      1. Connect EGR valve to exhaust manifold tube to left exhaust manifold, if removed. Tighten nut to 53-72 Nm (39-53 lb-ft).
      1. Install spark plug heat shield and distributor to spark plug wires.
      1. Install oil level indicator tube to left exhaust manifold, if removed. Tighten nut to 13-24 Nm (10-18 lb-ft).
      2. Start engine (6007) and check for exhaust leaks.







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Hope this helps you...WF †

Mar 10, 2010 | 1996 Ford F250 Crew Cab

2 Answers

How to replace the water pump on 1993 oldsmoblie achieva.


2.4 enigine is the harder of the 3 enignes. it will need a timing chain to be removed and a coolant tube in the back of the engine to be removed. this job on the book calls for almost 7 hours.

if its 3.3 or 3100 its alot easier.

3100 is just 4 10mm pulley bolts and 5 or 6 small 8mm water pump bolts.

3.3 is alittle more work, but same concept as 3100 engine. more owkr only cause its in a tighter area.

good luck,
michael

Apr 29, 2009 | Oldsmobile Achieva Cars & Trucks

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Hi there, I have a 1990 Volkswagen Jetta Flair 2. I've had the car for about a year now and overall it's been an excellent car for it's age. However, there's always something that needs to be fixed and lately I've had throttle response problems. I do not have any mechanical backround, so I will describe it as best as I can. For one, it seems apparent this is an issue when the engine is cold (or not sitting in the sun all day). I will put the foot down, and it won't respond until it gets to about 3000rpm (right around when I'm thinking about changing gears), and then it rocket ships forward. Before it finally responds, there's a lot of shaking going on in the engine bay. It doesn't sound pleasant either. I took it in for an oil change, and they put fuel injector in it and it seemed to be a temporary solution. Whatever the case, there's a poor connection between me putting the throttle down and the car responding to the action. I do rev it up before I get going, but it's kind of futile. So as a result, I have a tendency to stall in first gear at low speeds as the gas doesn't react when I want it to, and the clutch is usually released by that point. After about 5-10 minutes of constant driving, it will accelerate smoothly. If you can point me in the right direction, whether it's "fuel" related, or it's some sort of heat sensor (I have no idea what I'm talking about), let me know if you've had similar experiences. All my repairs have cost me less than a 100 each time, I want to keep it that way.

Sep 05, 2013 | 1990 Volkswagen Jetta

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