How many bolts are in the intake manifold of a 2005 toyota avalon....we are trying to replace ignition coil e and cant get to it

wow, the coil pack should just unbolt.
from the service manual verbatim 3.9L
2006 , pasted just for you;.
Remove the intake manifold cover (i call the cute-se-pie covers.)
Disconnect the manifold absolute pressure (MAP) sensor electrical connector (1)

Disconnect the ignition coil electrical connector (2).

Disconnect the left side spark plug wires from the ignition coil.

Disconnect the right side spark plug wires from the ignition coil.

1. Remove the ignition coil bolts (1).
2. Remove the ignition coil nuts (2).
3. Remove the ignition coil (3).
4. Remove the ignition coil studs (4), if necessary.

best is reads the SM ,first, service manual and not make the job worse or damage things not needing to be touched.

See if any of the videos help. One says 'struggle'.

https://www.google.com/search?q=2003+Toyota+Avalon+replace+rear+bank+fuel+injectors

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These are the coils packs Michelle for the Toyota Lexus Avalon Camry Highlander Sienna range.
https://www.amazon.com/ENA-Compatible-Highlander-Replacement-C1175/dp/B00M4GKYRW

Videos that may help

https://www.google.com/search?q=99+toyota+avalon+xls+v6+replace+rear+coil+pack

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P0352 DTC code which refers to a circuit malfunction in the ignition coil , return and install correct coils and if you cant get back plugs changed take it some where to have it done .

See this YouTube video:
Toyota Avalon V6 DETAILED Spark Plug Replacement

You'll see why dealers charge upwards of $400 for this job!

Hi Eric:
Also called Ignition Coil, is located at the back of the intake manifold...



Fig.: remove the 2 lower ignition coil mounting bracket bolts...




Fig.: then remove the ignition coil and mounting bracket together from the engine.

Disengage the wiring harness connector from the ignition coil.
Disconnect the ignition wire from the coil.
Remove the coil mounting bracket bolts, then remove the coil and mounting bracket assembly from the vehicle.
The ignition coil can be separated from the mounting bracket.

To install:

If separated, loosely mount the ignition coil to the mounting bracket.
Loosely install the coil and mounting bracket assembly to the intake manifold. Tighten the coil mounting bracket-to-intake manifold bolts to 115 inch lbs. (13 Nm) and the ignition coil-to-mounting bracket fasteners to 96 inch lbs. (10 Nm).
Connect the ignition wire to the coil.
Engage the wiring harness connector to the ignition coil.
If removed, install the windshield wiper/motor module assembly.
Connect the negative battery cable.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

This is for the 3.0L engine:

3.0L Engine

1. Remove the engine appearance cover.
   
2. To access the right bank ignition coils, remove the upper intake manifold..
   
3. Disconnect the electrical connector from the ignition coils.
   
4. Remove the bolts.
   
5. Remove the ignition coils.
   

To install:

1. Replace the ignition coils.
   
2. Connect the electrical connector to the ignition coils.
   
3. Remove the upper intake manifold for the right bank ignition coils.
   
4. Replace the engine appearance cover.
   

Positive Crankcase Ventilation (PVC) Valve Removal & Installation 5.7L Engine To Remove:

1.The PCV valve is mounted into the top/right side of the intake manifold.

2.The PCV valve is sealed to the intake manifold with two O-rings.

3.Free the PCV valve by rotating counter-clockwise 90 degrees until the locating tabs align with the openings on the manifold.

4.Remove the PCV valve by pulling straight up from intake manifold and clearing the tabs.

5.Check the condition of two valve O-rings.

To Install:

1. Clean the PCV valve opening on the intake manifold.
2. Inspect the PCV valve O-rings. Replace if suspect.
3. Apply engine oil to the two O-rings.
4. Place the PCV valve into intake manifold.
5. Rotate the valve 90 degrees clockwise for installation.

6.1L Engine To Remove:

1. The PCV valve is threaded into the right-front corner of the intake manifold.
   
2. Remove the rubber hose from the PCV valve.
   
3. Unscrew the PCV valve from the intake manifold.
   

To Install:

1. Clean the PCV valve opening on the intake manifold.
   
2. Check the condition of the PCV valve O-ring. Replace if suspect.
   
3. Check the condition of the PCV valve threads and clean if necessary.
   
4. Apply engine oil to the O-ring.
   
5. Install the PCV valve into intake manifold.
   
6. Install the rubber hose to the PCV valve.
   

The spark plugs should lead to the coil pack via a spark plug wire but may be hidden by a plastic cover.

The following details the ignition coil changing on the Chrysler 300:

2.7L Engine To Remove:

1. Disconnect the negative battery cable.
2. Remove the intake manifold.
3. Use compressed air to clear the area around the ignition coil and spark plug.
4. Disconnect the electrical connector from the ignition coil.
5. Remove the two fasteners securing the ignition coil.
6. Remove the ignition coil.

To Install:

1. Install the ignition coil.
2. Tighten the fasteners to 55 in-lb (6.2 Nm).
3. Connect the electrical connector to the ignition coil.
4. Install the intake manifold.
5. Connect the negative battery cable.

3.5L Engine To Remove:

1. Disconnect the negative battery cable.
2. Remove the intake manifold.
3. Use compressed air to clear the area around the ignition coil and spark plug.
4. Disconnect the electrical connector from the ignition coil. NOTE: Loosen the ignition coil fasteners by alternating back and forth. Do not lose the spacers under the coil when loosening the fasteners.
   
5. Remove the two fasteners securing the ignition coil.
6. Remove the ignition coil.

To Install:
NOTE: Tighten the ignition coil fasteners by alternating back and forth. Do not lose the spacers under the coil when installing the coil.

1. Install the ignition coil.
2. Tighten the fasteners to 60 in-lb (6.7 Nm).
3. Connect the electrical connector to the ignition coil.
4. Install the intake manifold.
5. Connect the negative battery cable.

5.7L Engine (2005) To Remove:
NOTE: Carefully note the position of each spark plug cable before disconnecting them so they can be installed in their original positions to prevent misfire.
NOTE: The throttle body intake air duct or intake air box may need to be removed to gain access to certain ignition coils.

1. Disconnect the electrical connector from the ignition coil.
2. Remove the secondary ignition cable from the coil.
3. Use compressed air to clear the area around the ignition coil.
4. Remove the two fasteners securing the ignition coil. Bolts are retained to coil.
5. Remove the ignition coil. Pull with a slight twisting motion to help release the boot seal with the spark plugs.

To Install:
NOTE: Apply a light film of dielectric grease to the inside of the coil boots before installation.

1. Clean area around spark plug and coil mounting area with compressed air.
2. Install the ignition coil.
3. Tighten the fasteners to 105 in-lb (12 Nm).
4. Connect the electrical connector to the ignition coil.
5. Connect the secondary ignition cable to the coil.
6. Install the air duct or air box if removed.

Ignition coil mounting bolts (5.7L & 6.1L engines)

5.7L (2006) & 6.1L Engine To Remove:
NOTE: Each ignition coil, mounted on the valve cover, fires two spark plugs at each cylinder.

1. Disconnect the negative battery cable.
2. Use compressed air to clear the area around the ignition coil and spark plug.
3. Disconnect the electrical connector from the ignition coil.
4. Remove the two fasteners securing the ignition coil.
5. Remove the ignition coil. Pull with a slight twisting motion to help release the boot seal with the spark plugs.

To Install:
NOTE: Apply a light film of dielectric grease to the inside of the coil boots before installation.

1. Install the ignition coil.
2. Tighten the fasteners to 105 in-lb (12 Nm).
3. Connect the electrical connector to the ignition coil.
4. Connect the negative battery cable.

This isnt a simple job, its best that a experienced mechanic works on this. You will need special tools for access to the rear head. All sparkplugs in the 1MZFE motor are in the center of the cylinder heads. There are COPs (coil over plugs) atop the sparkplugs, these must be removed first.**With Engine Cold** Front head: 1.remove Coils 2.use 5/8th plug socket and extension w/ratchet turn ratchet counter clockwise till plug is loose. 3. install new plugs (make sure the plugs are properly gapped). Rear Head: Intake manifold must be removed (you need a very large allen wrench for the intake bolts removal). Once this is removed follow the same steps as the front head. Here is some illustrations on the 1MZFE engine: http://www.turboninjas.com/camry/eg2.pdf

HOPEFULLY THIS HELPS

You need to pull off the entire intake manifold/plenum assembly. The knock sensor is bolted to the inside of the cylinder block, it is in the middle of the culinder block.