Question about 2004 Chrysler Pacifica

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On a 3.5L Pacifica do you have to take off the Plenum to take out the spark plugs on the front side of the engine?

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You mean the back......front side easy, back side hard. You may. I have not done a Pacifica yet

Posted on Sep 24, 2009


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How do I change the spark plugs on a 2007 Chrysler Pacifica?

the upper plenum will need to be removed on the 4.0 liter. Once the plenum is out of the way the coils can be removed and the plugs replaced.

on the 3.8 liter remove the plug wires from the plugs one at a time and replace that spark plug. Place the wire back on the plug as soon as it is installed and move on to the next.

Oct 08, 2016 | 2007 Chrysler Pacifica Touring

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Trying to find spark plugs on 2007 ford freestye

Trying to find spark plugs on 2007 Ford Freestye The Three looking at the engine from the front are quite visible but the three on the fire wall side could be challenging for a DYS machcanic which you have to take the plenum and accories off to acess the spark plugs

Jun 24, 2014 | 2006 Ford Freestyle

1 Answer

How u change spark plugs

Hi there:

First I suggest purchase the spark plugs from your local auto parts dealer. Make sure to indicate the year, make and model of your vehicle to make sure you get the proper spark plugs. Locate the spark plug wires that run from the distributor cap to the cylinders on the left side of the engine. Use an 8 mm socket to remove the bolt that holds the coil pack on the cylinder, put the bolt in a safe place and pull the coil off. You only want to work on one spark plug at a time so you don't get the wires mixed up.

Insert the 3/8 or 5/16 inch hexagon socket and extension into the spark plug cavity and turn counterclockwise very carefully. Once the spark plug is free, bring it out of the cavity and put it to the side.
Place a new spark plug in the cavity threads pointing up and tighten until snug in a clockwise direction. Repeat for the other two spark plugs in this area.

Rear Spark Plugs
Position yourself so you can see the throttle body. There will be an Exhaust Gas Recirculation (EGR) valve on the front part of the plenum, which is right behind the throttle body.
Use a 10 mm socket to remove the two EGR valve bolts and nuts. Turn these in a counterclockwise direction and put them in a safe place. This will help release the EGR tube. If it does not release the tube, pull the tube to disconnect it.
Grab the gasket that is located between the two bolts, remove it, and put it to the side. Replace the gasket when you put things back together.
Move to the passenger side of the plenum and find the vacuum switch. Pull the hoses off and disconnect the electrical wiring by pulling it away from this area.
Find the eight bolts that hold the upper intake plenum on the back two cylinders and remove them in a counterclockwise direction. Grab the sides of the plenum and rotate up and towards the driver's side of the vehicle. This will give you access to the rear spark plugs. The gasket on the plenum is reusable unless it is damaged.
Use a 3/8 or 5/16 inch socket and extension to remove the spark plugs. Insert the socket and extension into the cavity and rotate in a counterclockwise direction. Be careful while removing and replacing the spark plugs as they are delicate and you don't want them to break, especially while in the spark plug cavity.
Replace with new spark plugs, with the thread side up. Put the plenum back in the reverse order.

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Thank you for using FixYa, have a nice day.

Jun 20, 2012 | 1996 Mercury Sable

1 Answer

Diagram where are spark plugs in 2004 Chrysler Pacifica and how to replace them

They are under the coil packs. The rear three can be replaced easily with a male 25 torx socket and a 5/8 plug socket. However, the front 3 require removing the air intake plenum first. There are several sensors that need to be unplugged. Also the throttle linkage needs to be unhooked. Several bolts around the edge of the plenum that hold the oil fill, dipstick, support bracket, etc. Also the intake hose clamp needs to be removed. Finally there are seven bolts that hold the plenum to the intake. These 7 bolts have loctite on them that needs to be cleaned off and new applied during installation. Take your time and the plenum comes off easily. Be especially careful not to drop anything down the intake once the plenum is removed. The good news, Chrysler says 70,000 between changes so you don't have to do it very often.

Here is a link to dl the manual as I was unable to find a diagram. Hope this helps some.
Good luck.

May 09, 2011 | Chrysler Pacifica Cars & Trucks

1 Answer

Tryimg to find out where the spark plugs are

You need to remove the cover and you'll see the coil packs (a 2.5 sq inch block). You'll see three plugs in front of the plenum and the other three are under the plenum. You'll have to remove the plenum to get to them. You will have to remove everything around the plenum to get it off. Once the pack is removed you'll be able to see down in there to remove the plug. You'll need a long socket extension to get to them. You won't find traditional plug wires because of the coil packs.

Here's a motor shot without the cover:

Oct 10, 2009 | 2004 Chrysler Pacifica

1 Answer

Changing the spark plugs on a 2000 forerunner

the upper intake will have to remove the plenum to access the spark plugs...usually you are able to unbolt the plenum only and disconnect the front connectors and/or vacuum lines. and tilt the plenum up and out of the way to access the plugs... take care when doing this you can damage the engine if not careful. make sure you get a new intake plenum well as the valve cover gaskets...the rubber rings that seal the spark plug tubes from oil tend to leak causing a misfire. you already have to pull the plenum might as well do the valve cover gasket while you are so far in it.

Aug 22, 2009 | 2000 Toyota 4Runner

3 Answers

Spark plug location on sebring convertible

Depending on the tightness of the socket fit and the engine, carefully pull the spark plug out of the bore

Hope this helps that I can find!

Jun 30, 2009 | 1998 Chrysler Sebring

2 Answers

How to change spark plugs on 2006 dodge magnum v6

you are going to have to take it to a shop unless yo have the tools and the time to take the covers off that are on the engine then follow the wires from the distributor to the spark plugs and do them one at a time.

Jun 24, 2009 | 2006 Dodge Magnum

1 Answer

Where are the spark plugs on an 05 3.5 liter chrysler pacifica?

Each of the plugs has it's own coil so they are under the swaure coil, you won't see traditional spark plug wires, look for sets of two wires headed for ~ 2.5 inch square block, three plugs can be seen in front of the large plastic air plenum, the uther three are underneath the plenum. Takes a real handy DIY person to do this as there are plenty of things to remove before the plenum comes off. Take good notes on how you remove things, I missed a lever that is part of the idle system and throught I messed things up bac\d, but when I located the correct place to attach the lever it was fine. Also be careful and not break a connector to the individual coils. I did, but was able to glue it together...

Mar 20, 2009 | 2005 Chrysler Pacifica

1 Answer

Spark Plug Location 1997 Toyota 4 Runner ?

They are under the plenum. Hard to get to unless you remove the plenum.

Feb 07, 2009 | 1998 Toyota 4Runner

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