Changing sparkplugs on the 4.0 Pacifica - Page 2 - Chrysler Forum - Chrysler Enthusiast Forums

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Old 04-25-2008, 03:33 PM
Join Date: Sep 2007
Posts: 72
Default RE: Changing sparkplugs on the 4.0 Pacifica

I called two dealers to find out how much$ a tune up would cost. The firts place said it would $130. and nothing had to be taken off the 4. L (he thought) but because the plugs are the more expensive ones that's why it is $130. The second dealer told me up front the tun up had to remove the manifold and the plugs were more, total price was $200. + tax. The first guy had never done a tune up on a PAC 4.L. Is this the very first year for this engine? I know it is a quick, engine and sure gets good mpg.

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Old 04-25-2008, 04:47 PM
Join Date: Feb 2008
Posts: 39
Default RE: Changing sparkplugs on the 4.0 Pacifica

07 was the first year for the 4.0L. Based on the 3.5L,which on the Pac you had to remove the upper intake. LX cars with the 3.5L have to have the inake removed as well. Other applications for this engine I believe you do not have to remove the intake.
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Old 04-25-2008, 09:15 PM
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Join Date: Mar 2008
Posts: 144
Default RE: Changing sparkplugs on the 4.0 Pacifica

From the service CD

Always remove the ignition coil assembly by turning the assembly 1/2 turn and pulling straight back in a steady motion.
1. Disconnect the negative battery cable.
2. Remove engine cover.
3. Remove the intake manifold, (Refer to 9 - ENGINE/MANIFOLDS/INTAKE MANIFOLD - REMOVAL).
4. Prior to removing the ignition coils, spray compressed air around the coil area and spark plug.
5. Disconnect electrical connectors (1).
6. Remove the ignition coil (3).
7. Remove spark plug.

Sounds like a big job. No plug wires ... each plug has its' own coil and the plugs are inside a "plug tube" which is under the manifold. WOW.
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Old 07-21-2014, 05:08 PM
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Join Date: Oct 2013
Posts: 12
Default Changing timing belt on 2007 pacifica 4.0

HI I am going to change a timing belt on my 2007 pacifica with a 4.0. my question is how do you get all the slack out the belt between the cam gears.. do i need to move a gear to mesh up with the teeth so it will have the right tension.. also any ideals on taking pressure the tensioner off with out having a lot kick .. this be my first 4.0
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Old 07-30-2014, 06:06 PM
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Join Date: Oct 2013
Posts: 12
Default Thanks

Thanks everbody
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