2005 Volvo S40 Spark Plugs - Volvo Forums - Volvo Enthusiasts Forum


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Old 05-02-2010, 02:08 AM
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Default 2005 Volvo S40 Spark Plugs

I'm brand new to the site, so please forgive me if this has been threaded somewhere else but how do I go about changing the spark plugs on a 2005 S40 2.4i? I've been searching all over the Internet for some sort of guide but these spark plugs seem IMPOSSIBLE to find.

Am I looking in the wrong place? I've been to plenty of sites that show the spark plugs for the pre-2005 S40s, but none for the 2005 2.4i?

Any help would be greatly appreciated, especially with pictures. I can change them, have the spark plugs on hand, if I could only find the darn things...
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Old 05-02-2010, 07:26 AM
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They are a pain to get to. You have to remove the upper intake plenum. There is like 8 screws or so. Then you have to unplug the throttle body and a few hoses.

Then you can remove the coils and spark plugs. Sorry no pics.
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Old 05-02-2010, 01:19 PM
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here's a "how to" regarding changing the plugs on an '05 T5. The process should be similar enough to get you taken care of.

This is courtesy of Euro3b on S40forums.freeforums.org

Here is the how to on changing the spark plugs on the T5.

Tools:
1. T-30 Star Wrench
2. Flat & Phillips screwdriver or 7mm wrench
3. 10mm socket
4. 5/8" socket

1. Whether you have an aftermarket intake or OEM one, you'll have to loosen and remove a couple items to access the engine covers. In this case we are working with an aftermarket intake.

2. First disconnect the plug that connects to the MAF sensor.
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3. Then you'll have to remove two small hoses at the back of the intake pipe.
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The other hose is a vacuum hose
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4. There are two bolts that have to be disconnected as well. This is where you'll need your 10mm socket to remove these.
Top of engine
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Side of engine
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5. Once those three connections have been disconnected then you'll have to remove the intake pipe and the back of the engine. Use your 7mm wrench or screw driver to remove the clamp.
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6. Once that has been loosened, just use some force to remove the intake tube.

7. To access the spark plugs you'll need to remove the engine covers. Use your T-30 Star wrench to remove the bolts the hold down the engine cover. (You'll MOST likely have to remove the oil cap to remove the engine cover)
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8. Once the engine covers have been removed now its time to use your 10mm socket to loosen the bolts that hold down the coil packs.
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9. Use your flat head screw driver to place under the coilpack and push up. You'll hear a suction cup "pop" when the coilpack has been popped off.
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10. Now you'll need your 5/8 socket to remove the 5 spark plugs.
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11. Now when putting your new plugs in and tightening up the new plugs first hand tighten the plug.
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Then you'll want to about quarter turn the plug to insure tightness
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Notice the difference?

12. Once all plugs have been replaced its a matter of just reversing your steps.

13. Make sure all connections have been placed together.

14. There you have it, you have replaced you spark plugs.

Hope this helps you when you want to replace your spark plugs yourself

Rich
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Old 05-02-2010, 01:44 PM
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That is for the turbo. The N/A is a little different.
But none the less the plugs are in the same spot. To get to them is a little different.
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Old 05-03-2010, 01:15 AM
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Yeah but like I said, it will get him going in the right direction.
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Old 05-03-2010, 09:53 AM
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Thanks! Like Matt said, it will lead me in the right direction. I'll give it a shot next time I'm off work and have the opportunity to do so.
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Old 05-03-2010, 09:16 PM
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Good luck. I just did a N/A set on Friday. If I had my Camera at work I could have taken pics.
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Old 05-03-2010, 11:33 PM
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Just as a follow up, based on the pictures that you posted, I was able to get a general idea of what to do.

I did, however, run into a little bit of trouble. First, the engine cover was not coming off all the way. Since I simply wanted to ACCESS the spark plugs and know where they were, I kept working on the plug furthest to the left and after some time, was able to get the boot off. I replaced that one, put everything back together (I plan on finishing the rest of them on my next day off work) but when I turned the car on, it ran for about 5 seconds before dying.

Clearly, I did something wrong. I did my best to retrace my steps and make sure I plugged everything in back the way it was. Is it just a misfire? Do these symptoms sound familiar? The engine turns, starts normal but sputters and dies within seconds...
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Old 05-04-2010, 09:49 PM
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Did you unplug the throttle body and forget to plug it back in?
Is the vacuum line under the cover plugged in it is hard to see feel for it like under the throttle body.
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Old 05-05-2010, 08:23 AM
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WOW! Mad Matt - that is by far the most detailed DIY I have seen on this forum. I have seen detailed DIYs on forums for other cars but not here. I don't need this info right now but you are a very valuable resource on this forum.

Thanks from all of us seeking help!
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Old 05-05-2010, 10:08 PM
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Quote:
Originally Posted by Mad Matt View Post
It is a very good "How-to". Might want to cover the oil fill and the end of the turbo plumbing. It would be a real pain if something fell in there.
Stan
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Old 05-06-2010, 02:51 PM
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Thanks I am a master copy/paster. Lol.
All credit for this Wright up goes to Euro3b from the s40forums.
And +1 to what AutoNaut said.
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Old 05-06-2010, 02:52 PM
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Edit:
Oops, Double post.

Last edited by Mad Matt; 05-06-2010 at 03:25 PM.
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