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Old 05-20-2003, 09:45 PM   #1
ITWRX4ME
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Default WRX - Coil Connector - Changing Spark Plugs

I going to change my spark plugs tomorrow and I wanted to make sure I understand how to disconnect the coil connectors. I have the manual but they're not very explicit. I just didn't want to tear into the job before I fully understood how to remove them. I know they'll be hard to see.

Any advice would be appreciated.

Jim
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Old 05-20-2003, 11:52 PM   #2
Axis Power Racing
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Just make sure when you put them back together, that the white connector goes to the front coil on each side.
I probably wouldn't disconnect them, I never had to but whatever.
It's not that hard a job.
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Old 05-21-2003, 12:05 AM   #3
JayGold
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Some tricks I have learned fom removing the plugs:

Drivers side is more difficult, remove the washer tank (dont pull on the line coming off the pump on the motor side of the tank, remove it gently). Remove the battery tie down, unplug the large connectors behind it (3) and slide the battery as far forward to the headlight as humanly possible. With a wrench and 12mm short socket you can remove the one bolt holding each coil. Pull the coil pack straight out of the head. I never unplug the coils, but as Ron stated, keep the white connector on the coil upfront. Remove the plugs as you normally would but take your time and be careful not to scrape the plug threads against the inner walls of the head.

Pass side is much easier, remove air box, and do the same as you would on the drivers side. Make sure to reconnect the brass colored O2 sensor wire holder when reinstalling the pass rear coil pack.

Most importantly, MAKE SURE YOU RECONNECT THE COIL PACK PROPERLY (ie. be positive you have aligned the spout end of the coil pack onto the spark plug, and recheck this by slowly pulling it off the plug, but not all the way and feel for a suction type of connection of the plug) and do not overtighten any of the coil pack bolts or plugs. Follow manufacturer specs.

Good Luck
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Old 05-21-2003, 12:11 AM   #4
nizz
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If you do unplug the coils, a good way to remember the connectors is by remembering that "black is back".

nizz
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Old 05-21-2003, 11:28 AM   #5
ITWRX4ME
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I was just going by the Service Manual. It never even occured to me that I could remove the coil without disconnecting the wires because the manual says to remove the connectors.

So, I should be able to just remove the bolt that holds the coil in place and leave the wire connected, right?

Jim
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Old 05-21-2003, 11:40 AM   #6
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Quote:
Originally posted by ITWRX4ME
I was just going by the Service Manual. It never even occured to me that I could remove the coil without disconnecting the wires because the manual says to remove the connectors.

So, I should be able to just remove the bolt that holds the coil in place and leave the wire connected, right?

Jim
Thats correct. You dont even have to remove the bolt all the way, remove it half way and you'll see that it sits in a barrel with some movement to pull it out with the coil pack as a whole keeping the bolt, coil and connector assembled.

You'll see when you unscrew the coil bolt by hand.
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Old 05-21-2003, 12:06 PM   #7
WRX Jim
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remove the connecter, its easy enough.

You do not need to move the battery for the driver side one. Jut remove the winsheild wiper fluid bottle..

The other side just remove the airbox.

The job is relativly easy, i dont understand why people have so many problems with it.
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Old 05-21-2003, 12:40 PM   #8
ITWRX4ME
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Quote:
Originally posted by WRX Jim
remove the connecter, its easy enough.

You do not need to move the battery for the driver side one. Jut remove the winsheild wiper fluid bottle..

The other side just remove the airbox.

The job is relativly easy, i dont understand why people have so many problems with it.
I haven't even tried it yet. I just looked at the manual and, true to form, it says remove the connectors without any further explanation for how.

It's been my experience that every g...d... connector is different and they're not always obvious in the manner in which to go about disconnecting them. As an example, I broke the latch for the under-hood fuse box because I kept prying on it while trying to get the lid to lift. The electrical connectors have many different ways of disconnecting and there's never a clear "press here while pulling here" kind of explanation. I once spent half an hour trying to disconnect the OBD II connector from the dash panel, just so I could get the dash panel out of my way for some wiring I was doing.

Yes, I'm an idiot. So, rather than poke around, trying to figure out how to disconnect connectors that are barely reachable and are probably not completely visible, I figured I'd ask the fine, upstanding, experienced members of NASIOC for some guidance.

As usual, I got answers to questions I didn't even ask, which is both good and bad. Good in that now I see I don't have to disconnect the connectors, bad in that, if I'd wanted to disconnect them, I still have no clear explanation of how to do it.

Nonetheless, thanks to everyone for their responses. You've been very helpful. I will not disconnect, only unbolt.
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Old 05-21-2003, 05:05 PM   #9
WRX Jim
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u push a tab and u pull the connector off. its easy.
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Old 05-22-2003, 10:48 AM   #10
ITWRX4ME
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What a pain in the toches! That wasn't changing spark plugs. That was more of a gymnastic, contortionistic excercise, laden with expletive.

Did someone say changing the sparkies was easy on the WRX? I lost count of the number of times I dropped the 12mm short socket trying to get the coil bolts off. And, of course, it doesn't fall on the floor. It falls on the front plastic 'skid plate'.

No matter which combination of extensions and u-joints I used, something was in the way. Hey, Subaru, a little more curvature in the sheet metal next to the heads would do wonders for productivity.

And forget using a torque wrench on the passenger side. I have no idea if I got the torque right. I practiced with the torque wrench on a different bolt to get the feel of 10 ft/lbs but that doesn't necessarily translate when using the ratchet in a different position and with a different grip. (I know it's supposed to be 15 ft/lbs, but the Subie manual says to reduce it by 1/3 if you put oil on the threads).

That's the hardest job I've done on the car so far, considering that changing spark plugs should be a no brainer. I can't wait to replace my clutch.

Oh, and removing the rear driver's side coil is easier if you unclip the connector. Once the connector is off, there's 1mm more clearance and it comes right out.

Okay. Done venting.
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Old 05-22-2003, 10:56 AM   #11
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im doing mine this weekend...should be ALOT of fun
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Old 05-22-2003, 11:03 AM   #12
ITWRX4ME
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Keep the kids out of earshot.
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Old 05-22-2003, 11:29 AM   #13
WRX Jim
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What did u have so much trouble with

i used a rachet, an small 3 inch extention, a 1 inch extention and a 5 inch extention , 12mm socket and spark plug socket.

it was pretty damn easy compare to the hype people put on it.
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Old 05-22-2003, 12:24 PM   #14
ITWRX4ME
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WRX Jim, you are my god. When I change over to colder plugs, I'll give you a shout and you can show me your technique.
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Old 05-22-2003, 03:20 PM   #15
WRX Jim
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lol!

Ill be more than happy to help you out if u drive up

its really simple, i dont understand what people are complaining about. lol

When i went into doing it at first, i feared my life.

When i finished.. i sorta wonderred why everybody had their panties in a bunch.

Its pretty easy if you ask me. Just a little more work involved than a usual plug change.
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Old 05-22-2003, 08:31 PM   #16
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I've swapped/checked my spark plugs so many times it all comes down to a 1/2 hour entire job, from the moment I start unclipping the stock air box

It took me several attempts to find a consistent method for removal of cylinder #2 (DR Front) it may be my wrist/forearm but it is not comfortable, thats why I unbolt and slide the battery out of the way.

Congrats on the DIY plugs swap.
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