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Old 02-25-2012, 01:15 PM   #1
Scooby Newbie
Member#: 309883
Join Date: Feb 2012
Default Coils?

Today I fixed an overheating issue on my car and since i had it apart I thought I would do a compression check. The car was running good before i did anything. i pulled the coils and plugs then did the tests. Everything was good. I did not disable my ignition system while doing this. After I reassembled everything the car is idling very slow and lopey and the motor is shaking pretty hard, it kind of sounds like a harley......When i touch the throttle it bogs and almost dies, if i hold the throttle for about 5-10 seconds it will eventually pick up engine speed. i pulled one of the coils with it running and there were no changes. I am assuming that means the coil is bad? If so where do i get coils for this car its a 1992 JDM ej20 wrx.
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Old 02-25-2012, 01:53 PM   #2
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are these ok? http://cgi.ebay.com/ws/eBayISAPI.dll...ht_2556wt_1071 is there a good place for used ones?
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Old 02-26-2012, 02:53 AM   #3
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Chapter/Region: International
Location: The Netherlands
1984 AM5, 1994 BC4,
2010 BR5


There's a good fix using USDM WRX coils. It's stickied.
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Old 02-26-2012, 04:13 AM   #4
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Chapter/Region: VIC
Location: Vancouver BC
1993 JDM WRX Wagon


The coil swap is a good idea in general. Read the sticky.

However to make the car drive-able again you should probably check all of your coils for cracks and then use dielelectric grease when re-assembling. Make sure the coil is actually in contact with the plug.

Its a tight space and easy to jamm it in there without it being lined up correctly with the top of the plug when you rush.
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Old 02-26-2012, 05:48 AM   #5
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Could you have swapped coils between cylinders? Something like swapping 1and 3? It's very easy to do and can cause similar symptoms.
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Old 02-26-2012, 06:54 AM   #6
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I don't think I swapped them but I hope I did. Where's a good place to get the newer style plugs online?
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Old 02-26-2012, 10:45 AM   #7
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Chapter/Region: NWIC
Location: Covington, WA
88 GL-10 STi


if all was good before you did your compression test and the issue started right after, i bet you swaped two coils. the cracked coils normaly dont cause that big of a problem.

i have done a few swaps to new style coils. well worth it. but if yours are fine, and just swaped, worrie about the coil swap later.

best place to find coils is on ebay, or on any subaru forum.

or if you just need one old style coil. i have a few that are good. i could sale you one for a good price.

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