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#1: 01-28-2013, 07:19 PM
Rough idle, engine sputter/misfire.
 
 JayInVA
Title: Member
Location: Central VA
Car: 2005 Subaru Legacy 2.5i
Posts: 123
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Noob here. Longtime lurker/first time poster. I've been helped quite a bit by reading these forums and have bookmarked quite a few threads that I refer to from time to time (Thanks!).

So I have a 2005 Legacy 2.5i NA/non-turbo with about 180k miles on it.

A few week ago I noticed that, on acceleration, the car sputtered quite a bit and misfired a few times. Figuring I needed new spark plugs (I did), I replaced them with the help of GEE-OTTOs tutorial (and it only took an hour or so!).

That pretty much solved the problem. It ran perfectly.

For about a week.

Now, when the car is idling in drive, the idle is very rough and the engine will randomly sputter/shake. It's like a hiccup. From what I can tell, this only happens while idling in drive. Occasionally it will sputter just at take-off/initial acceleration but that's only when I start while the engine is 'hiccuping.'

This has been going on for about a week now and the hiccuping has becoming increasingly frequent. I really hope I'm not doing too much damage by driving it like this but I have no other way to get to work (it's only a 3 mile drive so it's not putting a ton of mileage on it).

Any ideas on where to start? I've searched these forums extensively and have a few ideas but just not quite sure.

Thanks in advance!
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