Welcome to the North American Subaru Impreza Owners Club Saturday December 20, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Subaru Models > Legacy Forum

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 11-19-2007, 06:11 PM   #1
toysnyc
Scooby Newbie
 
Member#: 164703
Join Date: Nov 2007
Default Engine problem on 96L wagon Automatic

Help!
Since the weather has gotten a bit chillier, my 1996 legacy wagon is having some problems.

When the engine is cold, it idles really high and, as the engine warms up and the rpms decrease, it revs then lowers and gets real bumpy - blub, blub, blubby.

Then, CEL comes on and the car wants to accelerate.

I popped the hood while this was happeneing and saw a spark on the box connecting the spark plugs.

As the engine warms up and I drive the car, the engine starts to run smooth again.

I ahve heard of this issue with other Subaru owners but never anything about what it is, what causes it and how to fix it.

Can anybody out there provide some insight? I already called cartalk but they don't seem interested in responding.
* Registered users of the site do not see these ads.
toysnyc is offline   Reply With Quote
Old 11-19-2007, 06:30 PM   #2
JaySVX
Scooby Newbie
 
Member#: 164676
Join Date: Nov 2007
Location: Collegeville, PA
Vehicle:
1994 Subaru SVX LSi
Barcelona Red

Default

The legacy 2.5litre has hydraulic lifters, the 2.2litre may as well. If that's the case, cold starting when it's chilly may cause issues with hydraulic pressure due to the fluid condensing in colder conditions. It would certainly explain why the engine would run smooth when the car warms up. This is a real long shot, but might be worth looking into. This is also the reason your not supposed to just start up and go, you need to give it a few seconds for hydraulic system to build pressure.

Go to an auto shop and have them pull the codes that your getting on a cold start. That should give you a place to start at least. You can also buy the testers at many auto shops for as little as $50 or as much as $100.
JaySVX is offline   Reply With Quote
Old 11-20-2007, 10:36 AM   #3
toysnyc
Scooby Newbie
 
Member#: 164703
Join Date: Nov 2007
Default

Thanks for that idea - I hadn't thought of it at all. I was thinking that it might have something to do with the sparkplugs or the cables. It really feels like the engine is mis-firing.
toysnyc is offline   Reply With Quote
Old 11-20-2007, 01:21 PM   #4
jreb10
Scooby Newbie
 
Member#: 157205
Join Date: Aug 2007
Vehicle:
1998 Legacy L Wagon

Default

"I popped the hood while this was happeneing and saw a spark on the box connecting the spark plugs."

I don't think you should be seeing a "spark". How old are your spark plug wires? Start up the car in darkness and see if the wires are arcing anywhere. If they are, you should replace them. I have heard that Subarus are quite picky about their spark plug wires and you should only use genuine subaru OEM wires.
jreb10 is offline   Reply With Quote
Old 11-20-2007, 04:20 PM   #5
toysnyc
Scooby Newbie
 
Member#: 164703
Join Date: Nov 2007
Default

THanks again. I just go the CEL read and it says that cylinder four is misfiring. MAkes perfect sense too. That is where the spark is - right at the terminal where the wire meets the terminal on the engine bloc.

How do I take taht wire out? Tried it and it is hard to get to and in there really tight.
toysnyc is offline   Reply With Quote
Old 11-20-2007, 05:08 PM   #6
toysnyc
Scooby Newbie
 
Member#: 164703
Join Date: Nov 2007
Default

Just replaced them. Now I have to wait till tomorrow morning to see what happens.
toysnyc is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
A/C problem on '93 wagon Worknclassbug Legacy Forum 3 09-04-2007 10:08 PM
Engine Problems on 2.5rs farrell Normally Aspirated Powertrain 1 08-06-2006 06:46 PM
Automatic tranny problems 1984 turbo wagon boosted84wagonmonster 'Old School' Subaru Forum 1 03-11-2006 11:42 AM
Help! Air suspension problem - 1993/94 Legacy automatic station wagon 1993 Legacy Brakes, Steering & Suspension 9 12-15-2004 03:56 PM
Hesitation problem on 2001 RS automatic coloradobound Normally Aspirated Powertrain 6 08-20-2002 11:24 PM


All times are GMT -4. The time now is 12:16 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.