Welcome to the North American Subaru Impreza Owners Club Thursday May 7, 2015
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 09-29-2003, 01:51 PM   #1
Benjamin Tang
Scooby Guru
 
Member#: 4496
Join Date: Feb 2001
Location: British Columbia Canada
Vehicle:
2009 Forester
red

Default help/comments w/rough idle issues?

i have a 1995 legacy with an AT ej22 non-turbo.

in the last few months the idle has gradually not been the best when stopped with the transmission in drive. if i go to park or neutral it feels fine, but if it's in gear there are uncomfortable vibrations coming up thru the steering wheel and seat. it is at it's worst when the a/c and cooling fans come on.

i have gone to the dealer expecting it to be transmission related, but the mechanic says he could not find any fault, and says it's because of the UR unorthodox pulley that is installed, which is causing the idle to drop 200rpms below what is norm (800-850rpms?). it's not something that u can adjust from the throttle body, but is a function of the ecu, which he cannot remap.

what i cannot understand is that i've had this pulley for almost 2 years and it's only been recently i'm having these problems...

does ne1 have any similar experiences or comments they can share? the pulley has been a useful mod to this anemic engine and i hope to keep it on the car, but if there is no solution....
* Registered users of the site do not see these ads.
Benjamin Tang is offline   Reply With Quote
Old 09-30-2003, 01:53 PM   #2
VOLTIS5
Scooby Specialist
 
Member#: 2353
Join Date: Sep 2000
Location: look outside your window......
Vehicle:
98' LegOver GT
dark whiteish pearly red

Default same here

mine does the same when the car is idleing between 1k-1500. i took it to the dealership and they said the same thing, "Its those light weight pulley thats making it". I told them i had this problem before i even installed the LWP but they wouldn't listen. So i just left it there and didn't even bother to put in the OEM back. So far no problems (knock on wood).
VOLTIS5 is offline   Reply With Quote
Old 09-30-2003, 02:15 PM   #3
subster
Scooby Newbie
 
Member#: 40847
Join Date: Jul 2003
Chapter/Region: MWSOC
Location: Minneapolis, MN
Vehicle:
2008 2000 2.5 RS
1995 SVX

Default Subarus shake. Period.

They all do that. It's probably the engine mounts. All I know is that the new Legacy's coming out have a feature on the automatics where if it sits in drive for a certain amount of time with the brake on, it will automatically switch to nuetral. I don't know how or when it switches back though that's just something that I read.
subster is offline   Reply With Quote
Old 09-30-2003, 02:27 PM   #4
Benjamin Tang
Scooby Guru
 
Member#: 4496
Join Date: Feb 2001
Location: British Columbia Canada
Vehicle:
2009 Forester
red

Default

we've owned this car since new (1995). it's only started being this bad recently
Benjamin Tang is offline   Reply With Quote
Old 09-30-2003, 02:59 PM   #5
subster
Scooby Newbie
 
Member#: 40847
Join Date: Jul 2003
Chapter/Region: MWSOC
Location: Minneapolis, MN
Vehicle:
2008 2000 2.5 RS
1995 SVX

Default

So, you're not just talking about the regular vibration by the engine. The one that's usually worse when it's cold outside or the AC is on?
subster is offline   Reply With Quote
Old 09-30-2003, 03:40 PM   #6
Benjamin Tang
Scooby Guru
 
Member#: 4496
Join Date: Feb 2001
Location: British Columbia Canada
Vehicle:
2009 Forester
red

Default

it's not temperature dependent. it begins the minute u start for the first time in the day and dosen't end.
Benjamin Tang is offline   Reply With Quote
Old 09-30-2003, 03:46 PM   #7
subster
Scooby Newbie
 
Member#: 40847
Join Date: Jul 2003
Chapter/Region: MWSOC
Location: Minneapolis, MN
Vehicle:
2008 2000 2.5 RS
1995 SVX

Default Is it knocking?

Check the plugs? I had a loose main drive pulley and that made the car vibrate. It RREEEAAAAALLLLLLYYY needs to be tight on there. Watch the belts with the car running and see if the vibration is from some thing off balance. Or maybe the harmonic balancer? I'm not sure.
subster is offline   Reply With Quote
Old 09-30-2003, 04:08 PM   #8
Benjamin Tang
Scooby Guru
 
Member#: 4496
Join Date: Feb 2001
Location: British Columbia Canada
Vehicle:
2009 Forester
red

Default

what is this harmonic balancer?

the belts that came with the pulley slip a little when cold. the tensioner is all the way to the top, and it goes away once things warm up.

i never thought about the plugs... the car has something like 50k mi on it... is it time yet?
Benjamin Tang is offline   Reply With Quote
Old 09-30-2003, 04:38 PM   #9
subster
Scooby Newbie
 
Member#: 40847
Join Date: Jul 2003
Chapter/Region: MWSOC
Location: Minneapolis, MN
Vehicle:
2008 2000 2.5 RS
1995 SVX

Default Harmonic balancer.

I don't know what it is either. But yes it's time to change the plugs. Every 30,000 miles. NGK spark plugs are good. I run Bosch Platinum +4's. Don't get Splitfires. Also change the spark plug wires when you do the spark plugs.

At I think 60,000 miles you should change the two O2 (oxygen) sensors which are right in front of each of the two catalytic converters along the exhaust system.

That's another thing though.

You can change the plugs yourself as well as the wires.

Do all of those things: look at the belts and pulleys while the car is running but don't stick your hands in there, change the spark plugs & wires (also known as a tune up), and find out what the heck a harmonic balancer is.
subster is offline   Reply With Quote
Old 09-30-2003, 04:43 PM   #10
Benjamin Tang
Scooby Guru
 
Member#: 4496
Join Date: Feb 2001
Location: British Columbia Canada
Vehicle:
2009 Forester
red

Default

i don't have my service manual in front of me, but the car is always dealer serviced so i hope the plugs were done...
Benjamin Tang is offline   Reply With Quote
Old 09-30-2003, 04:50 PM   #11
subster
Scooby Newbie
 
Member#: 40847
Join Date: Jul 2003
Chapter/Region: MWSOC
Location: Minneapolis, MN
Vehicle:
2008 2000 2.5 RS
1995 SVX

Default You mentioned reduced power?

Is that correct? It sounds like knocking to me. Sometimes there are bad spark plugs. What kind of gas do you use? Try a fuel additive. I think you need to use 85 or 87 octane or better is what I recall. I'm sure the dealer did your spark plugs, but check your records the statement they give you has an itemized list of what was done as well as any notes on problems they may have noticed.
subster is offline   Reply With Quote
Old 09-30-2003, 04:52 PM   #12
Speedwagon
Scooby Specialist
 
Member#: 19681
Join Date: Jun 2002
Chapter/Region: RMIC
Location: Denver, CO
Vehicle:
1998 Legacy Wagon GT
Green

Default

We don't have harmonic balancers. They are used to balance the vibrations of an engine. Go take a peak at some american V8's, and you'll see a massive pulley on the crankshaft. That doubles as a harmonic balancer. Horizontally opposed engines typically don't need them. They basically act like the weights they put on your wheels to kill vibrations.
Speedwagon is offline   Reply With Quote
Old 09-30-2003, 04:53 PM   #13
subster
Scooby Newbie
 
Member#: 40847
Join Date: Jul 2003
Chapter/Region: MWSOC
Location: Minneapolis, MN
Vehicle:
2008 2000 2.5 RS
1995 SVX

Default Thanks SPEEDWAGON

subster is offline   Reply With Quote
Old 10-01-2003, 12:18 AM   #14
VOLTIS5
Scooby Specialist
 
Member#: 2353
Join Date: Sep 2000
Location: look outside your window......
Vehicle:
98' LegOver GT
dark whiteish pearly red

Default

isn't a harmonic balancer the same thing as a crank pulley or serve the same purpose?
VOLTIS5 is offline   Reply With Quote
Old 10-01-2003, 05:55 AM   #15
Speedwagon
Scooby Specialist
 
Member#: 19681
Join Date: Jun 2002
Chapter/Region: RMIC
Location: Denver, CO
Vehicle:
1998 Legacy Wagon GT
Green

Default

Yes and no. A Harmonic balancer is integrated into the crank pulley, but it differs from a crank pulley in that it is balanced a certain way, and weighted. Our crank pulleys are just heavy cuz they are cheap steel, and only balanced in the sense that they are symmetrical.
Speedwagon 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
2006 Impreza 2.5i Power/rough idle issue subarumafia700 Normally Aspirated Powertrain 3 02-22-2010 07:46 PM
Rough Idle, occasional stalling...fuel issue? Madmike05STi Newbies & FAQs 18 10-04-2009 09:22 AM
stalling and rough idling issue nJDMmaster Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 9 08-20-2008 11:46 AM
Rough idle issue solved via TSB sticky!!! Gregmatic Baja Forum 0 03-07-2006 11:49 PM


All times are GMT -4. The time now is 02:15 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2015 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.