Welcome to the North American Subaru Impreza Owners Club Sunday December 21, 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 Technical > Normally Aspirated Powertrain

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 07-27-2003, 08:36 PM   #1
JewPac42
Scooby Guru
 
Member#: 23260
Join Date: Aug 2002
Chapter/Region: BAIC
Location: -=3/1 Jew Crew=-
Vehicle:
Patr ick Willis
for Rookie of the year

Default Mechanical Noise Coming from Engine

I have a strage mechanical noise coming from my engine and I cant fidure out what it is. At first I thought it was my power steering pump, but when I turn the wheel the noise doesnt change in volume or intensity. Then I thougt it might me the A/C compressor but when I turn the A/C on the noise doesnt go away. The volume of the noise becomes louder when RPM's increase. I cant seem to figure out what it is. Has anyone had a similar problem? If so, what did it turn out to be? If it matters my mods are COBB CAI, Tanabe Hyper Medallion cat back, 5zigen lowering springs, Cusco Rear sway bar, kartboy short shifter (noise started a couple of days after this was installed), ACT clutch. Thanks for you help.
* Registered users of the site do not see these ads.
JewPac42 is offline   Reply With Quote
Old 07-28-2003, 12:48 PM   #2
JewPac42
Scooby Guru
 
Member#: 23260
Join Date: Aug 2002
Chapter/Region: BAIC
Location: -=3/1 Jew Crew=-
Vehicle:
Patr ick Willis
for Rookie of the year

Default

Anyone? Also I am a little late for my 45,000 mile service. Could it just be that I need routine service and that will take care of the noise?
JewPac42 is offline   Reply With Quote
Old 07-28-2003, 12:53 PM   #3
Jard
In the silly seat
Moderator
 
Member#: 34935
Join Date: Apr 2003
Chapter/Region: MAIC
Location: Silver Spring, MD
Vehicle:
SPB- 2013 Smugmobile
and DADCORE

Default

I would say uninstall the short shifter and see if that clears it up. I installed my Kartboy shifter and bushings and definitely get some gear whine/noise from that.
Jard is offline   Reply With Quote
Old 07-28-2003, 01:19 PM   #4
JewPac42
Scooby Guru
 
Member#: 23260
Join Date: Aug 2002
Chapter/Region: BAIC
Location: -=3/1 Jew Crew=-
Vehicle:
Patr ick Willis
for Rookie of the year

Default

Quote:
Originally posted by STiJard
I would say uninstall the short shifter and see if that clears it up. I installed my Kartboy shifter and bushings and definitely get some gear whine/noise from that.
Could you tell where thre noise was coming from? Mine sounds like it is coming from the engine bay and not the tranny. But I will try you suggestion when I get home tonight and post the results.
JewPac42 is offline   Reply With Quote
Old 07-28-2003, 02:24 PM   #5
kickin_81
Scooby Newbie
 
Member#: 16679
Join Date: Mar 2002
Location: MN
Vehicle:
2004 Forester XT

Default

Is it cold there in Alizee's pants? Does it get more quiet as the car warms up? If so, then you may have a defective timing belt tensioner. That's a warranty issue your local Subaru dealer could help you with. I remember my car had a very loud knocking around the alternator area in the winter season. I took it in, and it was fixed at the dealer the same day. I had that happen to me two times already. They said that the first one was a probably a bad part, that's why I had to take it in a year later. Hope it helps.
kickin_81 is offline   Reply With Quote
Old 07-28-2003, 03:01 PM   #6
JewPac42
Scooby Guru
 
Member#: 23260
Join Date: Aug 2002
Chapter/Region: BAIC
Location: -=3/1 Jew Crew=-
Vehicle:
Patr ick Willis
for Rookie of the year

Default

Quote:
Originally posted by kickin_81
Is it cold there in Alizee's pants? Does it get more quiet as the car warms up? If so, then you may have a defective timing belt tensioner. That's a warranty issue your local Subaru dealer could help you with. I remember my car had a very loud knocking around the alternator area in the winter season. I took it in, and it was fixed at the dealer the same day. I had that happen to me two times already. They said that the first one was a probably a bad part, that's why I had to take it in a year later. Hope it helps.
It does seem to get a little quieter as the car warms up. However it is hard to hear due to the intake/exhaust combo. Was this part recalled becuase my warranty is over since it has been more then 3 years since the car was purchased. Also, if this is the problem wouldnt all the belts and tensioners be replaced at the 45,000 miles service? If so, just getting this service would eliminate this noise. But the description of your problem sounds very similar to what I am experiencing, although it isnt really a knocking sound, it kind of sounds like the power window motor noise when I roll my windows down.
JewPac42 is offline   Reply With Quote
Old 07-28-2003, 03:04 PM   #7
ciper
Scooby Guru
 
Member#: 15543
Join Date: Feb 2002
Location: san francisco, ca
Vehicle:
90BJ Legacy LS ABS
AWD 946 Rio Red Jpn built

Default

I also have a mechanical noise coming from my engine bay. It changes as I press the accelerator.

It almost sounds like pistons moving inside of a cylinder with 4 valves above each, then some fuel is ignited and the left over gases leave the engine. I also think I hear water being pumped and possibly some oil being pumped. Then at random times I swear it sounds like a fan or two is running.

your post is extremely vague
ciper is offline   Reply With Quote
Old 07-28-2003, 03:06 PM   #8
8Complex

Moderator
 
Member#: 922
Join Date: Feb 2000
Chapter/Region: MWSOC
Location: Schaumburg, IL
Vehicle:
04 FXT
Red

Default

Does it go away if you disengage the clutch?

If it appears to come from the front of the motor and nothing but revs effect it, I would say to pull the accessory belts and see if that changes it, and if not... look into a timing belt idler pulley that has gone bad. I had one go bad on me that had the teeth on it and it ended up screwing up far more then the belt (pass. side exhaust valves, pass. side pistons) when it caused the timing belt to jump teeth.
8Complex is offline   Reply With Quote
Old 07-28-2003, 03:39 PM   #9
JewPac42
Scooby Guru
 
Member#: 23260
Join Date: Aug 2002
Chapter/Region: BAIC
Location: -=3/1 Jew Crew=-
Vehicle:
Patr ick Willis
for Rookie of the year

Default

8-Complex, no it does not go away if I disengage the clutch. I am not that technical and would worry about screwing a bunch of stuff up if I start messing with belts and whatnot. Also, if this is the problem, doesnt the timing get adjusted at minor/major services (15K, 30K, 45K etc.)? If so, that would fix this if that is the problem.

Ciper- How can I make it less vague? Ask me something you need to know to help diagnose the problem. I tried to be as specific as possible when I posted.

EDIT: Just thought of something else. Could this possibly be an exhaust leak?
JewPac42 is offline   Reply With Quote
Old 07-28-2003, 10:00 PM   #10
8Complex

Moderator
 
Member#: 922
Join Date: Feb 2000
Chapter/Region: MWSOC
Location: Schaumburg, IL
Vehicle:
04 FXT
Red

Default

Are you still under powertrain waranty? (60k/5 yrs, IIRC) If so, I'd say bring it in and let them worry about it.
8Complex is offline   Reply With Quote
Old 07-28-2003, 10:33 PM   #11
ciper
Scooby Guru
 
Member#: 15543
Join Date: Feb 2002
Location: san francisco, ca
Vehicle:
90BJ Legacy LS ABS
AWD 946 Rio Red Jpn built

Default

Is it a clicking noise, rubbing noise, squeling noise, grinding noise or buzzing noise?
ciper is offline   Reply With Quote
Old 07-28-2003, 10:58 PM   #12
JewPac42
Scooby Guru
 
Member#: 23260
Join Date: Aug 2002
Chapter/Region: BAIC
Location: -=3/1 Jew Crew=-
Vehicle:
Patr ick Willis
for Rookie of the year

Default

I am under powertrain warranty. Do I need to swap out my intake/exhaust?

cipher-a buzzing noise would describe it best
JewPac42 is offline   Reply With Quote
Old 07-29-2003, 09:26 AM   #13
kickin_81
Scooby Newbie
 
Member#: 16679
Join Date: Mar 2002
Location: MN
Vehicle:
2004 Forester XT

Default

If I remember correctly, MY98 Imprezas needs their timing belt changed at 60000 miles; while the newer Imprezas that are SOHC, and isn't changed until ~100000 miles. My point is, your dealer hasn't changed your timing belt. Call your dealer... and it would help to swap the stock parts back on.
kickin_81 is offline   Reply With Quote
Old 07-30-2003, 02:28 AM   #14
JewPac42
Scooby Guru
 
Member#: 23260
Join Date: Aug 2002
Chapter/Region: BAIC
Location: -=3/1 Jew Crew=-
Vehicle:
Patr ick Willis
for Rookie of the year

Default

It is the alternator. Thanks everyone for your help. Do i need a new one or could something on it just be loose?
JewPac42 is offline   Reply With Quote
Old 07-30-2003, 02:51 AM   #15
JewPac42
Scooby Guru
 
Member#: 23260
Join Date: Aug 2002
Chapter/Region: BAIC
Location: -=3/1 Jew Crew=-
Vehicle:
Patr ick Willis
for Rookie of the year

Default

Shouldnt the alternator last more then 45K miles? This seems really strange to me. Would this be covered by my powertrain warranty?
JewPac42 is offline   Reply With Quote
Old 07-30-2003, 03:09 AM   #16
liigod
Scooby Specialist
 
Member#: 30512
Join Date: Nov 2002
Location: Yonder
Vehicle:
01 2.5rs
black

Default

alternators unfortuantly go out quite often, but its odd at that mileage.
liigod is offline   Reply With Quote
Old 07-30-2003, 12:23 PM   #17
JewPac42
Scooby Guru
 
Member#: 23260
Join Date: Aug 2002
Chapter/Region: BAIC
Location: -=3/1 Jew Crew=-
Vehicle:
Patr ick Willis
for Rookie of the year

Default

I thought so too. Anybody else have an opinion? Since it didnt die it is just making noise, could it be a faulty alternator?
JewPac42 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
Rubbing noise and tapping noise coming from engine bay. (OPEN TO READ MORE) Soulofdarkness Newbies & FAQs 8 12-19-2005 02:11 PM
Strange noise coming from engine t-rex25 Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 5 10-25-2004 03:27 AM
i have a winiding noise coming from engine teamslow wrx Newbies & FAQs 3 01-14-2003 03:23 PM
Anyone hear a weird noise coming from engine bay in the cold weather? WRXVII Service & Maintenance 1 12-29-2002 07:13 PM
Help!! Strange noise coming from engine 02SilverBullet Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 3 10-11-2002 09:41 PM


All times are GMT -4. The time now is 10:34 AM.


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.