Welcome to the North American Subaru Impreza Owners Club Wednesday August 24, 2016
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
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 05-18-2016, 08:43 PM   #1
DZellz
Scooby Newbie
 
Member#: 420562
Join Date: May 2015
Default Random Hissing Noise

Ok so I've been reading through threads for a few weeks now and can't seem to find a definitive answer to my question.

When I'm driving I'll get a random hiss every now and then. It happens randomly and nothing specific seems to trigger the noise. It's noise level varies and sounds more like a "pssssssst". (Sometimes followed by a squeak)

On a side note, sometimes when turning at slow speeds the car seems to rumble very loudly...is this normal?

I drive an 07 Subaru Impreza with 113,000 miles and haven't heard this at all in the last three years I've owned it.

Any insight would be great.
* Registered users of the site do not see these ads.
DZellz is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 05-21-2016, 12:10 PM   #2
DZellz
Scooby Newbie
 
Member#: 420562
Join Date: May 2015
Default

Anybody?
DZellz is offline   Reply With Quote
Old 05-22-2016, 10:51 PM   #3
ayang951
Scooby Newbie
 
Member#: 444680
Join Date: Apr 2016
Chapter/Region: SCIC
Location: Riverside Area
Vehicle:
2006 Impreza
Grey

Default

from what happened to me, on the torque box connected to the throttle body itself where as the intake inlet tubing is connected to, there is a little connector on the passenger side front of the box, my clip broke and that piece was losing connection so it make a whinning hissing noise as I drove, sounded like a super charger as the rpms climbed. afterwards I fixed it with some duct tape and the hissing lightened up, but there was still a faint hissing still. after tinkering with the car some more, I found out that the exhaust flange gasket on the headers(Passenger side) was torn and the flange gasket from the headers to the catalytic converter mid pipe was torn as well, and there was a leak in it. I am in the process of replacing it right now with a 2002-2005 impreza 2.5rs headers, highflow mid pipe catalytic converter and cat back exhaust system, and hopefully that will stop the "hissing" sound that was left over, its not that loud or noticeable as the intake side "hissing" or "whistling" sound was though.
ayang951 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

All times are GMT -4. The time now is 10:57 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2016 Axivo Inc.
Copyright ©1999 - 2016, North American Subaru Impreza Owners Club, Inc.