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05-16-2013, 02:13 PM | #1 |
Scooby Newbie
Member#: 356558
Join Date: May 2013
Location: Oregon
Vehicle:2007 Impreza 2.5i Silver |
2.5i making rattling sound around 3k rpm
Anyone else ever have this problem? Doesn't seem to happen all the time but frequent enough to worry me. It's an 07 with 100k miles.
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05-16-2013, 02:56 PM | #2 |
Scooby Guru
Member#: 120
Join Date: Jul 1999
Chapter/Region:
AKIC
Location: Where the Navy sends me...
Vehicle:1997 Legacy 2.5GT 1996 Impreza coupe |
Exhaust heat shield, perhaps?
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05-16-2013, 03:58 PM | #3 |
Scooby Newbie
Member#: 250265
Join Date: Jun 2010
Chapter/Region:
RMIC
Location: Denver, CO
Vehicle:2005 Legacy GT White |
Hopefully it is the exhaust. Try to have someone reproduce it while you walk around and get under the car. That will enable you to isolate where it is coming from. There are many different things that can cause a rattle on a car. Figuring out where it is coming from is the first step to solving the problem.
Good Luck! |
05-16-2013, 05:47 PM | #4 |
Scooby Newbie
Member#: 356558
Join Date: May 2013
Location: Oregon
Vehicle:2007 Impreza 2.5i Silver |
It only seems to happen when I'm driving. In neutral, revving my engine I can't seem to mimic the noise.
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05-16-2013, 10:18 PM | #5 |
Scooby Specialist
Member#: 244231
Join Date: Apr 2010
Chapter/Region:
NESIC
Location: Providence, RI, USA
Vehicle:2018 Crosstrek CVT DGM |
My shifter rattles like crazy at high revs. I am pretty sure I have the heat shield rattles as well. I will be checking them again this weekend when I do a timing belt change.
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05-16-2013, 10:46 PM | #6 |
Scooby Newbie
Member#: 356558
Join Date: May 2013
Location: Oregon
Vehicle:2007 Impreza 2.5i Silver |
My shifter does the same! & alright. I need to do my timing belt soon too. Are you doing it yourself?
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05-17-2013, 10:18 AM | #7 |
Scooby Newbie
Member#: 245141
Join Date: Apr 2010
Chapter/Region:
NESIC
Location: MA
Vehicle:07 2.5i cgm |
Just fixed my friends heat shield rattle on his legacy. Get under the car when its cool and give the shield and the entire exhaust system a good wiggle.
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05-17-2013, 02:45 PM | #8 |
Scooby Newbie
Member#: 128739
Join Date: Oct 2006
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05-17-2013, 05:42 PM | #9 |
Scooby Newbie
Member#: 283246
Join Date: May 2011
Chapter/Region:
MWSOC
Location: Oshkosh
Vehicle:06 OutbackSport SE |
I got the same thing on mine and I figure it's the heat shield on the headers. It's annoying but it doesn't bother me.
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05-17-2013, 05:46 PM | #10 |
Scooby Newbie
Member#: 141433
Join Date: Feb 2007
Chapter/Region:
MAIC
Location: Rochester, NY
Vehicle:2006 Impreza 2.5i Obsidian Black |
I have a heat shield rattle at idle and it took me forever to figure out my rattle at 3000-4500 RPM on the highway was my shifter.
Try this: when it starts making the noise grab you shifter and put slight pressure to the left or right and see if it changes pitch or goes away |
05-17-2013, 06:37 PM | #11 |
Scooby Newbie
Member#: 225882
Join Date: Oct 2009
Location: Central NJ
Vehicle:2000 OBS '88 BMW K75S |
Got rid if the heat shield rattle with hose clamps, too...10k or so and they're still holding...
About that shifter rattle...did you find a way to quiet that down, it's getting to be annoying... |
05-17-2013, 09:28 PM | #12 |
Scooby Guru
Member#: 141373
Join Date: Feb 2007
Chapter/Region:
E. Canada
Location: Quebec, QC
Vehicle:2022 Crosstrek Sport 6MT |
The bloody shifter rattles on every damn 2.5l N/A around 4000 rpm, even more so if you change to a S.S. I flooded it with oil, made a huge tight knot with a rubber vacuum hose around the linkage area, attached a half-a-pound piece of metal to make everything heavier (and therefore dampen or change the frequency of the resonance) and wrapped all of that in electric tape. The leather boot barely fits over the shifter which is now harder to move, but the rattling ALMOST went away. I'd take a picture, but it's humiliating
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05-17-2013, 11:31 PM | #13 |
Scooby Newbie
Member#: 356750
Join Date: May 2013
Chapter/Region:
NESIC
Location: Southcoast MA
Vehicle:05 WRX Silver |
I had a similar rattle around 3k rpm in my 2008 2.5i a/t. any consensus on what it is?
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05-18-2013, 01:30 AM | #14 | |
Scooby Newbie
Member#: 356558
Join Date: May 2013
Location: Oregon
Vehicle:2007 Impreza 2.5i Silver |
Quote:
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05-18-2013, 03:21 PM | #15 |
Scooby Newbie
Member#: 301247
Join Date: Nov 2011
Location: Toronto
Vehicle:09 Impreza 2.5i MT White |
i have something like a rattle below 2500rpm on warm days:
No dealership or mechanic shop i took it to could fix it. They clamped my heatshields and tightened all the headers and bolts and whatever down there. It has not improved one bit. Funny thing is it doesn't happen in cold days. |
05-28-2013, 10:23 PM | #16 |
Scooby Newbie
Member#: 357785
Join Date: May 2013
Vehicle:1998 Impreza OBS |
I've heard the only option is the remove the heat shielding around the exhaust.
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06-03-2013, 09:32 PM | #17 |
Scooby Newbie
Member#: 128739
Join Date: Oct 2006
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Or do what I mentioned and add a pipe clamp to squeeze the two pieces together gently and stop them vibrating. Ghetto slightly, but I didn't want to loose the heat shield and for $0.99 it was a great fix.
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06-03-2013, 09:54 PM | #18 | |
Scooby Specialist
Member#: 165749
Join Date: Dec 2007
Location: Detroit, MF'er!
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Quote:
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06-04-2013, 02:01 AM | #19 |
Scooby Newbie
Member#: 358423
Join Date: Jun 2013
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nice work
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06-06-2013, 08:53 PM | #20 |
Scooby Guru
Member#: 141373
Join Date: Feb 2007
Chapter/Region:
E. Canada
Location: Quebec, QC
Vehicle:2022 Crosstrek Sport 6MT |
Which bushings, RaceFace?
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06-06-2013, 10:41 PM | #21 |
Scooby Specialist
Member#: 165749
Join Date: Dec 2007
Location: Detroit, MF'er!
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Shift lever. There are a couple on the lever/linkage connection under the shifter boot.
There are also some on the linkage under the shifter where it anchors to the body and where it braces near the transmission bellhousing, but i doubt those are the source of the rattle. |
06-07-2013, 11:47 AM | #22 |
Scooby Guru
Member#: 141373
Join Date: Feb 2007
Chapter/Region:
E. Canada
Location: Quebec, QC
Vehicle:2022 Crosstrek Sport 6MT |
True, but it's not as if they were worn out after a few years in a cozy environment - unless I get some of the same format but in rubber...
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06-08-2013, 12:39 AM | #23 | |
Scooby Specialist
Member#: 165749
Join Date: Dec 2007
Location: Detroit, MF'er!
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Quote:
If you replace with oem, make sure you lube then with something tenacious like a tacky lithium grease or heavy packing grease. Bearing grease doesn't have the staying power to hold in place in an open environment. |
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06-08-2013, 10:40 AM | #24 |
Scooby Guru
Member#: 141373
Join Date: Feb 2007
Chapter/Region:
E. Canada
Location: Quebec, QC
Vehicle:2022 Crosstrek Sport 6MT |
Thank you, will try it.
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06-08-2013, 11:49 AM | #25 |
Scooby Newbie
Member#: 330957
Join Date: Sep 2012
Chapter/Region:
Tri-State
Location: Woodberry, NJ
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I have the same issue with the heat shield. Rattles at low RPMs but not at idle. Gotta get under my car and fiddle with the exhaust to find it.
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