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Old 06-22-2001, 04:12 PM   #1
Mikemar
Scooby Newbie
 
Member#: 7259
Join Date: Jun 2001
Location: Western MA
Vehicle:
2004 Sti
Stone Chip Blue

Default My Iprezzzza is backfiring when I shift!

Has anyone else had this problem? Not a loud backfire, more like a loud fart. I can hear it in the downpipe and sometimes in the muffler. Only seems to happen when I push in the clutch to shift to a higher gear. Is this common or should I get it looked at?

Car is still stock, not for too much longer though.

Car only has 6200 miles on it.
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Old 06-22-2001, 04:19 PM   #2
jetfire67
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Member#: 4926
Join Date: Mar 2001
Location: Everywhere and Nowhere
Vehicle:
1988 FC3S 10th AE
& 2009 STI

Default

i get that too. usually when i downshift to 4th for power at relatively high speed. not sure if it's normal or not but i havent had any problems w/ my car lately.
anyone else?
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Old 06-22-2001, 04:50 PM   #3
Keiho
Sea to Sky - OWNED
Moderator
 
Member#: 610
Join Date: Dec 1999
Chapter/Region: VIC
Location: Vancouver, BC, Canada
Vehicle:
2003 Lexus IS300
Graphite Gray Pearl

Default

<smartass>What downpipe? Your car is NA n'est pas? </smartass>
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Old 06-22-2001, 04:58 PM   #4
Fish
RIP Sirkbac
 
Member#: 869
Join Date: Feb 2000
Chapter/Region: NESIC
Location: Nashua NH
Vehicle:
1987 GPZ-750 TURBO
90' MX-5/11' DGM STi Sdn

Default

uh..

are you turbo'd son?
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Old 06-22-2001, 05:25 PM   #5
NezorF
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Member#: 7249
Join Date: Jun 2001
Location: Eden Prairie, MN
Vehicle:
2001 Impreza 2.5 RS
Black

Post I get the same thing

I get the same thing on my MY01 2.5 RS. It's been doing it since about 3k miles and it now has about 8k miles. It was porbably doing it before but I never noticed it though. I read something here once that said it was normal for there to be un-burnt fuel hitting hot things in the exhaust system that caused that (fart) sound.

Now the only noise that bothers me is scratching sound coming from the front of my car. Only when I'm in gear. I think it's a diffrential though.

Hope this helps.
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Old 06-22-2001, 06:30 PM   #6
KillerTHC
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Member#: 4942
Join Date: Mar 2001
Chapter/Region: BAIC
Location: Palo Alto, CA USA
Vehicle:
01 SRP 2.5 RS-T
Ludespeed Stage 3 Link'd

Default

my car makes a scratching noise from the front too (MY01) but the dealership says that its valve chatter. do any of you have this problem?
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Old 06-22-2001, 06:45 PM   #7
Poseidon
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Member#: 4864
Join Date: Mar 2001
Location: North Bend, WA USA
Vehicle:
2004 WRX
Silver

Default

It would help if you told us what year and model the car is, but a backfire means the engine is running rich (too much fuel or not enough air). If it is still under warranty, take it to the dealer to get it checked out. If not, find a local non-dealership Subaru mechanic.

Jordan
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Old 06-22-2001, 06:49 PM   #8
RS2001
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Member#: 3210
Join Date: Dec 2000
Vehicle:
2001 RS Coupe
Silverthorn

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Hmmmmm, A scratchin noise ya say?

Sorry, I'm a dork

-DAN
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Old 06-22-2001, 06:50 PM   #9
zzyzx
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Member#: 815
Join Date: Jan 2000
Location: Florida
Vehicle:
2013 Boss 302 White
2000 2.5 RS Coupe Silver

Default

Guys, this has been well covered many times before. Do a search (now that you can,).

It's normal. It's also a lot louder when you have an aftermarket exhaust.

- Steve
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Old 06-23-2001, 07:26 AM   #10
SubaDan
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Member#: 6631
Join Date: May 2001
Location: Louisville, KY, US
Vehicle:
2000 ImprezaRS Sedan
Aspen White

Default

From my research I have found that it means your running rich. I have heard that many imprezas are set up this way becuase it keeps the turbo spooled. The farting noise is the extra fuel being burned up in the cat. As for the scratching you have me. Maybe you ran over an animal or somthing,
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Old 06-23-2001, 04:35 PM   #11
Tats
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Member#: 5692
Join Date: Apr 2001
Chapter/Region: Tri-State
Location: Lovely Florida, NY
Vehicle:
WTF? YES! I am
better than you!

Default

Mmmm....that boxer pop, I was worried at first but now I love it.


Tats.
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Old 06-23-2001, 08:38 PM   #12
imprezadan
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Member#: 6935
Join Date: May 2001
Vehicle:
1999 Impreza 2.5RS
Rally Blue

Default

My cat-back Scooby Sport makes those farts sound great! My mother drove the car today, and I don't think that she liked them!
"Why would you spend time and $ making the car sound like it has a faulty exhaust?"
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Old 06-24-2001, 01:42 PM   #13
Tats
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Member#: 5692
Join Date: Apr 2001
Chapter/Region: Tri-State
Location: Lovely Florida, NY
Vehicle:
WTF? YES! I am
better than you!

Default

Some people will never understand. My wife hates that I spend so much on the car, but then she gets in it and loves it.

Tats.
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Old 06-24-2001, 04:20 PM   #14
imprezadan
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Member#: 6935
Join Date: May 2001
Vehicle:
1999 Impreza 2.5RS
Rally Blue

Default

Yeah, my friend who has never modded any of his cars drove mine last night and I think he liked it too much! He drives a Honda(stock-not cheezy) and was absolutely blown away by the fact that you don't have to keep the revs past4k when cruisin'! Torque is good Mod on!
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Old 06-25-2001, 02:33 AM   #15
Imprezafan1
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Member#: 4039
Join Date: Feb 2001
Location: San Francisco, California
Vehicle:
2001 2.5 RS
Black

Question Is it a good idea?

I was wondering because I bought an APEX N1 for my 01 Impreza. It back fires and farts when i shift too! People have told me to reset to ECU. I have not yet but its it a good idea to unscrew the battery and just let it chill for a couple hours and screw it back so it resets everything? PLease e-mail me.
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