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Old 10-27-2000, 07:58 AM   #1
Scooby Specialist
Member#: 102
Join Date: Jul 1999
Location: The meeting place
Post reseting the ecu ....fuse method


A few questions.
1) which fuse does the ecu reset?
2) when you put back the fuse will it set the alrm off?
3) will it clear all the clock and CD deck settings? (ie full reset like the battery terminal method)
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Old 10-27-2000, 08:51 AM   #2
NASIOC Supporter
Member#: 177
Join Date: Aug 1999
Chapter/Region: NWIC
Location: Boise,Idaho,USA
The 93 Imp W/EJ20K
flat black


sfb2.. under the hood.. does not work for 2000s

remeber sanfranciscobay2
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Old 10-27-2000, 08:52 AM   #3
Scooby Guru
Member#: 329
Join Date: Sep 1999
Chapter/Region: Tri-State
Location: NJ
1995 325i
Arctic Gray


Ah ha, that explains why I couldn't find that fuse in my MY00...
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Old 10-27-2000, 09:04 AM   #4
Scooby Newbie
Member#: 1249
Join Date: Apr 2000
Location: Newark, DE USA
2000 OBS

Thumbs up

Actually, the MY00 stereo maintains its presets if the battery isn't disconnected for much longer than a half hour. The clocks still need to be reset.

And I still jump out of my skin when the alarm goes off upon reconnecting the battery, even though I'm ready for it and I have the button in my hand.
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Old 10-27-2000, 09:48 AM   #5
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Location: The meeting place

roger that. but would like to hear the non MY00 weirdo Imprezas speak up.
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Old 10-27-2000, 10:40 AM   #6
Ken S
Scooby Newbie
Member#: 1895
Join Date: Jul 2000
Location: Bay Area, CA
05 Leg GT Ltd. W


I don't think the fuse method works on my 98. I've left it pulled overnight but when I start the engine it starts up like nothing ever happened. Fuel milage afterwards stays the same too.

On the other hand, when I unplugg the battery terminal, there is a noticeable difference in idle and engine behavior at startup. Gas milage dips initally, then climbs back up.

Also, radio presets don't change after battery disconnect. Only the clock needs to be reset.

For those of you who have the alarm, try stuffing the alarm horn with a towel -- it reduces the "heart-attack" factor.

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Old 10-27-2000, 11:02 AM   #7
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Member#: 102
Join Date: Jul 1999
Location: The meeting place

Well the battery method resets everything including my stereo presets. All it takes is leaving it off at 30+ minutes and everything's gone.
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Old 10-27-2000, 01:04 PM   #8
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Member#: 2348
Join Date: Sep 2000
Chapter/Region: MWSOC
Location: St.Louis
2006 WRX TR
Steel Grey Metallic


On my 99 with aftermarket stereo, hooked up via proper wiring harness,i loose ALL my settings. I will have to try the fuse method soon.
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Old 10-28-2000, 11:40 PM   #9
P.K. Motorsports
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Member#: 1110
Join Date: Mar 2000
Location: USA
1999 RS


The fuse method doesn't consistently work. When you have an A/F ratio gauge you can plainly see whether the ECU was reset or not, and the pulled fuse doesn't work about 2/3 of the time when left overnight. On the other hand, disconnecting the negative battery cable works after only 10 minutes, and probably in less time than that.
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