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Computer reset?
#448993 09/30/02 09:13 PM
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Greensburg, PA
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grinder Offline OP
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I am experiencing hard shifting from 1st to 2nd gear. My vehicle is a 97 Mystique GS.

I have noticed other users suggesting that hard shifting could be resolved by resetting the computer. How is this done, exactly? Do I merely disconnect the battery? I hope it isn't much more involved than that.

Re: Computer reset?
#448994 09/30/02 09:19 PM
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Ok City, OK
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The easiest way is to just disconnect the battery for about 30 mins. You can pull a couple of fuses and get the same result, but it seems that the fuse numbers vary from contique to contique and year to year so I would just disconnect the battery.

Re: Computer reset?
#448995 09/30/02 09:23 PM
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Memphis, TN area
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The computer can be reset by disconnecting the battery Neg. terminial for a few seconds. You can also pull/replace fuse 4 & 11 in engine caompartment fuse box which will avoid wiping out your clock and radio station settings, May want to check your tranny fluid level and make sure it is full idling in Park. (Warm)



Scott 95 SE-2.5L ATX (Sold, but not forgotten...)
Re: Computer reset?
#448996 09/30/02 09:53 PM
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Chicago
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Yeppers fuses 4 and 11 under the hood by the intake (airbox) will reset your computer.

www.ChicagoCEG.com 2006 White Grand Prix
Re: Computer reset?
#448997 09/30/02 11:18 PM
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  In my '06 Mystique, it's fuses 9 and 11 that you pull to reset the PCM.


Hyster E60XM-33 1996 Mercury Mystique GS, Zetec, ATX To email me, remove the string HatesSpam from this address:BobHatesSpam@Blaylock.to
Re: Computer reset?
#448998 10/01/02 02:48 AM
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TX
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Check that again. #9 looks like a relay. #4 is a 3A fuse, #11 is a 20A fuse. Both are labeled EEC fuses in the manual. The difference arises with 99+ CDWs because they use a different style fuse (it's smaller than pre-99s).

Also, my manual is slightly misprinted in that the columns don't line up exactly. There was an extra line return and that threw the column off.

E0 SVT, lightly modded
Re: Computer reset?
#448999 10/01/02 05:26 AM
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Pacific NW, USA
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Beowulf Offline
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In reply to:


In my '06 Mystique, it's fuses 9 and 11 that you pull to reset the PCM.




'06? Are you a time traveller? Are they bringing the 'tour back?


Last edited by Beowulf; 10/01/02 05:26 AM.
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Re: Computer reset?
#449000 10/01/02 06:50 AM
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Canada
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does the cpu get reset if the Positive is undone rather than Neg? My neg is very hard to get off.?????

1995 Contour SE K&N Sport exaust -done right Fine Sterio System 215 45 15 Yok H4's CSA 17" 5 Spoke "Concept" Wheels Tinted Glass Blue LED door illumination replacing green bulbs Previous CEG contributions - removed due to absence
Re: Computer reset?
#449001 10/01/02 07:25 AM
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TX
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yes, but it's safer to disconnect the negative.

E0 SVT, lightly modded
Re: Computer reset?
#449002 10/01/02 11:29 AM
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Pickering, Ontario, Canada
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Originally posted by louisw:
Check that again. #9 looks like a relay.
Not so, relays have R in front of number.

My '98 owner's guide(with correction page glued in place) lists fuses 4,9 and 11 as feeding the EEC.

Fuse 11 feeds PCM (EEC) memory circuits.
Fuse 9 feeds PCM relay contact which in turn feeds power to PCU.
Fuse 4 feeds PCM relay coil, but only if ignition on. Pulling it is therefore actually redundant if fuse 9 is already pulled or if ignition is off.

Above for '98 models. As was posted earlier pulling bat neg for acouple of minutes is easier to communicate and avoids any model confusion re fuse numbers.

98 Mystique LS v6 atx 163,000km 97 Contour LX v6 atx 163,000km
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