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-   -   how long to reset ECU (https://www.mazda3club.com/3rd-gen-engine-drivetrain-57/how-long-reset-ecu-25748/)

Jose969 May-18th-2003 07:13 PM

how long to reset ECU
 
I just replaced my throttle body and wanted to know how long and what i need to do to reset my ECU. Any help would be great. Thanks

Joe

Farsyde May-18th-2003 08:27 PM

if you are just looking to kill the charge in the car then unhook the battery, press the the break a few times, and wait like 5 mins and it should be fine.

Sir Nuke May-18th-2003 08:36 PM

do the above...and ENSURE you disconnect the NEGITIVE terminal of your battery...NOT the positive.

then after doing the above...start the car and allow it to idle for about 10 minutes...this gives the ECU a little time to RELEARN your car and all the NORMAL settings. then drive as if nothing had happened.

:{D

gcs118 May-18th-2003 08:47 PM


Originally posted by Sir Nuke
do the above...and ENSURE you disconnect the NEGITIVE terminal of your battery...NOT the positive.

:{D

What would happen if you did only unhook the positive? What about both? Just curious...

leungwingkei May-18th-2003 11:20 PM

The positive..you may fry the ECU.

Farsyde May-19th-2003 03:38 PM

yep...never take off the positive first. then the battery may discharge way more than the 12v and possibly more amps and make quick work of the electronics in your car. If you do ever take out the positive, then unplug the negative so that both terminals are unplugged, then plug in the positive, then the negative. The negative terminal should always be the last terminal connected

pr5owner May-19th-2003 11:15 PM

yes.. what they said.. you hit the brake a couple times to discharge any capacitors that still hold a charge.

vivid03mp5 June-16th-2003 09:36 PM

where did you get the throttle body from? i remeber seening one a while back but have been unalble to find it again.

gcs118 June-16th-2003 10:20 PM


Originally posted by leungwingkei
The positive..you may fry the ECU.
Check this out :
http://www.popularmechanics.com/auto...h/index2.phtml

"Start by disconnecting the battery positive cable. "

:eek: :eek: :eek: :eek: :eek: :eek: :eek: :eek: :eek: :eek: :eek: :eek:

2nd paragraph

UCSBgeek June-16th-2003 11:17 PM


Originally posted by gcs118


Check this out :
http://www.popularmechanics.com/auto...h/index2.phtml

"Start by disconnecting the battery positive cable. "

:eek: :eek: :eek: :eek: :eek: :eek: :eek: :eek: :eek: :eek: :eek: :eek:

2nd paragraph

AAAHHH!!! Quite wrong, though!!!!!! Unless every other thing I've ever read is wrong!!


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