This is a discussion on ECU reset within the General Help forums, part of the LSx Technical Help Section category; simple question that i can not find the answer to.... whats the best way to reset the ECU.... cars gas ...
10-11-2010, 10:35 PM #1
simple question that i can not find the answer to....
whats the best way to reset the ECU....
cars gas milage has went to shit, found out the trans shop put a o2 wire over a header and melted through that so it runs wicked rich and killed the o2s so i got a new harnes and o2s to go in here shortly, and figured itd pry be best to just reset the ecu while i was at it... I believe the easiest way is to unhook the battery for awhile, but i also remember something about pulling a fuse and a sequence that went with it all
10-12-2010, 04:43 AM #2
Sup Wade! I've always just disconnected my batt then a full warm up idle. Maybe someone will chime in on the fuses.. Subscribed...
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10-12-2010, 05:19 AM #3
- Join Date
- Apr 2008
- Madison, WI
1999 Formula WS6 M6-sold
- 2001 Silverado Z71
You can reset the fuel trims with a scan tool or HPtuners.
10-12-2010, 06:50 AM #4
10-12-2010, 08:50 AM #5
10-12-2010, 09:00 AM #6
- Join Date
- Feb 2009
- Mansfield, PA
Black & Blue
- '02 WS.6 / '07 Suburban
I had to re-set my LTFT's manually with HP Tuners.
10-12-2010, 10:45 PM #7
- Join Date
- Apr 2010
- Fairfax, VA
- 98 TA WS6/ 01 C5 Corvette
I believe you can pull the PCM and BAT fuses for 5 minutes and it resets the ecu. I did it this way when I was cleaning my MAF and I forgot to plug it back in before I started my car again.
10-13-2010, 04:24 AM #8
10-13-2010, 04:32 AM #9
I fired it up once and left a couple things unpluged.. Ran like D*CK!
After scratching my head for a minute I shut it down and looked it over..
Pluged in the sensors and was back in business..
However the ECM had logged the mistakes and I then had the codes cleared.
For the rear 02. I just let it reset on it's own which it will do after so many startup and shut down's..
Last edited by Smittro; 10-13-2010 at 04:39 AM.
10-15-2010, 09:58 PM #10
well i was really hoping not to screw up the new o2s but i guess, ill give the pcm fuse and batery trick a try and see where it gets me
10-15-2010, 11:35 PM #11
I have always just disconnected the vary for a few min then let it warm up and go put 50 miles on it and it should relearn everything, has worked on all my other cars and my TA when I had to replace the maf.
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