theduke308

How long should I leave the battery disconnected to reset the Computer and clear its adaptive memory?

kozal01

iTrader: (2)

Disconnect the battery and turn the headlights on and that will clear the memory.

theduke308

any time frame involved in that?

kozal01

iTrader: (2)

None that I am aware of. I've heard some say 20 minutes, some an hour but discharging the computer memory by turning on the headlights should take care of it right away. It's always worked for me.

theduke308

Cool, I will give it a try, thanks!

eej711

Just curious, why would one need to reset it?

theduke308

I had a period of running with a bad COP and old plugs. I am trying to reset my fuel economy and shift points based on the new parts I installed (plugs, COPS, etc) Now that the truck is running good just with very low MPG,s that I am assuming it learned bases on running poorly with the missing COPs and old spark plugs

M&D

Ive done this many times on many diff vehicles. 10 minutes unplugged doing nothing else has never failed to do the trick.

jbhill

hmm didnt know about turning on the headlights. i know a trick for disabling the srs you touch the + and - terminals together to "discharge" it after disconnection.

Lifted416

hope somebody chimes in on this...I am also trying to reset the pcm... but how could turning on headlights with a negative terminal on battery disconnected drain the battery more if the lights obviously will not turn on because the negatives post terminal is disconnected.. am I missing something???