How long can you leave ECM disconnected?

["Turbo-T"]

I was wondering if there's a certain time frame you can leave the ECM disconnected for?

In other words if I were to remove power from the ECM for security reasons would it ever lose it's memory if left disconnected for too long?

 

[Turbo6Smackdown]

yep. but it re learns though.

 

["Turbo-T"]

Thanks, I plan to only leave it unplugged for maybe 5 days. Also I plan to just pull the fuse for the ECM

 

[Blown&Injected]

I am not a computer expert!!!! but I thought one second and it is lost - so 1 second would be the same as 5 days or 5 years.

 

[TurboDave]

It looses it's learned values instantly upon unplugging.

 

[psycho6cyl]

As a side note if you are running a Turbo Tweak chip you will lose the settings on the chip you have performed once you lose power to ecm.... So write the settings down... Psycho 6....

 

[unix_punk]

On another side note, the ECM has 2 power wires, one is a constant which is the orange one with the plug near the battery (which keeps the settings stored) the other one is the key on power. If you were to take a look at a schematic or even on gnttype.org I think, you could wire up a handy kill switch in the key on power wire for future use. I have one on my car, never park in public without it.

 

[psycho6cyl]

thats what I thought. (bout the orange wire acting as a power for the memory)

 

["Turbo-T"]

Thanks I'd like to find out which wire going to it is the power wire. Was not aware the orange was a memory wire. Thanks again.