How do you reset the ECU?

[Midas360]

What is the recommended way to reset the ECU?

Also, I've done the wastegate mod and was wondering if the ECU needs to be resetted?

I've read that you can disconnect the negative on the battery for 30 mins and this will reset the ECU.

Thanks,

Midas

[JustMike]

That does work. There are also two fuses that can be pulled. Advantage of the fuses is that the radio does not lose any presets.

[lil goat]

You can also disconnect the cables inside the driver side fender for 30 minutes (no radio reset), no you don't need to disconnect for the wastgate mod.

[imaj]

Originally Posted by JustMike That does work. There are also two fuses that can be pulled. Advantage of the fuses is that the radio does not lose any presets.

Common...you say two fuses...yet you do not tell us which ones?

[JustMike]

Originally Posted by imaj Common...you say two fuses...yet you do not tell us which ones?

Cause I had to search for it just like you could have? ...

Originally Posted by db49erfan1 42 and 43 for the ECM, per owners manual.. Removing the battery cable may wipe saved info throughout the vehicle.. Pulling the proper 2 fuses only affects the ECM..

[imaj]

Originally Posted by JustMike Cause I had to search for it just like you could have? ...

Ahh....so you are one of those types...

Well, in my defense...you lead me and I am sure others to believe that you knew where they were.

[JustMike]

Originally Posted by imaj Ahh....so you are one of those types...

As apposed to the type that expects everything to be handed to them?

And maybe I just posted that as an example of how easy it was to actually find the information right here on the forum or heaven forbid the actual owners manual?

Any way hope you found the information useful.

[Dark Tech]

Originally Posted by lil goat You can also disconnect the cables inside the driver side fender for 30 minutes (no radio reset), no you don't need to disconnect for the wastgate mod.

Refering to a black rectangular box with cables coming out of it on top of a aluminum part with cooling fins that is in the fender well. That is your ECU.

[spiky3480]

Do they have to be pulled for a specific amount of time, or just pull out and put back in (that didn't sound good) ?

[zzzybil]

Originally Posted by imaj Ahh....so you are one of those types... Well, in my defense...you lead me and I am sure others to believe that you knew where they were.

would yuh mind spoon feeding a picture ?...........

.. geezzzz how bout a video.............

read the manual >>



there's a book ???.........

[Dark Tech]

The reason why you unplug the ECU for 30 minutes is because there are capacitors inside of the ECU. THe capacitors have to discharge in order for the ECU to erase the driving habits that you have created. Your vehicle will still function properly when you plug the ECU back in but, "you will make new driving habits for the car without driving it soft like we all should of been doing in the first 500 miles." Or you can get a HPtuner and don't even have to unplug anything.
A dashhawk has a feature to reset fuel trims. You could also do it that way.

[imaj]

Originally Posted by JustMike As apposed to the type that expects everything to be handed to them? And maybe I just posted that as an example of how easy it was to actually find the information right here on the forum or heaven forbid the actual owners manual? Any way hope you found the information useful.

I did find the info. very informative! Thank you!

YOu know that first sentence is funny. Since I am an only child...I have heard that a lot.

[JustMike]

Originally Posted by imaj YOu know that first sentence is funny. Since I am an only child...I have heard that a lot.

As the oldest of three brothers I used to say it a lot ....

[beecee]

So if I pull those fuses for 30 minutes or more will it reset it even though I have the Gmroadster tune? I'm getting horrible knocking since I got it and have it at the shop right now getting serviced and maybe having the spark plugs replaced. My mechanic said I shouldn't have to replace the spark plugs at 55k miles since the manual says replace them at 100k.

I just want to get it off my car since it's not working out.

I've got a 2008 GXP.

[MarkRat]

Beecee,
Pulling power to the ECM will not erase installed tunes.

Mark