General resetting the ECU?

[ycming]

hi there,

Is there anyway i can reset my ecu ??

Does pulling the two battery cables out work???

Or that's just bull **** ?

thanks in advance

bye for now

 

[fingers99]

That'll work. Opinions differ on how long you need to disconnect for. Overnight should well do it, but I can't see why more than an hour is needed.

Why you want to reset?

 

[ycming]

the engine management came on, so lambda sensor is change ^^.

I suspect is the lambda sensor due to the fact that the light only comes on when the engine is hot and stays off with a cold engine.

Just so the ECU will stop thinkikng some sort of sensor is at fault.

And after i put the lambda sensor, yet the engine light came on again ~~~~~

I really hope by resetting the ECU will fix this . well i guess i will leave it over light

 

[fingers99]

Give it a go. If it doesn't work it'd be worthwhile checking the wiring to the lambda very carefully.

 

[ycming]

that shouldn't be problem, when i was replacing it, i took the whole wire out connecting from the ecu onwards. .. i am just afraid that it could be some other sensor that causes the engine light to come on ....

i think when that comes i might have to get my ecu read again .... tomorrow i'll clean the throttle body hope that will help ...

thanks for the help

 

[Liam]

Search for haynes ecu reset and you'll find the proper procedure.

Liam

 

[ycming]

hi there i have with those keywords , but i can't seem to find anything.

can you post a link please??

thanks again

 

[ycming]

so guys what is the proper way to reset the ECU??

 

[SkinzCinqSporting]

Just take the ECU out for a few hours, it will have to reset then.

 

[ycming]

the whole ecu unit or just the battery ??

 

[SkinzCinqSporting]

Well put it this way, i took the ECU out and it reset itself, and better than having to reprogramme your radio presets and clock

 

[ycming]

i see i see , well i guess pulling the battery out also works..

ok i resetted the ecu, and now the car seems to misfiring constantly ~~~~~~

any hlep on that ?? Is this because the ECU has been resetting and has to learning about the fuelling again ??

 

[frenchwood]

The ECU in Centos is a "Learning" ECU.

After you reset it (mine resets after a brief disconnection) it needs to "Re-Learn" the engine.

IMHO it usually takes about 300 miles to relearn, and during this time will drink petrol and run like a bag of ferrets arguing over a dog bone.

I tend to find after a reset that i can expect poor performance for around 3-4 days, after this it should be running "Normal"...

Hope this helps!

 

[Liam]

hi there i have with those keywords , but i can't seem to find anything.

can you post a link please??

thanks again

Bottom thread of those search results

https://www.fiatforum.com/cinquecen...ar-wont-start.html?highlight=haynes+ecu+reset

Liam