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Model specific boards => Golf mk3 => Topic started by: locin78 on 06 July 2009, 17:48

Title: Resetting ECU !!!!!!!
Post by: locin78 on 06 July 2009, 17:48

Just put a new throttle body with new sensors on my gti 16v  mk3, wich as inproved my car's performance but there is still a slight hesitation in the power around 3000 revs just for a split second! then it kick's in , my mate who use towork at VW said te ECU need's resetting!.

I have VAGCOM which i used to sort my problem out but i did not register it (can't afford to just yet) is there any other way of doing this on the cheap or a way that wont damage the ECU or anyother part of my car.

Thanks Nic

Title: Re: Resetting ECU !!!!!!!
Post by: VW Mel on 06 July 2009, 18:03

unplug the battery for 30mins, then plug back in.

Turn on ignition but dont start car and you will hear the throttle body setting itself.

Then it should relearn itself from the first drive.

Title: Re: Resetting ECU !!!!!!!
Post by: locin78 on 06 July 2009, 18:14

once i turn the ignition on and hear that how long should i leave it for b4 i drive it??
thanks nic

Title: Re: Resetting ECU !!!!!!!
Post by: VW Mel on 06 July 2009, 18:16

Should take about 30seconds to stop clicking. Could just start it straight away if you feel like it, but people always say to let it mess about with itself first.

Title: Re: Resetting ECU !!!!!!!
Post by: locin78 on 06 July 2009, 20:15

did that and after 30 mins reconected it but heard no clicking or anything resetting it self , so went for a drive still acting up !

Title: Re: Resetting ECU !!!!!!!
Post by: Len on 06 July 2009, 20:31

That will be your ECU relay then!

Title: Re: Resetting ECU !!!!!!!
Post by: locin78 on 06 July 2009, 22:25

is the relay 30 or 167? not sure

thanks Nic

Title: Re: Resetting ECU !!!!!!!
Post by: Len on 07 July 2009, 10:41

30.

The other one is the Fuel injector relay

Title: Re: Resetting ECU !!!!!!!
Post by: Khare on 07 July 2009, 14:41

you should leave battery unplugged 30 mins, then turn ignition to position 2 for 3 minutes and then start the car and leave idleing for another 3 minutes.

Title: Re: Resetting ECU !!!!!!!
Post by: locin78 on 07 July 2009, 21:47

Finally sorted the the bloody thing :grin: now time to have lots of fun :evil: just wanted to say  thanks to everyone for there advice ect.

it was the fuel relay ( with no 30 on it) which wasplayig up so i replaced it today  now the car is running MINT now  :grin:   .