Tried Resetting The Ecu, Has It Worked?

[aa120n]

i took the fuse out and pressed the break light like was suggestted to me. would this definatly work, or would disconnecting the Battery be a better choice??

would a rolling road sesion find my problem??

[BLOODUK]

i took the fuse out and pressed the break light like was suggestted to me.

Took both fuses out? , yes that would reset the ecu what you have done

dont bother with the Battery

[aa120n]

there's only one fuse labelled ECU?

which other is there?

[Bibbs]

and the engine should feel smoother and idle irratically ..

[aa120n]

what do you mean by "idle irratically"??

[Bibbs]

it will "hunt" from 600 to 1000 rpm and after 5 mins settle back down again.

[aa120n]

i'm sure it dint do that, does this mean it hasn't been reset?

[Bibbs]

dunno, but I know mine and a fair few others do ..

Did you pull BOTH the EF and EFi fuses .. one is a normal fuse and the other is a small cylinder ..

[EmR2T]

Yeah it will be noticable - you will probably think it is going to stall at first when you come to a junction.

Also it is very likely that your stereo will lose its memory

[aa120n]

i only noticed one fuse labelled 'ecu', i dint look at the cylinder's, what's the cylinder called??

[BLOODUK]

Did you pull BOTH the EF and EFi fuses .. one is a normal fuse and the other is a small cylinder ..

Ive never pulled any Cylinder's ooerrhmmm just i believe to be ECU and was called EF

it was idling funny aswell, but then went perfect.

:o

[deekay140]

just remove the efi fuse

[urotsukidoji_badassdemon]

Hey guys, if I took out my Battery from the car completely to charge it up, then that would reset my ECU yes? Cos when the cam belt was done, and initally started up, it just would not idle at all, the mech ended up having to put a brick on the pedal to keep it going to warm the engine up. Would resetting the ECU make the engine go funny with MY problem of no power at under 2500 revs? Or is that defo to do with the timing/ cams or crank pulley out of position?

[aa120n]

thats just it i haven't got a fuse labelled efi

[Bobby-H]

Hey guys, if I took out my battery from the car completely to charge it up, then that would reset my ECU yes? Cos when the cam belt was done, and initally started up, it just would not idle at all, the mech ended up having to put a brick on the pedal to keep it going to warm the engine up. Would resetting the ECU make the engine go funny with MY problem of no power at under 2500 revs? Or is that defo to do with the timing/ cams or crank pulley out of position?

resetting the ECU might make the engine run a bit ropey for a few mins but it only takes a few miles driving for it to learn the settings. It might be worth resetting the ECU again to make sure.

[mergli]

thats just it i haven't got a fuse labelled efi

Try looking in the fusebox in the front 'boot' I found an EFi one in there too.

[urotsukidoji_badassdemon]

Lets try this again. Right, before I had my cam belt done, the Battery had gone totally flat, so I took the Battery out to charge over night. I put the Battery back in the car the next day, and had the belt done. When the mech finished, he started the car up, idled a couple of secs, and then cut off. It kept cutting off, so he put a bottle on the gas pedal to keep the engine going to get it warm. I think maybe it was kept to 2500 rpm. When the eingine had warmed up, the bottle was removed, and she idled as normal. NOW, cos the engine was held ' unloaded' , and not driven, would the ecu have NOT set it self correctly? Cos I gotta really bad flat spot below 2500 rpm, where the car just doesn't want to go. Should I disc. the battery for a couple of hours again to reset the ecu, and try driving it instead of holding it revved to reset the ecu? Or wouldn't it make a difference? I don't know if maybe the timing isn't right from when the belt was done, or the ecu isn't reset correctly.

[Jimlad]

the ecu is a self learning ECU... so even if that was the case, the I would presume that it would learn... what was what.

No harm in doing it again though just to make sure.

[Bobby-H]

Lets try this again. Right, before I had my cam belt done, the battery had gone totally flat, so I took the battery out to charge over night. I put the battery back in the car the next day, and had the belt done. When the mech finished, he started the car up, idled a couple of secs, and then cut off. It kept cutting off, so he put a bottle on the gas pedal to keep the engine going to get it warm. I think maybe it was kept to 2500 rpm. When the eingine had warmed up, the bottle was removed, and she idled as normal. NOW, cos the engine was held ' unloaded' , and not driven, would the ecu have NOT set it self correctly? Cos I gotta really bad flat spot below 2500 rpm, where the car just doesn't want to go. Should I disc. the battery for a couple of hours again to reset the ecu, and try driving it instead of holding it revved to reset the ecu? Or wouldn't it make a difference? I don't know if maybe the timing isn't right from when the belt was done, or the ecu isn't reset correctly.

Yes, it could have caused a problem. For the ECU to learn the settings properly you need to drive the car under load not just rev the engine. disconnect the Battery (or take the ECU fuses out) for 5 mins and then reconnect. Then go for a drive for about 10 miles and see if it makes a difference. At least doing this is easier than checking the alignment of the cam pullies so you might as well try it first before pulling the engne to bits.

[Fizz]

i have pulled every singe !Removed! fuse outta the front and back and still no luck!

The car starts fine.. etc etc.. no rough idle and i have hit the brake pedal numerous times and clicked my heels 3 times.. and still the car starts fine..like normal!

Im left with the option to disconnect the Battery!!! but i dont want to mess up my alarm...

[urotsukidoji_badassdemon]

Whats this about pressing the brake pedal 3 times?? This is SOOO confusing, so much stuff to do. Can someone giveme a step by step run down please of how to reset the ECU pls. Starting with disconnecting the Battery. fanx. I don't have to whistle do I?? I can't whistle. :(

[Bibbs]

1. go for a drive to warm up the engine

2. stop the car

3. pull the EF & EFi fuses out the engine bay box

4. tap the brake

5. put in the fuses

6. drive home

[urotsukidoji_badassdemon]

Sorry, what does tapping the brake do again? I tap the brake 3 times yeah?

[GT4 BOOSTER]

it resets the ecu in most cases , clears the memory and fault codes if any .

[urotsukidoji_badassdemon]

Icccccccc, OK, I've just come back from a little jaunt. Warmed the car up after a 15 min drive. Pulled out the EF fuse in the engine compartment, and the EFI fuse under the front bonnet. I left them out for about 3 mins. Is this sufficient time? Or am I supposed to leave it longer? When is it I am suppose to press the brake pedal 3 times? Before putting the fuses back in or after? Do I need to turn the ignition on, then press the pedal, then put in fuses, then drive?