Rep Power: 0

I got my new ej9 about a month ago and its had no problems what so ever up untill a couple of days ago. for some reason my car turns off when am slowing down and shifting down gears. its like the car is stalling but am not staionary. it dosent happen all the time but when it does ive noticed it happens when am shifting from 4th down to 3rd and am dipping the clutch to change gear and the revs drop down to zero and the engine turns off. i have no idea what could be wrong if anyone could advise me what it roughly could be before i end up spending a fortune on trying to find out whats wrong

cheers

 
Rep Power: 0

what kind of motor is it and what kind of ecu are you running with it... if its the wrong ecu it could be the problem...

 
Rep Power: 0

its a standard 1.4 ej9, i dont think the owner before me changed anything. some freinds say that it might be something to do with the idle controll valve.