Thanks to all bros who had comment...
zan : u're definately right, if the ECU is totally KO then of course it will tell us. But I would love to know how to tell if it's NOT totally faulty but part of it or going to KO?
SkYwAlKeR : at this moment, I would juz like to know whether my ECU is faulty. My car jerks for no apparent reason, after changing and checking all things such as; spark plugs, fuel pump, injectors, plug cable, throttle body....errrrm I thk it's abt that. But it still jerks?? Hai...tot of checking the ECU and fuel tank. Any idea? And would be glad if you could share how to check an ECU if I would hv to replace it. Thanks...
xerofighter : how abt manual? I'm driving manual. My car jerks as u've mentioned but no check lights on...what the heck! Cant seem to fix it. At the moment none of the mechanics are able to diagnose what's the problem.
Vacuum hose too is replaced! Any other things that would cause a car to jerk?? HELP!!! So damn frustrated to drive ever since, feel like juz taking a bus!