Thanks LEON R and SinJin ...I already go to AutoZone and test the starting/charging system check with their VAT-40 and everything pass nothing wrong??? The clerk say may be your computer had problem!!! In this case if any way possible use any thing to check the ECU??? Or had any more idea I can try before I need to replace the ECU...

Any one changes the ECU before??? And If I need to change the ECU ...did I need to re-program or just plug and play????

And any one had well but use ECU (for 1999 VX)for sale and how much??? ... In case I need one
Thanks