I also facing the same problem. The problem occur after i clock 1,000km upon overhauled the car. when first occur the car just would suddenly off engine after it reaches it's operating temp. Diagnose it shows an error code 22 and 14 which represent ignition problem and water temperature sensor. Tried to borrow few of the water temp sensor but the problem still persist. Then i start changing;
1. Ignition Coil
after one week still occur
2. Distributor (it seems the distributor is already in bad condition)
still does not resolve the problem
3. Change to a new Blacktop 5 speed fuel pump
after one week happen again..this time..completely couldn't start!
Then diagnose again, shows faulty code..so then open up the ECU...there are two spots that burn out at the IC Board. Then i change to a 2nd hand ECU.
after a piece of mind for 300km..then the car starts jerking after i past 2,500rpm..DAMN!!! Last night i try to reset the ECU. During the reset process, the car is fine...like rev from (30m/h ~60km/h) , (30m/h ~70km/h), (30m/h ~80km/h), (30m/h ~100km/h) ..rev up to 7k rpm.
After that, i did my normal driving style..again the car starts jerking and semput after 2,500rpm..
Have discuss this with levin818...so now the possible reason could be the O2 sensor or the petrol filter..
Will also keep you guys update on this. Hope we can have a fruitful discussion and i could solve my problem