Any time engine jerk/semput semput dan check engine light up short while

[Mat Indera]

My wira 4g93t with evo3 air flow sensor, td05 turbo, 510cc, evo3 rechip ecu for 2 bar, afr, 255l fuel pump. All inside/outside upgraded. Run smoothly for a year. I set max for 1.2 bar boost only. Last 3 days ago suddently engine check light flashing sometime than dissappear. Yesterday the engine become jerk @ semput semput for short while and back to normal again. It happen at any rpm. When jerk/semput check engine flashing shortwhile. Clearly to me it disturb the fuel and/or ignition system. Fuel filter and fuel pump rule out- aready checked.

Sometime I can drive for an hour with out a problem. Sometime it happen 2-3 time within 5 minutes. Jerking/semput shortwhile than back to normal again.

Guys can you help?.

 

[vr2turbo]

Tried ECU scan already? Check engine light comes on can be many things. Even when I wash VR engine bay, sometimes check engine comes on but no problem driving. Then after engine heats up the light goes away....:rolleyes:

 

[Mat Indera]

Will try but in the workshop during idling everything ok. No check light and idling smooth. Since 3-4 days raining everyday and car driving during raining. Want to wait shinny and hot day and see what happen. Just know cleaning air filter and air flow sensor/ socket.

 

[vr2turbo]

Yup, can be dirty sensors also. O2 sensor going also can have check light on and off....

 

[^pomen_GTR^]

just clean your MAF sensor....usually that would be the cause....

 

[Mat Indera]

Cleaned MAF and drive for half an hour still normal. No semput semput no check engine light flashing

 

[DanzEterna]

check power TR unit.

 

[pac_jb]

I had the same problem last time, mine was the maf sensor connector was lose, so I bought long cable tie and tied up the maf connector and try to check ur spark plug

 

[Mat Indera]

After cleaning maf and connection already drive for 2 hrs still ok. No jerking or semput. Weather also hot day.

 

[Mat Indera]

yesterday I drive for another 5 hours, engine ok. The work I m doing are cleaning MAF/ socket, cleaning air filter, re-tighten the cam sensor socket, re-tighten loose hose clamp at turbo inlet . I dont know which one is a real problem.

 

[vr2turbo]

The main thing is problem solved?