need help !! running on 5 cylinders , i think ..

[QC89GTST]

Ok , so i am a farly new 89 gts-t RB20DET owner ...

I was crusing around the other day , everything was fine , went to the mall , stopped the car for about 30 min , when i came back and started the car , i was running really bad , no problem starting , i can still drive it , but its really not runnig smoothly, the engine is shaking .... i`m french , so i am not really sure how to explain it ...

anyway , it cant be the plugs or the coils , brand new NGK and new SPLITFIRE( by the way found a good place to get them, 530 $ shipped , got them fast to ) all the fuilds are fine ... i am sure its running on 5 cylinders , it sound almost like an old GM car ... lol

I would just like to get an idea of what arew the possibilities ....

Please, any comments or help would be appreciated ......:hit_head:

[kelaog]

One thing you might want to do is check all the grounds. Next thing you want to do is make sure your ECU is screwed in tightly. I hear this can cause problems.

Then you might want to check your timing, and see if all of the cylinders are firing, and as well as the injector pulses. Do all of your spark plugs have spark?

Also you might want to check all your couplers just tighten everything down and see if it solves your problem.