HI My car was appear LIGHT ON "CHECK ENGINE" then disappear few sec when light on steady ENGINE RUN SHAKE then smooth disappear light on. What you suggest my car need repair bad fuel injection, OXYGEN SENSER 02 or replace fuel filter. I own MAXIMA 94 GXE LUXURY 113,000 mileages. I had replace new PUMP WATER AND UPGRADE TIMING BELT IT.

Thank you,

Chaimny!!!

 

I suggest you look in the stickies. for the procedure to run the ECMs self diagnostic and get the codes. which will hopefully tell you what's wrong.
BTW bad injectors don't trip the check engine light. At least mine didn't

 

I have a 91 SE.
I had 3 injectors that read over the expected 10-14ohm readings.
My CEL lit up just like how you're describing it. My engine would sputter at variable lengths of time (at idle, right after startup), and then back to normal.

There was only one or two occasions when my CEL lit up at the same time my engine sputtered while driving on the highway.

I had all 6 of my injectors replaced (about 10K miles on them) and didn't have problems with them since.

It could also be something they call a "fuel injector circuit". Don't really know what that is.

 

HI I went to mechincal they found test fail injector is bad part. i drove normal now some time "check engine" off now normal when I started starter on check engine then disappear few sec.. i put cleaner fuel injector bottle GUMOT with fill up gas i use PERIMUM GAS 93.. I should replace new injector they said lot work pay for labor crazy $$$ 400 to 500 dollars.. DAMN..

Chaimny..