Im working on a 1994 del sol si with the d16z6. I have changed the plugs,cables entire distributor, fuel filter and cleaned both the IACV and FITV. Car runs fine while driving but when you come to a stop or let the car idle it shakes and acts like it has a miss. Checked that the injectors are pulsating and that there is good fuel pressure. Only CEL is for primary O2 sensor. I have read the FAQs and i have checked for vacuum leaks. Thanks in advance, heres the video:

http://youtu.be/uSVgOQ1V58k

 

Had the same problem. Check ur timing, if keeps doing it raise ur idle a lil bit. Also i put seafoam in the gas tank

Good luck

 

Have you change your spark plug at all? Any engine check light pop up?

It might be a easy bad earth, or blocked injector. Or try to adjust your idle screw.

 

Fix the O2 sensor code, replace the PCV valve, and adjust the idle speed.

 

How many miles on it?

Check your compression.

Also adjust the valves, sounds a little noisy.

 

169k . Compression is good and adjusted the idle screw and new PVC valve. No change.

 

Did you exactly follow the service manual procedure in the diagram?

What O2 sensor code do you have? Fix it.