Might be a simple question
 

My 93 civic EX is idiling at a low RPM. I adjusted the idle screw
until it was almost out of the car, the RPM's never went higher.

Anyone ever seen this type of behavior?

The car idles at a pretty constant 250 - 300 RPM after it is warmed up.


It runs fine and all but I was told it should be in the 800 - 900 RPM
range. I guess the real question is

1) Does this matter at all?
2) What could be the cause?

If this matters if someone could point me in the right direction it
would be awesome. I have purchaced a new PCV valve but have not
installed it as of yet, not sure if that matter for low idle I know it
can cause rought idle.