Did you thoroughly purge the cooling system of air? Is the
cooling system topped off?

Starting from cold engine, this will require idling the car
for 40 minutes or so to get the fan to come on twice.

Air in the cooling system will result in inadequate
temperatures of certain engine control components,
potentially throwing off the idle.

My Chilton's manual covers the 94 Civic. "Checking and
Adjusting the Timing" is in Section 2, under "Ignition
Timing."

"tek" <tek_notes@bellsouth.net> wrote
> Hi all. This is my first post to the group I hope I'm able
> to get help.
>
> I have a 94 Honda Civic D16Z6 1.6L V-Tech. It overheated
> and warped the
> head. I replaced all gaskets mill had the head milled flat
> and pressure
> tested. Replace a busted throttle body (it was broken
> during removal).
> And all attached sensors. Removed and check IAC Valve.
> Engine sounds
> good, sounds great actually. No pinging or valve ticks.
> However the car
> idle eratically after being on for only minutes. Pressing
> on the gas
> causes the engine to hold a steady rpm above 1600. The
> pedal to engine
> response is good which makes me think this is not a timing
> issue. I
> have no idea how to check the timing. I have a Chiltons
> manual but
> could find nothing listed. What could cause this other
> than known
> sensor issues TPS, IACV, FITV, no codes to display, the
> engine light
> never comes on. Engine does not overheat. Just a very very
> eratic idle,
> 1000 - 1600 rpm. I'm tired of everyone thinking I want to
> race them at
> red lights. Can anyone think of any other known issues?
>
> Help is GREATLY Appreciated!!!!
>