is on the driver side behind the cylinder head below the fuel injection rail hose goes to the Plenum which is the big silver intake deal
The 1989 Honda Civic is not equipped with an EGR valve.
no where
the fuel filter is located on the firewall
Under the dashboard in the left compartment
yes
Under the drivers side dash
The spark plug gap for a 1989 Honda Civic LX is .044" (1.11mm).
The Throttle Position Sensor is located on the throttle body
In the intake manifold plenium, its a 2 wire sensor
Not sure about the 1989, but 1990-1993 it goes into the valve cover. Look for a hose running to the valve cover and the PCV valve should be what is at the end of it pushed into the valve cover.
I have a 1989 civic dx: door 6.5", rear deck, 6.5"
You can't.