A rough idle in a 1995 Honda Civic can be caused by several factors, including a dirty or faulty idle air control valve, worn spark plugs, or issues with the fuel system such as a clogged fuel filter. Additionally, vacuum leaks in the intake system or problems with the engine's sensors, like the mass airflow or throttle position sensor, can also contribute to irregular idling. Regular maintenance and diagnostic checks can help identify and resolve the underlying issue.
IF ITS JUST AT IDLE, CHECK YOUR IDLE AIR CONTROL VALVE IF IT HAS ONE.
Bad oxygen sensor
Bad Valves or fuel pump usually from redlining the care
Idle on a 1985 Honda Civic is adjusted through a idle air control valve. This valve is located near the intake. Adjust the valve by either loosen or tightening it.
The idle speed on a 1996 Honda Civic is adjusted using an IACV. The IACV, or idle air control valve, lowers and raises the idle by either being tighten or loosen.
To adjust the idle on a 2005 Honda Civic locate the idle control valve. The IACV and is found near the intake manifold. Open the top of the valve and tighten it to lower the idle or loosen it to raise it.
Idle Air Control Valve.
The Honda Civic loses idle at stop due to not have consistent air flow. The engine will run too lean and cause the car to shut off.
What can cause a 1195 Oldsmobile to idle rough?
The idle speed on a 2001 Honda Civic is adjusted through the idle air control valve. The valve is located behind the intake manifold. Open the cover using a screwdriver and tighten the valve to lower the idle.
Your 1994 Honda Civic will overheat when the thermostat is malfunctioning. The overheated engine can experience the idle to surge. The engine should be turned off immediately.
Because of the loss of backpressure if can affect the idle.