If it's a 1.8 with a paper element oil filter....
There is a small hole in the throttle body that get blocked up with carbon deposits. This can cause stalling problems.
There is a small pipe going to the side of the throttle body (about 10 mm in Diameter) remove this pipe and use a carburettor cleaner to unblock the hole.
There is a factory re-work to address this problem, but it's too complicated to spell out here.
A less likely cause it that the throttle body is it self faulty, and needs replacing.
The Idle speed control serves a few functions such as increasing the idle when the vehicle is cold to keep it from stalling. It also responds to increased engine load such as when you turn on the air conditioning or turn the steering wheel at idle. Without the idle speed solenoid the vehicle would stall nearly every time you came to a stop.
idle control valve is shot!!
you need to replace the idle regulator and re initaiise it. idle regulator needs to be replaced and then reinitalised via a suitable diagnostic tool.
Most of the time rough running and stalling is due to vacuum leaks. There is more of a load on the engine when it is in gear, so that lends itself to stalling out. When I look for vacuum leaks, I have the engine idling (maybe you need a friend to keep it from stalling) and then spray carburetor cleaner around the various hoses & gaskets that could be leaking. Any increase in the idle speed would be an indicator that you have a leak in that area.
I believe you need to drive it so the ECM relearns it's idle.
aint that the icv it regulates air at idle when the throttle body is closed this stops dips in revs or stalling when foot is off the accelerator and on the brake it lets an amount of air to bypass the closed throttle valve to keep a steady idle rev speed of engine it also works when a heavy load is placed on engine at idle / closed throttle heavy load usually being radiator fan coming on at temperature also aircon switched on although the cars ecu may have an inbuilt raised idle speed for when aircon is switched on.
Keep engine running idle speed
because its a retard
It hates you
A common cause for a stalling 1996 Honda Civic is a vacuum leak. Check the vacuum diagram for the vehicle and is if there are any leaking air lines.
your vehicle needs an idle relearn needs to be done by a Mitsubishi agentmay also have a faulty stepper motor for the idle control or the battery may be losing to much voltage during start up
Idle speed set too high most likely. Also could be carbon deposits inside cylinder. There are a few other option, but the cheapest to check and fix is idle speed.