Need to check vaccum lines a bad throttle position sensor bad map sensor or any other number of things could be wrong with it. You may need to take it to a shop and have them diagnose it with a scanner in order to get the proper diagnosis.
1986-1989 Honda Accord with Carburetor have a very bad habit that is little known even by most mechanics but easily fixed at home. The vacuum port on the choke opener that is connected to the intake manifold and both vacuum ports on the fast idle unloader get plugged up with nasty hard carbon almost as hard as metal. When this happens the choke sticks closed and the idle sticks on fast idle when the engine is cold and nobody can figure out why. All you have to do is attach a small drill bit to the end of a flexible socket-driver extension and put it in a variable speed drill that will let you run it real slow and carefully drill out the vacuum ports that are plugged. After they are nice and clean use a vacuum pump tester to make sure the choke opener and fast idle unloader are working before putting it all back together.
My Honda, in good running condition, idles at 700 RPM This is what it idled when it was new. For the 1989 Honda your idle speed should be between 750-1000 RPM and if you have any questions look under your hood and it will tell you right there.
'90 Honda Accord will start but shut off. What could this problem be?
Honda Accord 1998-2002 model GEN 6 idle speed is control by internal computer. You need to bring it to the dealer to adjust this.
check the vacuum hoses
To increase idle on the 2004 Honda Accord petrol model, apply carb cleaner on the adjustment screw on the throttle body to loosen up any form of debris. The car that I am enquiring about is UK model of a honda accord.
The idle for a 1986 Honda Accord is adjusted by a idle air control valve. These function by either tightening or loosening the valve. This controls how much air is allowed into the system, more air means higher idle and less means lower.
it should be on the throttle body
Go to the mechanic down the blocc
The idle air control valve controls the neutral idle of the 2001 Honda Accord. A faulty idle control valve leads to an erratic idle. To replace it first locate the valve on the intake manifold. Unplug the unit and remove the three bolts holding it to the manifold.
A 1994 Honda Accord can stall when gas is given due to a faulty Idle air control valve. This part controls the idle of the vehicle if it malfunctions the car can shut off at random times.
if its an 2.0 then there should be a cable wuth too bolts u lossin tha top and blot up tha bottem one
right on the side of the throttle body.
Engine miss at idle. Can be caused by vacuum leak.
Just fixed this, was a loose vacuum line next to intake
1990 Honda accord ex how would you know if idle air control valve is bad?
Fast idle motor is not functioning properly.
Only when it fails.
its the valve on the right side. mounted on the intake manifold. if u remove it and clean it realy good, you can re-use it and it will fix the irratic high/low idle.
The cause of high engine idle and surges in the 1989 Corvette is due to..Read More
this should be A cheap fix, I would guess around $25 to $60, Take it to A shop and tell them you want the idle air motor or port cleaned.
IACV - Idle Air Control Valve Your car is probably experiencing rough idle.
a vacuum leak can cause high idle
Check your radiator is full
A 1994 Honda Accord can shut off for a number of reasons. The most common are lack of fuel or air. If there is a vacuum leak the car will idle erratically and shut off. When a car runs to lean it may not be able to hold an idle.