Hi everyone new to this. But I have a 1996 honda accord and from time to time my idle will go up and down to the point where it feels like it is about to turn off. I filled it with antifreeze and it still does it. Also my check engin light is on and a mechanic said that it was a gsr sensor or valve not sure but does anyone know what i can do to fix these problems?

 

welcome to the forum. throttle position sensor or map sensor,may cause your idle to go up and down when warm, if cold it could be the idle control valve.also there is a bleed for the anti-freeze when you replace the fluid, it should be bled.