Ok i got a 2000 coupe wit a b18a1.. When i start it the rpm is at 25 then when the car is warm up it drop to 16... Here another problem when i b racing it ok untill im in neutral it idels bad at 2 to 3 rpm goin up and down.. So i turn da car off and turn it bac on a everthing is ok.. If anyone know how to fix it holla at me..

 

it kinda sounds like ur IACV is sticking.. try pulling it off and cleaning it out

 

^^^^ this. Or someone could have messed with the idle screw... 25K almost sounds a little high for even an open IACV.

 

sounds like what happened to me. it was a blown head gasket in my case though.

 

wtf blown headgasket? what does that have to do with idle, srs.


Its either IACV or idle screw and IACV. But the bouncing sounds like an IACV problem.

 

maybe its his muffler bearings