low idle almost dies

[respusnam55]

my 98 civic ex is having some issues with idling once it warms up. its idling under 500 and wants to die when i pump the breaks the idle goes up to 1000 but when i stop i drops all the way down to a hundred then just about dies i hear the intake inhale then it goes up to maybe 200. what do you think is wrong? thanks

[Kastigir]

First guess...major vacuum leak.

[respusnam55]

thats what i thought too but i dont have very many vacuum lines or im not lookin in the right area any ideas on where to look?

First guess...major vacuum leak.

[Turtlehead]

I agree with the vacuum leak idea. Sounds like an issue with the brake booster system (potentially).