hi tr i need help my brakes in my rx7 are not working properly the brakes go all the way down i bleeded the system and still not improvement and my brake booster is making a splashing noise every time i pump my brakes.I also have an idle problem when i tried to start the car when cold it will rev up to 3k and then dies i have to keep my foot on the gas for at least 10 minutes until it warms up and then it wont die but the rpm's fluctuate from 3k to 1k back and forth and when i put it in gear it stops.Need help i just got in the rx7 scene.

 

sounds like you have a blown brake booster and possibly a shot master cylinder