I have noticed my hatch wit b16 will not stay on after I shut it off unless its sat there for awhile. Why will it not stay on? It seems like its fine at first then it will just sputter and die. It will turn back on after about 3-4 times of trying. Any ideas?
One more thing. HOw come I can make the rpms rise when I step on the brakes?

 

the rpms rise thing is because the ecu is adjusting the idle to turn the alternator up for the extra energy consumption from your brake lights. try some fuel injector cleaner.

 

wow that sucks...........have u re-checked ur grounds, did u just put in the b16 or just out off nowhere it started acting up ................

 

might sounds stupid by dads old mustang used to do something that sounds similar try taking the gas cap off and let the pressure off and then try to start it...

 

speaking of gas cap. When my tank is on e, and i go fill up, air comes out when i open the gas cap. I know that is not supposed to happen. And the car stayed on today. It would start up then fall to almost 400 rpm then stay around 800rpm. Any similar problems?

 

Are you saying that you start the car up, it turns over and when you release the key it shuts off? If so I'd say ignition switch.

 

try ur grounds to the starter cuz it happen to me and i had a loose ground making my rpm jump for 3k to 5k and it jerked my car once in a while
just recheck all ur wires to see if its on correctly and retighten if it is ur ground

 

The pressure buildup in your tank is normal. That will happen all the time.
The other problems...main relay maybe? Is it only when the car is hot?

 

Yeah. It only does it when its hot. It will turn on normally then just shake a little and die. After waiting a bit and giving it some gas it will stay on. My ladys 93 integra does the same thing and hers is all stock.