Strange and confusing problem!!!!!!

[paigeness]

Engine: sr20 turbo

Car was running great until driven for about 45 mins, then it feels like there is a boost leak or the fuel is cut off. Once the engine is turned off for a few seconds and then turned back on than it will work temporarily.. like it is resetting itself or something..

new fuel and air filters have been installed.

Please help!

[SirSilvia]

I would try and read the codes its spitting out because it definitely should be. it's like a sensor might be getting over heated or something then telling the ECU to act a certain way and when you restart the car its ok till it read the sensor again. But i really don't know

[Dittoz7]

Check Oil And Coolant.

[180sx boy]

is there any pressuse building up in your fuel tank? if so i think i have an answer fo ya

[paigeness]

Yea, I believe there might be. When unscrewed the gas cap it would fix the problem temporarily. When tried driving with it off though the problem was still there.

[180sx boy]

sounds to me like your boost pressure in pressurising your fuel system. you said that it happens just as the turbo is about to kick in, so i think as boost pressure is rising in the manifold its also rising in your tank which causes the pressure in the fuel rail to rise rapidly and opens your pressure relief valve on the end of the rail allowing the fuel to return to tank just as its needed. the only way i think the boost could get to your take is through the carbon canister.......? your manifold draws fuel vapours from the tank through the carbon canister so i think its doing the oposite when boost pressure rises. there should be a small check/one-way valve between it and the manifold. check it out