Rep Power: 0

When i floor it, and then i brake the car justd shut off why is that ?

 
Rep Power: 298

Might be running too rich. could be dumping too much fuel and then when the car stops, it bogs down

 
Rep Power: 0

any cels?

 
Rep Power: 0

no cels?

 
Rep Power: 293

Only when you brake it does this? What about putting in the clutch?

 
Rep Power: 0

yep and putting in the clutch.

 
Rep Power: 293

Maybe your battery is not holding a charge do you have a stereo system?

 
Rep Power: 0

nop i only have a pioneer dvd and i have a optima red battery

 
Rep Power: 293

Its just cause your rich then what about your spark plugs did you check them out?

 
Rep Power: 295

Same happened to me when I was racing last week. I have nitrous though. I let off the gas at the end of run and put it in neutral simultaneously and my car shut down. It was sorta scary going like 90 with no PS or power brakes. Pulled over at the end of the track got out and made sure I didn't blow up anything like a HG or something and everything was fine. Got back in and it started right back up with no CEL or anything.

 
Rep Power: 293

I think it has to do with your alternators because when you have the clutch in i dont think the alternator is charging up your car so it dies if you pop the clutch out i bet it starts right up because that happens to me but i have a huge system once i got a optima yellow top and a h.o. alternator its good to go

 
Rep Power: 0

yup michalo, i push the clutch and the car die, and i pop it then the car cames again ..... im going to check that thanks ...

 
Rep Power: 285

do you have alcohol injection?

 
Rep Power: 293

^^ Just out of curiosity why do you ask this?

 
Rep Power: 285

if you are running a boost activated alcohol injection system, and you reference it from an intercooler pipe, you have a problem.

When alcohol injection is referenced from an intercoler pipe, it can see boost and activate when it is not needed. This is mainly when you are on the throttle, then you suddenty let off. This creates a spike in pressure in the intercooler pipe (hence the reason you need a BOV), and this spike activates the pressure switch that runs the alcohol injection. When this happens, it injects alcohol into the throttle body. This extra fuel causes the car to bog (since there is not enough air) and the car dies.

You can fix this by referencing the alcohol injection off of manifold pressure instead of charge pipe pressure.

 
Rep Power: 293

I did not know that thanks for the info