[Markykinns]

Okay so i have a 09 civic si on cte blower, grams tb, skunk 2 cai, on 1000cc injectors
So my car runs but after driving for a little bit( no more than 20 minutes) it just dies, if i push the throttle i can hear my throttle body opening, powersteering is still on , but as soon as my rpms hit 1k thats when the engine shuts down. And then i would have to wait for a while to start her back up and repeat this process, if i try to start my car too early, it would crank but not start.

i put in a new alternator, battery, cleaned my grounds to my valve cover, trans, battery, fuel injectors, and fuel pump. I swapped out spark plugs as well.
I noticed that my fuel pressure dont last as long anymore, it would used to hold 70 psi for a while after i shut my car off but now it goes down super fast after i shut it down, could my fuel pump be the issue?? This is my current daily so some fast help would be greatly appreciated!

 

[henryanthony]

I once had an old car, not a Honda, that - all of a sudden - would only run for 20 minutes, die, and then not start again for twenty minutes. Had to drive 300 miles like that. Turned out to be a bad engine control unit. The old heap ran fine after replacing it. The symptoms you describe seem similar.

HTH!

 

[Markykinns]

I once had an old car, not a Honda, that - all of a sudden - would only run for 20 minutes, die, and then not start again for twenty minutes. Had to drive 300 miles like that. Turned out to be a bad engine control unit. The old heap ran fine after replacing it. The symptoms you describe seem similar.

HTH!

i deff will look into that, thank you!

 

[Bdubz5]

It could be a sensor like a cam or crank position sensor malfunctioning. I'd hookup your flashpro and see if you are getting any codes or take it for a drive and make sure you take a log and send it to the person who tuned your car and see if they can see anything in the log ya know..

 

[94Vig06Civ]

Bad Mass Airflow sensor can cause engine shut down

 

[henryanthony]

Did you ever resolve this issue? If not, this thread may be of interest:

07 civic crank no start

Hey, so to sum up my problem, this past friday i had trouble starting my car but eventually it started up no problem, later that day i had an issue again with the car starting my temperature gauge never read anything over half when the car was turned off, but when i went to start it up it showed...

www.8thcivic.com

 

[Markykinns]

I once had an old car, not a Honda, that - all of a sudden - would only run for 20 minutes, die, and then not start again for twenty minutes. Had to drive 300 miles like that. Turned out to be a bad engine control unit. The old heap ran fine after replacing it. The symptoms you describe seem similar.

HTH!

So i swapped out my ecu but the problem persists