Sparatically runs...

[Andrew7dg]

Getting very fustrated and don't know where to turn. Please help!

Problem is that the car will be running and then all of a sudden will stop running like I turned the key off or something. I have to pull to the side of the road and then I try to start it up and it fires over for 2 seconds and kills on me. If I sit and wait around long enough it wiill start up without the 2 second hesitation. Then I can drive it home without a problem, and it runs JUST FINE like nothing happened. Even took it to WOT to see if I get a hesitation or something. Runs just fine.

I have been fighting this for a while

I thought first that this was a fuel pump issue and so I just got done rewiring my pump with heavy guage wire and putting the pump on a relay
(255 warbro HP) Works really well. Battery was relocated to the back and so it was pretty easy to rewire it (except wiring it down to the pump). I can hear the relay that I installed click on and off and also I can hear the fuel pump itself. I took it out after I did the rewire and was hoping this would fix the problem. Did the same thing and I listened to the fuel pump to see if it was cutting out, it wasn't and sounded strong. Even when the car died on me again. So that didn't fix the problem.

So I am kind of at a loss where to go from here...

Check engine light doesn't come on and I even checked all the codes to see if any fault comes up and doesn't.

So where do I turn to next? Does it sound like it is still in the fuel system? I have an Aeromotive FPR. Could that be going out? The guage reads normal.

What happens when O ring start going out? I should have checked those when the pump was out but too late.. Plus I think they are new because of the new 255.

Spark problem with coil packs?

ECU problems? I have some cap sitting around that I could install but I don't think my ECU is giving me problems.

Fuel rail, injectors? Something injector related?

MAF-T? but wouldn't I get a check engine light? Putting on stock MAS soon to see if that fixes the problem.

I am at a loss right now so any help is appreciated.

DSM making normal people in to insane mechanics since 1989