freq

iTrader: (6)

With no load on the car(neutral), rev it up and around 4k it cuts out.
Put it in gear, and I can get up to about 2500 rpm before it'll cut out.

Does this sound like an issue with the alternator, coils or maybe a grounding issue?

Rotary Alkymist

Could you describe how it cuts out?

Over the internet it does seem like a fuel issue at first glance.

When did this start happening? What has been done to fuel system? Ignition system? A list of what's been done would help us.

freq

iTrader: (6)

'Cuts Out:' shuts off as if I turned the ignition to off. Doesn't slowly die, it's immediate.



I guess I'm looking for info as to how to diagnose because I've replaced much since last I had it on the road, so it's hard for me to figure out which component is likely to cause the issue.



The engine has been rebuilt<5k

Injectors<5k

Replaced the body-battery ground

Replaced the alternator-battery wire

Replaced injector wiring

Rebuilt 3rdgen alternator<5k

Haltech high output ignition coils<10k

Refurbed CAS<5k

Replaced CAS wiring

Haltech elite 1500<10k

Walbro fuel pump <10k

FPR<5k

BNR turbo



I think that's the majority that's been done.

I haven't driven it much in the past 2 years and not at all in the past year. This started happening just before I stopped driving it a year ago(didn't have the time to dig into the cause of this problem then). Initially, there would be a cutout around 4k, but would come back on-similar to the 3800rpm issue, (but I'm not running the stock ecu and I don't believe my secondaries are staggered like stock). This would happen under load. Now this happens with no load, but under load it will totally shut down.

Rotary Alkymist

Fuel filter? Fuel sock?

freq

iTrader: (6)

I changed the fuel filter when I changed the engine. Also, the fuel pressure gauge doesn't show a pressure drop when it cuts out.

freq

iTrader: (6)

I replaced the fuel filter<10k ago, also the fuel pressure gauges doesn't show a pressure drop when it cuts off.

freq

iTrader: (6)

Replaced the Haltech and been running for a few days with no issues so far. I guess when all else fails, swap out the ecu.