Help please - engine troubles

[topi]

Ok I\'ve got a street ported 13b, rebuilt, apexi power fc, 850cc inj, gt4082 turbo and what should be new plugs etc.

Cars been running fine, and then this morning on the way to work it cuts out suddenly.

I left it for 2 mins and then started it up... after a few seconds it suddenly cut again. It did this a few times and now wont start.

The car smells petrolly so I\'m guessing the pump is ok.

I checked that there was a spark getting through and there was... but only a couple of times?
So I\'m guessing this will be the problem.. but what would cause that?

So far I\'m thinking it\'s the crank sensor or the amplifier? Any light?

There\'s supposed to be a guy viewing the car tomorro so I need to sort it asap

[R1Dude]

I had exactly the same problem with similar set up, it was a broken wire to one of the crank angle sensors.

[topi]

Hmmm so I\'ll check the wiring. And if it isn\'t the wiring then it must be the sensor itself?

[R1Dude]

I would put money on the wiring, although my knowledge isn`t as high as most on here but I believe jap sensors and stuff like that are bulletproof

[lee mills]

What ecu are u running. Had a similsr problem a while back and my apexi had decided to die:eek:

[topi]

Apexi PowerFC mate. It best not of died.

Which sensor is the crank sensor, there\'s 2 behind the pulley?

[DR SCHNITZEL]

its both of them i think? id like to know for sure myself though

[chris]

It needs both of them. The ecu sees the 24 signals from the inner one but needs a reference to know what part of the cycle it is on, for this it uses the outer sensor which sees the single peg on the disc. Ecu\'s usually only reference the single sync once during startup, from there on it counts each pulse.

[leon]

Hey Topi, I was going to say use the diagnostic box port and the LED trick but as you are using a PFC you don\'t need to do that, if you have the commander have a look on the sensor screen and it should tell you if any sensors are not working.  I had an issue where the engine would cut at intermitant times and it turned out to be the water sensor wire touching out onto the water neck! :3Confused

[topi]

Leon, is this possible with just the ignition on? As my commander doesn\'t seem to load up until the engine is running? With just the ignition, the commander stays on the APEXi screen.

[leon]

I dont know i dont use the apexi if the engine dies as soon as you try to fire it, is the commander screen still there for you to look at? if you want to rule out the ECU i have a standard ECU you can borrow/have

[topi]

The only problem is the big injectors, porting and turbo etc - I\'m not sure a standard ECU would run the car?

[leon]

Tis a verry good point! When your car cuts does the power to the commander drop or are you still able to see the data from it? but the standard ecu may be of use to diagnose a sensor being out as it will still flag a sensor being defunct or out of range on the LED flash test. but i can imaigne if your apexi is good you can get everything from there.

[topi]

Hmmm, I\'ll go and have a fiddle now I think.

The standard ECU idea might be one worth trying actually. The car should even run, but badly.

[topi]

Right, the commander deffinately wont do anything with the car just on IGN.

Also, with the ignition turned on, after a while I was getting some freaky noises comin from the coilpack area and what seemed to be the ABS kind of area? Like a shorting out kind of noise.

And strangely, the electric fans kick in randomly?

What the hell.