I was datalogging my 06 Evo 9 MR and at 100% throttle at 7525 RPM it sputtered and died. Now it doesnt start back up. It doesnt seem to be getting any spark or fuel. I checked to see if it jumped timing but that doesnt seem to be the case. Also a few minutes prior it threw a P0300 Random missfire code. I dont even know where to begin diognosing. The mods are fairly extenssive but I dont see how any of them would cause this, Any help or input would be greatly appriciated.

 

Also the car cranks over fine just like it always does with no weird sounds...I had the bottom end built with rods pistons and ARP studs throughout, and just put it back together with brand new gaskets, belts and everything else that one would normally replace. There is maybe 4000 miles on it. Its been tuned. Im running meth injection and have a wideband and I log the car almost every day.

 

my advise start with the simplest thing, spark and fuel like you said. See if you have spark at the coil/wire if not test the circuit to the coil etc and work your way back. Same thing with the fuel, see if you have fuel going to the rail if not work back to the pump electrical so on. Eliminate the basic simple things first before considering mod related and overwhelming yourself.

 

check the crank sensor

 

Engine fuse under the hood gets my vote.

 

+1, dont rule fuses out.

My car did a similar thing and i spent hundreds of dollars in diagnostic tests (AEM EMS, etc) just to find out it was a 10 cent fuse.

 

I was originally thinking it could have been the cam angle sensor as I heard someone say once once that when you compresion test to pull the clip off and it cuts both fuel and spark, that but visually it looks fine. The plug to the crank angle sensor looks fine but the sensor itself is behind the timing cover so im gonna go ahead and pull that off and check. And Before I even do any of that Illl check all the fuses. Thanks for the help guys I wasnt thinking very clearly being stuck on the side of the road in the middle of the night in pouring rain lol.

 

I am almost positive its the fuse. I had the EXACT same problem while coming back from Columbia. $2 fix

 

which fuse would that be?

 

there is one in the cab that is engine labeled... it blows pretty regularly as of late.

 

thanks

 

Checked the fuses in both the in cab and under hood box they all seem fine

 

checked the IC pipes?..make sure none didn't blow off

 

The ic piping wouldnt kill spark and fuel...

 

hmmm.....well like people have said to start small. Have you tried disconnecting the battery for about 10 minutes then putting it back on and trying. It's something to try before you start tearing stuff apart. That random misfire code makes me worry that you didn't blow something up since the car had some misfire then you romped on it. Can you pull any other codes off the car? Have you tried that?