Hey guys, having some troubles with my 07 Evo IX over here in AUS. Car was running fine until it just cut out on me one day driving to work. Took a few attempts to get it started again but then ran fine for the rest of the day. Now it just keeps stalling on me. It has an aftermarket alarm\immobiliser, exhaust, intake, Walbro fuel pump, EVC and tune. I have taken a few videos to show what happens, what are your opinions? I'm thinking either faulty fuel pump\lines or the idle control valve.

 

First video seem like an immobiliser issue.

Second video confirm that the immobiliser works, at least this time.
Check fuel pressure and do you have a wideband? What is the AFR before that's happening.
Try opening the BISS screw a lot to see if it will continue to die like that.

 

Aftermarket alarm?

 

Rev it up while its trying to die. If it still dies then its not the iacv. Other than that, probably alarm related.

 

I had issues with my alarm too, different, but issues. Had to turn the key sometimes 50+ times to get the starter to work.

yank it and see what happens. thats spark cut.

 

Problem solved. It was the fuel pump assembly harness. Not sure why it fried, my guess would be when I got the after maket fuel pump put in the harness wasn't treated so nicely and the wiring came loose and it was just a matter of time before it fried. To play it safe we replaced the assembly, fuel pump & harness.