So I finally grew a sack and started on my car. Fired up and idled pretty ok (this was after at least 6 months of not starting/idling) . Let it warm up for about 20-30 minutes, all was fine. AFRs were ok and the engine picked up fine with throttle inputs. Warm idle was a little low for my liking. I was getting ready for a little testdrive, but my laptop died, so I went inside and did other stuff. An hour or so later, started the car again, then dies after about 10 seconds and was very hesitant on any throttle inputs. I haven't changed anything between that first startup that went ok, and the second one.

I logged the second attempt. Car did this for about 4 times, same result. Start ok, then die after a couple of seconds. Idled fine at 1500ish rpm, then deadness all of a sudden.

Halp.

Details of car in sig, no significant changes.


Edit: added my current .msq file.

 

I haven't looked at your log, but I can tell you I had the same problem with my car when the fuel pump relay output in my megasquirt died. I have yet to fix it, I just have a jumper wire in the diag box, not a strictly safe setup, but... umm, I'm lazy and don't plan on wrecking my car.

 

You didn't set your WUE to zero did you?

 

No. I can keep it running with my foot on the throttle. Then my foot cramps up, I get fed up and do other stuff. Any other ideas?

Added a log from this afternoon. Same ****, different day

 

Your IACstep goes from 128 to 63 and then it dies.
PWMIdleDuty goes from 50 to 24.6 at the same time.

Status2 goes to 128, dunno what that is?
Is it pig rich or do you have a different WBO2?

 

Don't know either about the Status2. AFRs were in the 11s for a couple of secs. LC-1 WBO2.