Car Simply Cut-out

[simpletool]

Hi all,

OK on the way home from the airport the strangest thing happened and I just want to make sure I'm not crazy.

I was driving home (went over the train tracks) and the car just spluttered a bit then died (took about 5 seconds). (I know I know, must be some loose wiring somewhere I guess)

But I pulled over, turned the car off then on, and it started fine and I drove another 30mins home.

So my question is:

If the car ignition was switched on, and power somehow was cut for a second or two , surely the car should just restart from the rolling, effectively jump starting, but it didn't. Instead I had to turn it off and on then it worked fine.

This seems very weird to me and makes me think of some ECU problem. Car was running poorly on more than ~80% throttle the other day, and I tuned the boost back from 10psi to 8psi seems to be fine now - until this.

Hasn't been a problem for the past 2 years apart from usual common issues of coil packs (got splitfires), and radiator (now a big one). This one has me a bit worried. If it happens again I'm going to go hunting.

Note: I have a SAFC2 but wiring seems sound.

[W0rp3D]

I had a similar problem, turned out to be dodgy contacts inside the afm, mine started happening once or twice and in the end it was cutting out every k or less, changed afm and all was good.

[s13rb20pplater]

hmmm my car did this before, just turned out to be vacuum leaks and bov wasnt secured down....

[simpletool]

Yeah well to update.... it MIGHT be my SAFC, as I changed the setting to run the 2nd map (one I've never tuned - it's just flat) and then it started this stalling that night. 2 days ago I changed back to the 1st map and it hasn't done it in 1.5 hours worth of driving. If it doesn't happen again I can assume this is the problem. But thanks for posting guys. I've had vacuum leaks before (on a few cars) doesn't seem anything like that, and if I pull the AFM out completely the car still idles ok, just does a rev then quick idle hunt, then idles fine.

I can't get my head around how a map change in SAFC would cause the car to just cut out like that though, so I'm dubious as to whether this is the problem.

[simpletool]

Just to update and close this topic. I've driven it about 5 hours drive time since setting the maps back to the original one and no stalling issues since.

It must have been a setting in the SAFC that changed when I changed the maps. All good now.