Car died at 140mph, opinions.

[spaldingpm]

So, the other night I was doing a roll with my buddies c5z. Well upon shut down (let it coast in neutral) at the top of 4th, I look down and notice the rpms are at 0, and the check engine and a few other lights were on (as you would see before you start your car).
Any ideas why it did this?

Mods:
2.93
4lb
O/r exhaust

I do not have a 3.2 or 3.5 alt pulley. Could I have been spinning that thing so fast, it overloaded and forced it to turn off?

 

[gt347mustang]

Does the car run at all now?

Did the passanger side floor board fall to the ground and start shooting sparks? There's a good chance you blew the welds on the intake manifold.

 

[SonicDTR]

I've had it happen on a variety of vehicles if coasting at a high speed. If the car runs fine now then I wouldnt worry too much about it. Could be as simple as a dirty IAC or a slight tweak of the tune needed.

 

[MaximumVelocity]

140mph winds hitting the MAF next to an open K&N filter, and then popping the car in neutral making the rpm fall suddenly will do that. MAF sees more flow than is needed to idle , dumps fuel, car stalls...

Next time, decelerate in gear.

 

[WHITESTRIPES]

Ya this use to happen to me as well, before I put my fogs in my new bumper the filter was exposed and putting it in neutral to coast at a high speed would shut the motor down every time. I read another explanation on this a while back and it was just as MaximumVelocity is saying. I would slow down in gear, you'll want your powersteering

 

[13COBRA]

+1,000,000 to slowing down in gear.