Problem diagnosis: 1G with DSMLink dies in gear, doesn't restart

[derekste]

Car has been reliable for the past 6 months. Took it out this weekend to show it to a potential buyer. Let him drive it around the parking lot where he stalled it a bunch. Didn't think anything of it.

On the way home, I'm cruising along in gear and the RPM needle drops to zero. All other electronics (dash lights, radio, radar detector) stay on. Before I had time to react, the car comes back to life (since it was still in gear).

Got the car home, then took it out for a drive a few hours later. Same thing, although this time it stops and won't restart for about 10 minutes. Get it started and drive it home.

Took the car out one last time last night to see if it was reliable to drive into work, and the car died about 2 miles from my house and refused to restart. Towed home, and wouldn't start this morning.

Symptoms:
-car turns over
-all electronics work
-fuel pump primes/runs

So obviously there is a fuel or spark problem... anyone have any idea where to begin looking? Car is a mostly stock 6-bolt with a 16G, DSMlink (tuned 1/3/08 by AMS). I have yet to hook up the laptop to see if DSMlink is still acting sane, but even when I do, I am not sure what to look for. Any input appreciated!

 

[derekste]

:-/ I have a pretty custom tune and DSMLink... DSMLink is still operational, I think it is the CAS. I'll let ya know..

 

[FonZ454]

My car did the same thing. It turned out being a cheap relay I used when I rewired my fuel pump. But you say yours works fine? How do you know? Stock the pump won't turn on unless the motor is cranking. Hook up the laptop and in DSMlink enable the "fuel pump always on" (or something) option.

 

[derekste]

I know the fuel pump is on because the car still cranks and its a 190lph Walbro so I can hear it.

 

[derekste]

It was the CAS. Replaced that and the car started up fine.

There was a DTC code for the CAS, but I cleared it and it never came back. Oh well, problem solved. Thanks all.