It's a 99 eclipse N/A. I recently did an auto to manual transmission conversion.
today, the car started normally, and drove perfect, but then out of nowhere, the car shut off. headlights and everything. So I put it in neutral, re-started it, and kept going, it continued to drive fine. I got gas, and restarted the car like normal, then on my way home, when I let my foot off the gas, and pushed the clutch in to slow down to a stop, the car shut off, not the headlights or anything, but it like stalled. then when I went to restart it, it wouldn't idle, unless I kept my foot on the gas. I got it home, let it sit for a second, restarted it, and it started and idled fine. and Ideas?

I did not change the ecu because I thought that the only difference was the rev limiter, could that be it?

I rely on my car heavily and really need help with this.

Take the big vacuum line off the top of the throttle body. See if the car still dies. If it doesn't, I would suspect you have a bad idle air valve.

Okay, I'll try that and report back tomorrow, Thanks!

Yep, It seems to only die when It gets warm, so I drove around for awhile, and waited for it to stall. Then I took that vaccum line off and it stayed running and idled smooth as butter. :)

Thanks!