Car dies after battery disconnect
#1
Evolving Member
Thread Starter
Car dies after battery disconnect
Not much to say here. I disconnected my battery for a new one. I start it up and then it dies. Mid traffic. This isn't extraordinary. When I replaced my battery a year ago, it will keep stalling until the ECU learns or collects enough data I think.
But it shouldn't do that. Thoughts? This is an MTX btw.
But it shouldn't do that. Thoughts? This is an MTX btw.
#5
Evolving Member
Thread Starter
Well no the issue is that it will die if you let it sit. You will start it up and it's just sitting in neutral. It will drop to 0 RPM as it dies. It shouldn't need to learn how to not kill itself. Since it would be cold, it should be in an open loop state.
Alternator? I highly doubt that's the issue. Before the battery was disconnected, it started up with no issues whatsoever. The lights never dimmed, I've never had any slow starts, and it's never left me stranded in any location due to it not starting.
Alternator? I highly doubt that's the issue. Before the battery was disconnected, it started up with no issues whatsoever. The lights never dimmed, I've never had any slow starts, and it's never left me stranded in any location due to it not starting.
#6
Evolved Member
iTrader: (14)
Well no the issue is that it will die if you let it sit. You will start it up and it's just sitting in neutral. It will drop to 0 RPM as it dies. It shouldn't need to learn how to not kill itself. Since it would be cold, it should be in an open loop state.
If you disconnect the battery, reconnect it, then start it up and let it idle it should idle fine as long as you leave it alone for minimum ten minutes. If it dies during those ten minutes then that is not normal. If you let it idle for 5 mins then try to leave and it dies the first time you come to a stop this is normal as you didnt let it completely relearn. If you let it sit for 10-15 minutes then leave and it dies this is not normal. Open/closed loop does not matter for this issue as the ecu is trying to learn the trims it needs for the Idle Stepper Motor (IAC) to efficently keep the idle stabilized under any condition.
Alternator? I highly doubt that's the issue. Before the battery was disconnected, it started up with no issues whatsoever. The lights never dimmed, I've never had any slow starts, and it's never left me stranded in any location due to it not starting.
If you disconnect the battery, reconnect it, then start it up and let it idle it should idle fine as long as you leave it alone for minimum ten minutes. If it dies during those ten minutes then that is not normal. If you let it idle for 5 mins then try to leave and it dies the first time you come to a stop this is normal as you didnt let it completely relearn. If you let it sit for 10-15 minutes then leave and it dies this is not normal. Open/closed loop does not matter for this issue as the ecu is trying to learn the trims it needs for the Idle Stepper Motor (IAC) to efficently keep the idle stabilized under any condition.
Alternator? I highly doubt that's the issue. Before the battery was disconnected, it started up with no issues whatsoever. The lights never dimmed, I've never had any slow starts, and it's never left me stranded in any location due to it not starting.
#7
Evolving Member
Thread Starter
You are correct in that it was not what I meant. After keeping it gassed at 2,000 RPM's for a few minutes, it finally stopped stalling out. But I know that if I have to get another battery when this one dies, it is going to do the same thing.
I have no idea what would cause it to stall out.
I have no idea what would cause it to stall out.
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#8
Evolved Member
iTrader: (14)
You are correct in that it was not what I meant. After keeping it gassed at 2,000 RPM's for a few minutes, it finally stopped stalling out. But I know that if I have to get another battery when this one dies, it is going to do the same thing.
I have no idea what would cause it to stall out.
I have no idea what would cause it to stall out.
#9
Evolving Member
Thread Starter
That's one of the things that I haven't tried to do. It's been so cold that I haven't really been feeling up to it. Also, I have never really been good at getting the TB thouroughly clean and I'm not sure what else I would have to clean. I did get the EGR cleaned pretty good about 25,000 miles ago.
But I held RPM's at 2000 RPM's for about 3 minutes, gradually let it down and let it rest at about 800 and it was fine after that.
But I held RPM's at 2000 RPM's for about 3 minutes, gradually let it down and let it rest at about 800 and it was fine after that.
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