View Full Version : HELP!!!! My car wont stay running!!


Navy01Z
03-11-2008, 07:32 PM
It just started this like ten min ago. As long as I'm moving or reving it's fine but if I put the clutch in or come to a stop of any kind the volt meter starts to immediately drop ad the damn thing shuts off. Is it the alternator? That was my first guess but Im not sure. Someone please help!!!

Navy01Z
03-11-2008, 08:52 PM
Anyone?

TxDad-97SS
03-12-2008, 07:23 AM
maybe IAC gone bad.

BillyDaKid
03-12-2008, 07:51 AM
Is the check engine light on?

Navy01Z
03-12-2008, 09:18 AM
maybe IAC gone bad.

Sorry for the stupidity but what's the IAC?

Navy01Z
03-12-2008, 09:19 AM
Is the check engine light on?

Yep. It is.

Scoggin Dickey
03-12-2008, 09:34 AM
Yep. It is.

The first step is to find out what code it's stored

BillyDaKid
03-12-2008, 09:34 AM
The IAC is the Idle Air Control valve. It control the flow of air at idle (don't mean to sound like an ass). If this goes bad, you engine will die every time you let off the gas. It's located on the TB. If you run the codes, it will tell you what has gone bad.

BillyDaKid
03-12-2008, 09:36 AM
The first step is to find out what code it's stored

+1...........

Navy01Z
03-12-2008, 07:14 PM
I took it over to Advance Auto today and had them load test it. Turns out the alternator is fine but the battery was bad. Very wierd considering the battery is only like a year old but either way. I bought an Optima red top and porblem solved. Thanks for the help.

98LS-WON
03-12-2008, 09:41 PM
Here is what caused your problem, it's amazing how common this is in all cars. (Forgive me, i'm bored) Your battery was damn near dead so it was drawing a lot of current from the alternator. More current = harder to turn the alternator. Putting a load on an idling engine usually causes it to stall, kind of like letting out the clutch to fast. New battery = problem solved.

Navy01Z
03-12-2008, 10:32 PM
Impressive. I did not know that. Thanks!!

oneBADDz
03-13-2008, 08:50 AM
Here is what caused your problem, it's amazing how common this is in all cars. (Forgive me, i'm bored) Your battery was damn near dead so it was drawing a lot of current from the alternator. More current = harder to turn the alternator. Putting a load on an idling engine usually causes it to stall, kind of like letting out the clutch to fast. New battery = problem solved.

Wow, it's amazing what you can make up. That's pretty outrageous. It's simply a lack of voltage that causes the car to die, and has nothing to do with making the alternator harder to turn. An alternator doesn't work that way

Ponch95
03-13-2008, 09:29 AM
wow lol

98LS-WON
03-20-2008, 09:48 PM
Wow, it's amazing what you can make up. That's pretty outrageous. It's simply a lack of voltage that causes the car to die, and has nothing to do with making the alternator harder to turn. An alternator doesn't work that way

An alteranator doesn't work thatt way? I guess is f-ing magic then.
Define - "lack of voltage" and how it existed if the alternator was working properly. Then explain how the car started in the first place? Why did it run while reving, but not at idle. If it was low voltage, wouldn't the ignition system draw more current at higher RPMs, thereby lowering the voltage even more. I mean, seriously, do you not understand that it takes either more RPMs withthe same current through the rotating windings or more current at the same RPM to increase the alternators output. More current = harder to turn. Ever heard EMF or Counter EMF. I won't tell you what it is, do some research and come back and talk to me afterwards. This lesson was free of charge.

BTW, the lack of voltage you are talking about.... it's caused by the alternator not being able to put out enopugh current at low RPMs. Kind of like when the battery is dead and is taking all of the current it can get, plus some. See EMF above.

Navy01Z
03-20-2008, 09:54 PM
An alteranator doesn't work thatt way? I guess is f-ing magic then.
Define - "lack of voltage" and how it existed if the alternator was working properly. Then explain how the car started in the first place? Why did it run while reving, but not at idle. If it was low voltage, wouldn't the ignition system draw more current at higher RPMs, thereby lowering the voltage even more. I mean, seriously, do you not understand that it takes either more RPMs withthe same current through the rotating windings or more current at the same RPM to increase the alternators output. More current = harder to turn. Ever heard EMF or Counter EMF. I won't tell you what it is, do some research and come back and talk to me afterwards. This lesson was free of charge.

Wow LOL!! It's funny, but I fixed this problem and a new one started with the car overheating without the heat on. I cant win. She must be mad at me or something.

oneBADDz
03-20-2008, 10:12 PM
An alteranator doesn't work thatt way? I guess is f-ing magic then.
Define - "lack of voltage" and how it existed if the alternator was working properly. Then explain how the car started in the first place? Why did it run while reving, but not at idle. If it was low voltage, wouldn't the ignition system draw more current at higher RPMs, thereby lowering the voltage even more. I mean, seriously, do you not understand that it takes either more RPMs withthe same current through the rotating windings or more current at the same RPM to increase the alternators output. More current = harder to turn. Ever heard EMF or Counter EMF. I won't tell you what it is, do some research and come back and talk to me afterwards. This lesson was free of charge.

BTW, the lack of voltage you are talking about.... it's caused by the alternator not being able to put out enopugh current at low RPMs. Kind of like when the battery is dead and is taking all of the current it can get, plus some. See EMF above.

Yu're right about low voltage causing a car to die, I said that. You're wrong that low voltage makes the alternator so hard to turn that the car stalls, that's incompetent. You need to take a lesson in how power is generated by an alternator if you really think that.

SparkyJJO
03-20-2008, 10:43 PM
Yu're right about low voltage causing a car to die, I said that. You're wrong that low voltage makes the alternator so hard to turn that the car stalls, that's incompetent. You need to take a lesson in how power is generated by an alternator if you really think that.

He said more current = harder to turn, not low voltage. In that sense he is right but I don't think that it is possible to draw that much from these alternators to stall out an LS1.

Whatever the reason, glad the first problem got fixed. The car overheats now without the heat on? Heat on wont' make the car overheat - unless you mean interior getting hot, not the engine.

Navy01Z
03-20-2008, 10:48 PM
Whatever the reason, glad the first problem got fixed. The car overheats now without the heat on? Heat on wont' make the car overheat - unless you mean interior getting hot, not the engine.

No. If the heat is on the temp tays right below 210 but if I shut the heater off it begins overheating. Not as much if the car is moving but if Im at a light or something sitting at idle, bam the needle shoots up into the red. I turn the heat back on and it comes back down to normal.

SparkyJJO
03-20-2008, 11:00 PM
Oh ok I misunderstood. When you have the heat on you are turning your heater core into a little radiator basically. I would check your coolant level, make sure you don't have an airlock in your radiator or something else plugging it up.

oneBADDz
03-20-2008, 11:47 PM
He said more current = harder to turn, not low voltage. In that sense he is right but I don't think that it is possible to draw that much from these alternators to stall out an LS1.

Whatever the reason, glad the first problem got fixed. The car overheats now without the heat on? Heat on wont' make the car overheat - unless you mean interior getting hot, not the engine.

I understand. Regardless, the fact is that none of it makes an alternator harder to turn, that's not how an alternator works.

SparkyJJO
03-20-2008, 11:56 PM
Any generator - whether it be an AC alternator or a DC dynamo - has more mechanical resistance to spin when there is a load on it. There is no way around that. This is because the greater current in the stator windings of the alternator causes a stronger opposing magnetic field.

So yes, the greater the load on the alternator, the harder it is turn it. It will take more force, more torque to spin an alternator at the same speed with a heavy electrical load than with a light load.

You can't get more energy out of an alternator without having to put more into it first ;)

98LS-WON
03-21-2008, 08:46 PM
Enough about alternators, that horse has been beaten to death. I had a similar problem and found a plastic bag between my radiator and condenser. Hope you find the source of your misery.

Navy01Z
03-21-2008, 10:07 PM
Really, a plastic bag? Im gonna have to check in the morning.

phillyz28
03-22-2008, 11:34 PM
dont mean to steal the thread but i did have a question regarding your 1st problem. I had the same problem, where my car would turn off. I often have to feather the gas until i get my car moving so that it doesn't shut off. My SES code is p1416 if that helps at all. If anyone can help me out with some more info I would appreciate it, PMs would be great so that i dont hijack this thread.

I have other problems with the car too that I made a post about but nobody seems to want to respond.
http://ls1tech.com/forums/showthread.php?t=886934

Navy01Z
03-22-2008, 11:42 PM
dont mean to steal the thread but i did have a question regarding your 1st problem. I had the same problem, where my car would turn off. I often have to feather the gas until i get my car moving so that it doesn't shut off. My SES code is p1416 if that helps at all. If anyone can help me out with some more info I would appreciate it, PMs would be great so that i dont hijack this thread.

I have other problems with the car too that I made a post about but nobody seems to want to respond.
http://ls1tech.com/forums/showthread.php?t=886934


Your not hijacking. The site is here to help everyone.

phillyz28
03-23-2008, 10:24 PM
thanks man, so anyone have any insight?